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ds97z8x0502 p r e l i m i n a r y 1 1 p reliminary p roduct s pecification z86e30/e31/e40 1 z8 4k otp m icrocontroller features n standard temperature (v cc = 3.5v to 5.5v) n extended temperature (v cc = 4.5v to 5.5v) n available packages: 28-pin dip/soic/plcc otp (z86e30/31 only) 40-pin dip otp (z86e40 only) 44-pin plcc/qfp otp (z86e40 only) n software enabled watch-dog timer (wdt) n push-pull/open-drain programmable on port 0, port 1, and port 2 n 24/32 input/output lines n auto latches n auto power-on reset (por) n programmable otp options: rc oscillator eprom protect auto latch disable permanently enabled wdt crystal oscillator feedback resistor disable ram protect n low-power consumption: 60 mw n fast instruction pointer: 0.75 m s n two standby modes: stop and halt n digital inputs cmos levels, schmitt-triggered n software programmable low emi mode n two programmable 8-bit counter/timers each with a 6-bit programmable prescaler n six vectored, priority interrupts from six different sources n two comparators n on-chip oscillator that accepts a crystal, ceramic resonator, lc, rc, or external clock drive general description the z86e30/e31/e40 8-bit one-time programmable (otp) microcontrollers are members of zilog's single-chip z8 ? mcu family featuring enhanced wake-up circuitry, programmable watch-dog timers, low noise emi op- tions, and easy hardware/software system expansion ca- pability. four basic address spaces support a wide range of mem- ory configurations. the designer has access to three addi- tional control registers that allow easy access to register mapped peripheral and i/o circuits. for applications demanding powerful i/o capabilities, the z86e30/e31 have 24 pins, and the z86e40 has 32 pins of dedicated input and output. these lines are grouped into four ports, eight lines per port, and are configurable under software control to provide timing, status signals, and par- allel i/o with or without handshake, and address/data bus for interfacing external memory. notes: all signals with a preceding front slash, ?? are active low. for example, b/w (word is active low); b /w (byte is active low, only). device rom (kb) ram* (bytes) i/o lines speed (mhz) z86e30 4 237 24 16 Z86E31 2 125 24 16 z86e40 4 236 32 16 note: *general-purpose
z86e30/e31/e40 z8 4k otp microcontroller zilog 2 p r e l i m i n a r y ds97z8x0502 power connections follow conventional descriptions be- low: connection circuit device power v cc v dd ground gnd v ss figure 1. z86e30/e31/e40 functional block diagram port 3 counter/ timers (2) interrupt control two analog comparators port 2 i/o (bit programmable) alu flags machine timing & instruction control program counter v gnd xtal 44 port 0 output input address or i/o (nibble programmable) 8 address/data or i/o (byte programmable) as ds r/w reset reset wdt, por port 1 otp register file register pointer (e40 only) (e40 only) cc
z86e30/e31/e40 zilog z8 4k otp microcontroller ds97z8x0502 p r e l i m i n a r y 3 1 figure 2. eprom programming block diagram address mux eprom test rom otp options ad 11- 0 z8 mcu z8 port 0 msn port 3 pgm + test mode logic epm p32 ce xt1 pgm p30 d7 - 0 ad 11- 0 ad 11- 0 data mux z8 port 2 d7 - 0 oe p31 v p33 d7 - 0 pp
z86e30/e31/e40 z8 4k otp microcontroller zilog 4 p r e l i m i n a r y ds97z8x0502 pin identification figure 3. 40-pin dip pin con?uration standard mode r/w p25 p26 p27 p04 p05 p06 p14 p15 p07 v cc p16 p17 xtal2 xtal1 p31 p32 p33 p34 as ds p24 p23 p22 p21 p20 p03 p13 p12 gnd p02 p11 p10 p01 p00 p30 p36 p37 p35 reset 40 40-pin dip 1 20 21 table 1. 40-pin dip pin identi?ation standard mode pin # symbol function direction 1 r/w read/write output 2? p25?27 port 2, pins 5,6,7 in/output 5? p04?06 port 0, pins 4,5,6 in/output 8? p14?15 port 1, pins 4,5 in/output 10 p07 port 0, pin 7 in/output 11 v cc power supply 12?3 p16?17 port 1, pins 6,7 in/output 14 xtal2 crystal oscillator output 15 xtal1 crystal oscillator input 16?8 p31?33 port 3, pins 1,2,3 input 19 p34 port 3, pin 4 output 20 as address strobe output 21 reset reset input 22 p35 port 3, pin 5 output 23 p37 port 3, pin 7 output 24 p36 port 3, pin 6 output 25 p30 port 3, pin 0 input 26?7 p00?01 port 0, pins 0,1 in/output 28?9 p10?11 port 1, pins 0,1 in/output 30 p02 port 0, pin 2 in/output 31 gnd ground 32?3 p12?13 port 1, pins 2,3 in/output 34 p03 port 0, pin 3 in/output 35?9 p20?24 port 2, pins 0,1,2,3,4 in/output 40 ds data strobe output
z86e30/e31/e40 zilog z8 4k otp microcontroller ds97z8x0502 p r e l i m i n a r y 5 1 figure 4. 44-pin plcc pin con?uration standard mode 44-pin plcc 7 17 p21 p22 p23 p24 ds nc r/w p25 p26 p27 p04 p30 p36 p37 p35 reset r/rl as p34 p33 p32 p31 p05 p06 p14 p15 p07 v cc v cc p16 p17 xtal2 xtal1 p20 p03 p13 p12 gnd gnd p02 p11 p10 p01 p00 1 28 18 40 39 29 6 table 2. 44-pin plcc pin identi?ation pin # symbol function direction 1? gnd ground 3? p12?13 port 1, pins 2,3 in/output 5 p03 port 0, pin 3 in/output 6?0 p20?24 port 2, pins 0,1,2,3,4 in/output 11 ds data strobe output 12 nc no connection 13 r/w read/write output 14?6 p25?27 port 2, pins 5,6,7 in/output 17?9 p04?06 port 0, pins 4,5,6 in/output 20?1 p14?15 port 1, pins 4,5 in/output 22 p07 port 0, pin 7 in/output 23?4 v cc power supply 25?6 p16?17 port 1, pins 6,7 in/output 27 xtal2 crystal oscillator output 28 xtal1 crystal oscillator input 29?1 p31?33 port 3, pins 1,2,3 input 32 p34 port 3, pin 4 output 33 as address strobe output 34 r/rl rom/romless select input 35 reset reset input 36 p35 port 3, pin 5 output 37 p37 port 3, pin 7 output 38 p36 port 3, pin 6 output 39 p30 port 3, pin 0 input 40?1 p00?01 port 0, pins 0,1 in/output 42?3 p10?11 port 1, pins 0,1 in/output 44 p02 port 0, pin 2 in/output table 2. 44-pin plcc pin identi?ation pin # symbol function direction
z86e30/e31/e40 z8 4k otp microcontroller zilog 6 p r e l i m i n a r y ds97z8x0502 pin identification (continued) figure 5. 44-pin qfp pin con?uration standard mode 34 44 p21 p22 p23 p24 ds nc r/w p25 p26 p27 p04 p30 p36 p37 p35 reset r/rl as p34 p33 p32 p31 p05 p06 p14 p15 p07 v cc v cc p16 p17 xtal2 xtal1 p20 p03 p13 p12 gnd gnd p02 p11 p10 p01 p00 1 23 33 44-pin qfp 11 22 12 table 3. 44-pin qfp pin identi?ation pin # symbol function direction 1? p05?06 port 0, pins 5,6 in/output 3? p14?15 port 1, pins 4,5 in/output 5 p07 port 0, pin 7 in/output 6? v cc power supply 8? p16?17 port 1, pins 6,7 in/output 10 xtal2 crystal oscillator output 11 xtal1 crystal oscillator input 12?4 p31?33 port 3, pins 1,2,3 input 15 p34 port 3, pin 4 output 16 as address strobe output 17 r/rl rom/romless select input 18 reset reset input 19 p35 port 3, pin 5 output 20 p37 port 3, pin 7 output 21 p36 port 3, pin 6 output 22 p30 port 3, pin 0 input 23?4 p00?01 port 0, pin 0,1 in/output 25?6 p10?11 port 1, pins 0,1 in/output 27 p02 port 0, pin 2 in/output 28?9 gnd ground 30?1 p12?13 port 1, pins 2,3 in/output 32 p03 port 0, pin 3 in/output 33?7 p20? port 2, pins 0,1,2,3,4 in/output 38 ds data strobe output 39 nc no connection 40 r/w read/write output 41?3 p25?27 port 2, pins 5,6,7 in/output 44 p04 port 0, pin 4 in/output table 3. 44-pin qfp pin identi?ation pin # symbol function direction
z86e30/e31/e40 zilog z8 4k otp microcontroller ds97z8x0502 p r e l i m i n a r y 7 1 figure 6. 40-pin dip pin con?uration eprom mode nc d5 d6 d7 a4 a5 a6 nc nc a7 v cc nc nc nc ce oe epm v pp a8 nc nc d4 d3 d2 d1 d0 a3 nc nc gnd a2 nc nc a1 a0 pgm a10 a11 a9 nc 40 40-pin dip 1 20 21 table 4. 40-pin dip package pin identi?ation eprom mode pin # symbol function direction 1 nc no connection 2? d5?7 data 5,6,7 in/output 5? a4?6 address 4,5,6 input 8? nc no connection 10 a7 address 7 input 11 v cc power supply 12?4 nc no connection 15 ce chip select input 16 oe output enable input 17 epm eprom prog. mode input 18 v pp prog. voltage input 19 a8 address 8 input 20?1 nc no connection 22 a9 address 9 input 23 a11 address 11 input 24 a10 address 10 input 25 pgm prog. mode input 26?7 a0?1 address 0,1 input 28?9 nc no connection 30 a2 address 2 input 31 gnd ground 32?3 nc no connection 34 a3 address 3 input 35?9 d0?4 data 0,1,2,3,4 in/output 40 nc no connection
z86e30/e31/e40 z8 4k otp microcontroller zilog 8 p r e l i m i n a r y ds97z8x0502 pin identification (continued) figure 7. 44-pin plcc pin con?uration eprom programming mode 44-pin plcc 7 17 d1 d2 d3 d4 nc nc nc d5 d6 d7 a4 pgm a10 a11 a9 nc nc nc a8 v pp epm oe a5 a6 nc nc a7 v cc v cc nc nc nc ce d0 a3 nc nc gnd gnd a2 nc nc a1 a0 1 28 18 40 39 29 6 table 5. 44-pin plcc pin con?uration eprom programming mode pin # symbol function direction 1? gnd ground 3? nc no connection 5 a3 address 3 input 6?0 d0?4 data 0,1,2,3,4 in/output 11?3 nc no connection 14?6 d5?7 data 5,6,7 in/output 17?9 a4?6 address 4,5,6 input 20?1 nc no connection 22 a7 address 7 input 23?4 v cc power supply 25?7 nc no connection 28 ce chip select input 29 oe output enable input 30 epm eprom prog. mode input 31 v pp prog. voltage input 32 a8 address 8 input 33?5 nc no connection 36 a9 address 9 input 37 a11 address 11 input 38 a10 address 10 input 39 pgm prog. mode input 40?1 a0,a1 address 0,1 input 42?3 nc no connection 44 a2 address 2 input table 5. 44-pin plcc pin con?uration eprom programming mode pin # symbol function direction
z86e30/e31/e40 zilog z8 4k otp microcontroller ds97z8x0502 p r e l i m i n a r y 9 1 figure 8. 44-pin qfp pin con?uration eprom programming mode 34 44 d1 d2 d3 d4 nc nc nc d5 d6 d7 a4 pgm a10 a11 a9 nc nc nc a8 v pp epm oe a5 a6 nc nc nc a7 v cc v cc nc nc ce d0 a3 nc nc gnd gnd a2 nc nc a1 a0 1 23 33 44 -pin qfp 11 22 12 table 6. 44-pin qfp pin identi?ation eprom programming mode pin # symbol function direction 1? a5?6 address 5,6 input 3? nc no connection 5 a7 address 7 input 6? v cc power supply 8?0 nc no connection 11 ce chip select input 12 oe output enable input 13 epm eprom prog. mode input 14 v pp prog. voltage input 15 a8 address 8 input 16?8 nc no connection 19 a9 address 9 input 20 a11 address 11 input 21 a10 address 10 input 22 pgm prog. mode input 23?4 a0,a1 address 0,1 input 25?6 nc no connection 27 a2 address 2 input 28?9 gnd ground 30?1 nc no connection 32 a3 address 3 input 33?7 d0?4 data 0,1,2,3,4 in/output 38?0 nc no connection 41?3 d5?7 data 5,6,7 in/output 44 a4 address 4 input table 6. 44-pin qfp pin identi?ation eprom programming mode pin # symbol function direction
z86e30/e31/e40 z8 4k otp microcontroller zilog 10 p r e l i m i n a r y ds97z8x0502 pin identification (continued) figure 9. standard mode 28-pin dip/soic pin con?uration table 7. 28-pin dip/soic/plcc pin identi?ation* pin # symbol function direction 1? p25?27 port 2, pins 5,6, in/output 4? p04?07 port 0, pins 4,5,6,7 in/output 8v cc power supply 9 xtal2 crystal oscillator output 10 xtal1 crystal oscillator input 11?3 p31?33 port 3, pins 1,2,3 input 14?5 p34?35 port 3, pins 4,5 output 16 p37 port 3, pin 7 output 17 p36 port 3, pin 6 output 18 p30 port 3, pin 0 input 19?1 p00?02 port 0, pins 0,1,2 in/output 22 v ss ground 23 p03 port 0, pin 3 in/output 24?8 p20?24 port 2, pins 0,1,2,3,4 in/output p25 p26 p27 p04 p05 p06 p07 v cc xtal2 xtal1 p31 p32 p33 p34 p24 p23 p22 p21 p20 p03 v ss p02 p01 p00 p30 p36 p37 p35 28 28-pin dip 1 14 15 figure 10. eprom programming mode 28-pin dip/soic pin con?uration figure 11. standard mode 28-pin plcc pin con?uration d5 d6 d7 a4 a5 a6 a7 v cc nc ce oe epm v pp a8 d4 d3 d2 d1 d0 a3 v ss a2 a1 a0 pgm a10 a11 a9 28 28-pin dip 1 14 15 25 19 5 11 18 12 26 4 28-pin plcc 1 xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx p21 p20 p03 v ss p02 p01 p00 p05 p06 p07 v cc xt2 xt1 p31 p04 p27 p26 p25 p24 p23 p22 p32 p33 p34 p35 p37 p36 p30
z86e30/e31/e40 zilog z8 4k otp microcontroller ds97z8x0502 p r e l i m i n a r y 11 1 figure 12. eprom programming mode 28-pin plcc pin con?uration 25 19 5 11 18 12 26 4 28-pin plcc 1 xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx d1 d0 a3 v ss a2 a1 a0 a5 a6 a7 vcc nc ce oe a4 d7 d6 d5 d4 d3 d2 epm v pp a8 a9 a11 a10 pgm table 8. 28-pin eprom pin identi?ation pin # symbol function direction 1? d5?7 data 5,6,7 in/output 4? a4?7 address 4,5,6,7 input 8v cc power supply 9 nc no connection 10 ce chip select input 11 oe output enable input 12 epm eprom prog. mode input 13 v pp prog. voltage input 14?5 a8?9 address 8,9 input 16 a11 address 11 input 17 a10 address 10 input 18 pgm prog. mode input 19?1 a0?2 address 0,1,2 input 22 v ss ground 23 a3 address 3 input 24?8 d0?4 data 0,1,2,3,4 in/output
z86e30/e31/e40 z8 4k otp microcontroller zilog 12 p r e l i m i n a r y ds97z8x0502 absolute maximum ratings stresses greater than those listed under absolute maxi- mum ratings may cause permanent damage to the de- vice. this is a stress rating only; functional operation of the device at any condition above those indicated in the oper- ational sections of these specifications is not implied. ex- posure to absolute maximum rating conditions for an ex- tended period may affect device reliability. total power dissipation should not exceed 1.2 w for the package. power dissipation is calculated as follows: total power dissipation = v dd x [ i dd ?(sum of i oh ) ] + sum of [ (v dd ?v oh ) x i oh ] + sum of (v 0l x i 0l ) standard test conditions the characteristics listed below apply for standard test conditions as noted. all voltages are referenced to ground. positive current flows into the referenced pin (test load). parameter min max units ambient temperature under bias ?0 +105 c storage temperature ?5 +150 c voltage on any pin with respect to v ss [note 1] ?.6 +7 v voltage on v dd pin with respect to v ss ?.3 +7 v voltage on xtal1 and reset pins with respect to v ss [note 2] ?.6 v dd +1 v total power dissipation 1.21 w maximum allowable current out of v ss 220 ma maximum allowable current into v dd 180 ma maximum allowable current into an input pin [note 3] ?00 +600 m a maximum allowable current into an open-drain pin [note 4] ?00 +600 m a maximum allowable output current sinked by any i/o pin 25 ma maximum allowable output current sourced by any i/o pin 25 ma maximum allowable output current sinked by reset pin 3 ma notes: 1. this applies to all pins except xtal pins and where otherwise noted. 2. there is no input protection diode from pin to v dd . 3. this excludes xtal pins. 4. device pin is not at an output low state. figure 13. test load diagram 150 pf from output under test
z86e30/e31/e40 zilog z8 4k otp microcontroller ds97z8x0502 p r e l i m i n a r y 13 1 capacitance t a = 25 c, v cc = gnd = 0v, f = 1.0 mhz; unmeasured pins returned to gnd. dc electrical characteristics parameter min max input capacitance 0 12 pf output capacitance 0 12 pf i/o capacitance 0 12 pf t a = 0 c to +70 c sym parameter v cc note [3] min max typical @ 25 c units conditions notes v ch clock input high voltage 3.5v 5.5v 0.7 v cc 0.7 v cc v cc +0.3 v cc +0.3 1.8 2.5 v v driven by external clock generator v cl clock input low voltage 3.5v 4.5v gnd -0.3 gnd -0.3 0.2 v cc 0.2 v cc 0.9 1.5 v v driven by external clock generator v ih input high voltage 3.5v 5.5v 0.7 v cc 0.7 v cc v cc +0.3 v cc +0.3 2.5 2.5 v v v il input low voltage 3.5v 5.5v gnd -0.3 gnd -0.3 0.2 v cc 0.2 v cc 1.5 1.5 v v v oh output high voltage low emi mode 3.5v 5.5v v cc -0.4 v cc -0.4 3.3 4.8 v v i oh = ?0.5 ma v oh1 output high voltage 3.5v 5.5v v cc -0.4 v cc -0.4 3.3 4.8 v v i oh = -2.0 ma i oh = -2.0 ma v ol output low voltage low emi mode 3.5v 4.5v 0.4 0.4 0.2 0.2 v v i ol = 1.0 ma i ol = 1.0 ma v ol1 output low voltage 3.5v 4.5v 0.4 0.4 0.1 0.1 v v i ol = + 4.0 ma i ol = + 4.0 ma 8 8 v ol2 output low voltage 3.5v 4.5v 1.2 1.2 0.5 0.5 v v i ol = + 12 ma i ol = + 12 ma 8 8 v rh reset input high voltage 3.5v 5.5v .8 v cc .8 v cc v cc v cc 1.7 2.1 v v v rl reset input low voltage 3.5v 5.5v gnd -0.3 gnd -0.3 0.2 v cc 0.2 v cc 1.3 1.7 v v 13 v olr reset output low voltage 3.5v 5.5v 0.6 0.6 0.3 0.2 v v i ol = 1.0 ma i ol = 1.0 ma v offset comparator input offset voltage 3.5v 4.5v 25 25 10 10 mv mv v icr input common mode voltage range 3.5v 5.5v 0 0 v cc -1.0v v cc -1.0v v v 10 10 i il input leakage 3.5v 4.5v -1 -1 2 2 0.032 0.032 m a m a v in = 0v, v cc v in = 0v, v cc i ol output leakage 3.5v 4.5v -1 -1 2 2 0.032 0.032 m a m a v in = 0v, v cc v in = 0v, v cc i ir reset input current 3.5v 4.5v -20 -20 -130 -180 -65 -112 m a m a
z86e30/e31/e40 z8 4k otp microcontroller zilog 14 p r e l i m i n a r y ds97z8x0502 dc electrical characteristics (continued) i cc supply current 3.5v 5.5v 20 25 7 20 ma ma @ 16 mhz @ 16 mhz 4,5 4,5 i cc1 standby current halt mode 3.5v 5.5v 8 8 3.7 3.7 ma ma v in = 0v, v cc @ 16 mhz 4,5 4,5 3.5v 5.5v 7.0 7.0 2.9 2.9 ma ma clock divide by 16 @ 16 mhz 4,5 4,5 i cc2 standby current stop mode 3.5v 5.5v 3.5v 5.5v 10 10 800 800 2 3 600 600 m a m a m a m a v in = 0v, v cc v in = 0v, v cc v in = 0v, v cc v in = 0v, v cc 6,11 6,11 6,11,1 4 6,11,1 4 i all auto latch low current 3.5v 5.5v 0.7 1.4 8 15 2.4 4.7 m a m a 0v z86e30/e31/e40 zilog z8 4k otp microcontroller ds97z8x0502 p r e l i m i n a r y 15 1 t a =?0 c to +105 c sym parameter v cc note [3] min max typical @ 25 c units conditions notes v ch clock input high voltage 4.5v 5.5v 0.7 v cc 0.7 v cc v cc +0.3 v cc +0.3 2.5 2.5 v v driven by external clock generator v cl clock input low voltage 4.5v 5.5v gnd-0.3 gnd-0.3 0.2 v cc 0.2 v cc 1.5 1.5 v v driven by external clock generator v ih input high voltage 4.5v 5.5v 0.7 v cc 0.7 v cc v cc +0.3 v cc +0.3 2.5 2.5 v v v il input low voltage 4.5v 5.5v gnd-0.3 gnd-0.3 0.2 v cc 0.2 v cc 1.5 1.5 v v v oh output high voltage low emi mode 4.5v 5.5v v cc -0.4 v cc -0.4 4.8 4.8 v v i oh = ?0.5 ma i oh = ?0.5 ma 8 8 v oh1 output high voltage 4.5v 4.5v v cc -0.4 v cc -0.4 4.8 4.8 v v i oh = -2.0 ma i oh = -2.0 ma 8 8 v ol output low voltage low emi mode 4.5v 5.5v 0.4 0.4 0.2 0.2 v v i ol = 1.0 ma i ol = 1.0 ma v ol1 output low voltage 4.5v 5.5v 0.4 0.4 0.1 0.1 v v i ol = + 4.0 ma i ol = +4.0 ma 8 8 v ol2 output low voltage 4.5v 5.5v 1.2 1.2 0.5 0.5 v v i ol = + 12 ma i ol = + 12 ma 8 8 v rh reset input high voltage 3.5v 5.5v .8 v cc .8 v cc v cc v cc 1.7 2.1 v v 13 13 v olr reset output low voltage 3.5v 5.5v 0.6 0.6 0.3 0.2 v v i ol = 1.0 ma i ol = 1.0 ma 13 13 v offset comparator input offset voltage 4.5v 5.5v 25 25 10 10 mv mv v icr input common mode voltage range 4.5v 5.5v 0 0 v cc -1.5v v cc -1.5v v v 10 10 i il input leakage 4.5v 5.5v -1 -1 2 2 <1 <1 m a m a v in = 0v, v cc v in = 0v, v cc i ol output leakage 4.5v 5.5v -1 -1 2 2 <1 <1 m a m a v in = 0v, v cc v in = 0v, v cc i ir reset input current 4.5v 5.5v -18 -18 -180 -180 -112 -112 m a m a i cc supply current 4.5v 5.5v 25 25 20 20 ma ma @ 16 mhz @ 16 mhz 4,5 4,5 i cc1 standby current halt mode 4.5v 5.5v 8 8 3.7 3.7 ma ma v in = 0v, v cc @ 16 mhz v in = 0v, v cc @ 16 mhz 4,5 4,5 i cc2 standby current (stop mode) 4.5v 5.5v 10 10 2 3 m a m a v in = 0v, v cc v in = 0v, v cc 6,11,14 6,11,14 i all auto latch low current 4.5v 5.5v 1.4 1.4 20 20 4.7 4.7 m a m a 0v < v in < v cc 0v < v in < v cc 9 9
z86e30/e31/e40 z8 4k otp microcontroller zilog 16 p r e l i m i n a r y ds97z8x0502 dc electrical characteristics (continued) i alh auto latch high current 4.5v 5.5v -1.0 -1.0 -10 -10 -3.8 -3.8 m a m a 0v < v in < v cc 0v < v in < v cc 9 9 t por power on reset 4.5v 5.5v 2.0 2.0 14 14 4 4 ms ms v lv auto reset voltage 2.0 3.3 2.9 v 1 1. device does function down to the auto reset voltage. 2. gnd=0v 3. the v cc voltage specification of 5.5v guarantees 5.0v 0.5v. 4. all outputs unloaded, i/o pins floating, inputs at rail. 5. cl1= cl2 = 22 pf 6. same as note [4] except inputs at v cc . 7. maximum temperature is 70 c 8. std mode (not low emi mode) 9. auto latch (mask option) selected 10. for analog comparator inputs when analog comparators are enabled. 11. clock must be forced low, when xtal1 is clock driven and xtal2 is floating. 12. typicals are at v cc = 5.0v 13. z86e40 only 14. wdt is not running. t a =?0 c to +105 c sym parameter v cc note [3] min max typical @ 25 c units conditions notes
z86e30/e31/e40 zilog z8 4k otp microcontroller ds97z8x0502 p r e l i m i n a r y 17 1 figure 14. external i/o or memory read/write timing z86e40 only r/w , dm 9 12 18 3 16 13 4 5 8 11 6 17 10 15 7 14 2 1 port 0 port 1 as ds (read) port1 ds (w rite) a7 - a0 d7 - d0 in d7 - d0 out a7 - a0 19 20
z86e30/e31/e40 z8 4k otp microcontroller zilog 18 p r e l i m i n a r y ds97z8x0502 dc electrical characteristics (continued) t a = 0 c to 70 c 16 mhz no symbol parameter note [3] v cc min max units notes 1 tda(as) address valid to as rise delay 3.5v 5.5v 25 25 ns ns 2 2 tdas(a) as rise to address float delay 3.5v 5.5v 35 35 ns ns 2 3 tdas(dr) as rise to read data reqd valid 3.5v 5.5v 180 180 ns ns 1,2 4 twas as low width 3.5v 5.5v 40 40 ns ns 2 5 tdas(ds) address float to ds fall 3.5v 5.5v 0 0 ns ns 6 twdsr ds (read) low width 3.5v 5.5v 135 135 ns ns 1,2 7 twdsw ds (write) low width 3.5v 5.5v 80 80 ns ns 1,2 8 tddsr(dr) ds fall to read data reqd valid 3.5v 5.5v 75 75 ns ns 1,2 9 thdr(ds) read data to ds rise hold time 3.5v 5.5v 0 0 ns ns 2 10 tdds(a) ds rise to address active delay 3.5v 5.5v 50 50 ns ns 2 11 tdds(as) ds rise to as fall delay 3.5v 5.5v 35 35 ns ns 2 12 tdr/w(as) r/w valid to as rise delay 3.5v 5.5v 25 25 ns ns 2 13 tdds(r/w) ds rise to r/w not valid 3.5v 5.5v 35 35 ns ns 2 14 tddw(dsw) write data valid to ds fall (write) delay 3.5v 5.5v 55 55 25 25 ns ns 2 15 tdds(dw) ds rise to write data not valid delay 3.5v 5.5v 35 35 ns ns 2 16 tda(dr) address valid to read data reqd valid 3.5v 5.5v 230 230 ns ns 1,2 17 tdas(ds) as rise to ds fall delay 3.5v 5.5v 45 45 ns ns 2 18 tddm(as) dm valid to as fall delay 3.5v 5.5v 30 30 ns ns 2 20 thds(as) ds valid to address valid hold time 3.5v 5.5v 35 35 ns ns notes: 1. when using extended memory timing, add 2 tpc. 2. timing numbers given are for minimum tpc. 3. the v cc voltage specification of 5.5v guarantees 5.0v 0.5v and the v cc voltage specification of 3.5v guarantees only 3.5v standard test load all timing references use 0.7 v cc for a logic 1 and 0.2 v cc for a logic 0. for standard mode (not low-emi mode for outputs) with smr d1 = 0, d0 = 0.
z86e30/e31/e40 zilog z8 4k otp microcontroller ds97z8x0502 p r e l i m i n a r y 19 1 t a = -40 c to 105 c 16 mhz no symbol parameter note [3] v cc min max units notes 1 tda(as) address valid to as rise delay 4.5v 5.5v 25 25 ns ns 2 2 tdas(a) asas rise to address float delay 4.5v 5.5v 35 35 ns ns 2 3 tdas(dr) as rise to read data reqd valid 4.5v 5.5v 180 180 ns ns 1,2 4 twas as low width 4.5v 5.5v 40 40 ns ns 2 5 tdas(ds) address float to ds fall 4.5v 5.5v 0 0 ns ns 6 twdsr ds (read) low width 4.5v 5.5v 135 135 ns ns 1,2 7 twdsw ds (write) low width 4.5v 5.5v 80 80 ns ns 1,2 8 tddsr(dr) ds fall to read data reqd valid 4.5v 5.5v 75 75 ns ns 1,2 9 thdr(ds) read data to ds rise hold time 4.5v 5.5v 0 0 ns ns 2 10 tdds(a) ds rise to address active delay 4.5v 5.5v 50 50 ns ns 2 11 tdds(as) ds rise to as fall delay 4.5v 5.5v 35 35 ns ns 2 12 tdr/w(as) r/w valid to as rise delay 4.5v 5.5v 25 25 ns ns 2 13 tdds(r/w) ds rise to r/w not valid 4.5v 5.5v 35 35 ns ns 2 14 tddw(dsw) write data valid to ds fall (write) delay 4.5v 5.5v 55 55 25 25 ns ns 2 15 tdds(dw) ds rise to write data not valid delay 4.5v 5.5v 35 35 ns ns 2 16 tda(dr) address valid to read data reqd valid 4.5v 5.5v 230 230 ns ns 1,2 17 tdas(ds) as rise to ds fall delay 4.5v 5.5v 45 45 ns ns 2 18 tddm(as) /dm valid to as fall delay 4.5v 5.5v 30 30 ns ns 2 20 thds(as) ds valid to address valid hold time 4.5v 5.5v 35 35 ns ns notes: 1. when using extended memory timing, add 2 tpc. 2. timing numbers given are for minimum tpc. 3. the v cc voltage specification of 5.5v guarantees 5.0v 0.5v and the v cc voltage specification of 3.5v guarantees only 3.5v standard test load all timing references use 0.7 v cc for a logic 1 and 0.2 v cc for a logic 0. for standard mode (not low-emi mode for outputs) with smr, d1 = 0, d0 = 0.
z86e30/e31/e40 z8 4k otp microcontroller zilog 20 p r e l i m i n a r y ds97z8x0502 dc electrical characteristics (continued) figure 15. additional timing diagram clock 1 3 4 8 2 2 3 tin irqn 6 5 7 7 11 clock setup 10 9 stop mode recovery source
z86e30/e31/e40 zilog z8 4k otp microcontroller ds97z8x0502 p r e l i m i n a r y 21 1 additional timing table (divide-by-one mode) t a = 0 c to +70 c t a = -40 c to +105 c 4 mhz 4 mhz no symbol parameter v cc note [6] min max min max units notes 1 tpc input clock period 3.5v 5.5v 250 250 dc dc 250 250 dc dc ns ns 1,7,8 1,7,8 2 trc,tfc clock input rise & fall times 3.5v 5.5v 25 25 25 25 ns ns 1,7,8 1,7,8 3 twc input clock width 3.5v 5.5v 100 100 100 100 ns ns 1,7,8 1,7,8 4 twtinl timer input low width 3.5v 5.5v 100 70 100 70 ns ns 1,7,8 1,7,8 5 twtinh timer input high width 3.5v 5.5v 5tpc 5tpc 5tpc 5tpc 1,7,8 1,7,8 6 tptin timer input period 3.5v 5.5v 8tpc 8tpc 8tpc 8tpc 1,7,8 1,7,8 7 trtin, tftin timer input rise & fall timer 3.5v 5.5v 100 100 100 100 ns ns 1,7,8 1,7,8 8a twil int. request low time 3.5v 5.5v 100 70 100 70 ns ns 1,2,7,8 1,2,7,8 8b twil int. request low time 3.5v 5.5v 5tpc 5tpc 5tpc 5tpc 1,3,7,8 1,3,7,8 9 twih int. request input high time 3.5v 5.5v 5tpc 5tpc 5tpc 5tpc 1,2,7,8 1,2,7,8 10 twsm stop mode recovery width spec 3.5v 5.5v 12 12 12 12 ns ns 4,8 4,8 11 tost oscillator startup time 3.5v 5.5v 5tpc 5tpc 5tpc 4,8,9 notes: 1. timing reference uses 0.7 v cc for a logic 1 and 0.2 v cc for a logic 0. 2. interrupt request via port 3 (p31?33). 3. interrupt request via port 3 (p30). 4. smr-d5 = 1, por stop mode delay is on. 5. reg. wdtmr. 6. the v cc voltage specification of 5.5v guarantees 5.0v 0.5v and the v cc voltage specification of 3.5v guarantees 3.5v only. 7. smr d1 = 0. 8. maximum frequency for internal system clock is 4 mhz when using xtal divide-by-one mode. 9. for rc and lc oscillator, and for oscillator driven by clock driver.
z86e30/e31/e40 z8 4k otp microcontroller zilog 22 p r e l i m i n a r y ds97z8x0502 dc electrical characteristics (continued) handshake timing diagrams figure 16. input handshake timing data in 1 2 3 4 5 6 da v (input) rdy (output) next data in valid delayed rdy delayed dav data in valid figure 17. output handshake timing data out dav (output) rdy (input) next data out valid delayed rdy delayed dav data out valid 7 8 9 10 11
z86e30/e31/e40 zilog z8 4k otp microcontroller ds97z8x0502 p r e l i m i n a r y 23 1 additional timing table t a = -40 c to +105 c 16 mhz no symbol parameter v cc note [6] min max units conditions notes 1 tpc input clock period 3.5v 5.5v 62.5 62.5 dc dc ns ns 1,7,8 1,7,8 2 trc,tfc clock input rise & fall times 3.5v 5.5v 15 15 ns ns 1,7,8 1,7,8 3 twc input clock width 3.5v 5.5v 31 31 ns ns 1,7,8 1,7,8 4 twtinl timer input low width 3.5v 5.5v 70 70 ns ns 1,7,8 1,7,8 5 twtinh timer input high width 3.5v 5.5v 5tpc 5tpc 1,7,8 1,7,8 6 tptin timer input period 3.5v 5.5v 8tpc 8tpc 1,7,8 1,7,8 7 trtin, tftin timer input rise & fall timer 3.5v 5.5v 100 100 ns ns 1,7,8 1,7,8 8a twil int. request low time 3.5v 5.5v 70 70 ns ns 1,2,7,8 1,2,7,8 8b twil int. request low time 3.5v 5.5v 5tpc 5tpc 1,3,7,8 1,3,7,8 9 twih int. request input high time 3.5v 5.5v 5tpc 1,2,7,8 10 twsm stop mode recovery width spec 3.5v 5.5v 12 12 ns ns 4,8 4,8 11 tost oscillator startup time 3.5v 5.5v 5tpc 5tpc 4,8 4,8 12 twdt watch-dog timer delay time before timeout 3.5v 5.5v 10 5 ms ms d0 = 0 d1 = 0 5,11 5,11 3.5v 5.5v 20 10 ms ms d0 = 1 d1 = 0 5,11 5,11 3.5v 5.5v 40 20 ms ms d0 = 0 d1 = 1 5,11 5,11 3.5v 5.5v 160 80 ms ms d0 = 1 d1 = 1 5,11 5,11 notes: 1. timing reference uses 0.7 v cc for a logic 1 and 0.2 v cc for a logic 0. 2. interrupt request via port 3 (p31?33) 3. interrupt request via port 3 (p30) 4. smr-d5 = 1, por stop mode delay is on 5. reg. wdtmr 6. the v cc voltage spec. of 5.5v guarantees 5.0v 0.5v. 7. smr d1 = 0 8. maximum frequency for internal system clock is 4 mhz when using xtal divide-by-one mode. 9. for rc and lc oscillator, and for oscillator driven by clock driver. 10. standard mode (not low emi output ports) 11. using internal rc
z86e30/e31/e40 z8 4k otp microcontroller zilog 24 p r e l i m i n a r y ds97z8x0502 pin functions eprom programming mode d7?0 data bus. the data can be read from or written to external memory through the data bus. a11?0 address bus. during programming, the eprom address is written to the address bus. v cc power supply. this pin must supply 5v during the eprom read mode and 6v during other modes. ce chip enable (active low). this pin is active during eprom read mode, program mode, and program verify mode. oe output enable (active low). this pin drives the direc- tion of the data bus. when this pin is low, the data bus is output, when high, the data bus is input. epm eprom program mode. this pin controls the differ- ent eprom program mode by applying different voltages. v pp program voltage. this pin supplies the program volt- age. pgm program mode (active low). when this pin is low, the data is programmed to the eprom through the data bus. application precaution the production test-mode environment may be enabled accidentally during normal operation if excessive noise surges above v cc occur on pins xtal1 and reset . in addition, processor operation of z8 otp devices may be affected by excessive noise surges on the v pp , ce , epm , oe pins while the microcontroller is in standard mode. recommendations for dampening voltage surges in both test and otp mode include the following: n using a clamping diode to v cc n adding a capacitor to the affected pin standard mode xtal crystal 1 (time-based input). this pin connects a parallel-resonant crystal, ceramic resonator, lc, rc net- work, or external single-phase clock to the on-chip oscilla- tor input. xtal2 crystal 2 (time-based output). this pin connects a parallel-resonant crystal, ceramic resonator, lc, or rc network to the on-chip oscillator output. r/w read/write (output, write low). the r/w signal is low when the ccp is writing to the external program or data memory (z86e40 only). reset reset (input, active low). reset will initialize the mcu. reset is accomplished either through power-on, watch-dog timer reset, stop-mode recovery, or exter- nal reset. during power-on reset and watch-dog timer reset, the internally generated reset drives the reset pin low for the por time. any devices driving the reset line must be open-drain in order to avoid damage from a pos- sible conflict during reset conditions. pull-up is provided in- ternally. after the por time, reset is a schmitt-triggered input. to avoid asynchronous and noisy reset problems, the z86e40 is equipped with a reset filter of four external clocks (4tpc). if the external reset signal is less than 4tpc in duration, no reset occurs. on the fifth clock after the re- set is detected, an internal rst signal is latched and held for an internal register count of 18 external clocks, or for the duration of the external reset, whichever is longer. dur- ing the reset cycle, ds is held active low while as cycles at a rate of tpc/2. program execution begins at location 000ch, 5?0 tpc cycles after reset is released. for power-on reset, the reset output time is 5 ms. the z86e40 does not reset wdtmr, smr, p2m, and p3m registers on a stop-mode recovery operation. romless (input, active low). this pin, when connected to gnd, disables the internal rom and forces the device to function as a z86c90/c89 romless z8. (note that, when left unconnected or pulled high to v cc , the device func- tions normally as a z8 rom version). note: when using in rom mode in high emi (noisy) envi- ronment, the romless pins should be connected directly to v cc .
z86e30/e31/e40 zilog z8 4k otp microcontroller ds97z8x0502 p r e l i m i n a r y 25 1 port 0 (p07?00). port 0 is an 8-bit, bidirectional, cmos- compatible i/o port. these eight i/o lines can be config- ured under software control as a nibble i/o port, or as an address port for interfacing external memory. the input buffers are schmitt-triggered and nibble programmed. ei- ther nibble output that can be globally programmed as push-pull or open-drain. low emi output buffers can be globally programmed by the software. port 0 can be placed under handshake control. in handshake mode, port 3 lines p32 and p35 are used as handshake control lines. the handshake direction is determined by the configura- tion (input or output) assigned to port 0's upper nibble. the lower nibble must have the same direction as the upper nibble. for external memory references, port 0 provides address bits a11?8 (lower nibble) or a15?8 (lower and upper nibble) depending on the required address space. if the address range requires 12 bits or less, the upper nibble of port 0 can be programmed independently as i/o while the lower nibble is used for addressing. if one or both nibbles are needed for i/o operation, they must be configured by writing to the port 0 mode register. in romless mode, after a hardware reset, port 0 is configured as address lines a15?8, and extended timing is set to accommodate slow memory access. the initialization routine can include re- configuration to eliminate this extended timing mode. in rom mode, port 0 is defined as input after reset. port 0 can be set in the high-impedance mode if selected as an address output state, along with port 1 and the con- trol signals as , ds , and r/w (figure 18). figure 18. port 0 con?uration handshake controls /dav0 and rdy0 (p32 and p35) in 1.5 2.3v hysteresis pa d port 0 (i/o) 4 4 oen out open-drain auto latch r 500 k w
z86e30/e31/e40 z8 4k otp microcontroller zilog 26 p r e l i m i n a r y ds97z8x0502 pin functions (continued) port 1 (p17?10). port 1 is an 8-bit, bidirectional, cmos- compatible port with multiplexed address (a7?0) and data (d7?0) ports. these eight i/o lines can be pro- grammed as inputs or outputs or can be configured under software control as an address/data port for interfacing external memory. the input buffers are schmitt-triggered and the output buffers can be globally programmed as ei- ther push-pull or open-drain. low emi output buffers can be globally programmed by the software. port 1 can be placed under handshake control. in this configuration, port 3, lines p33 and p34 are used as the handshake controls rdy1 and /dav1 (ready and data available). to inter- face external memory, port 1 must be programmed for the multiplexed address/data mode. if more than 256 external locations are required, port 0 outputs the additional lines (figure 19). port 1 can be placed in the high-impedance state along with port 0, as , ds , and r/w , allowing the z86e40 to share common resources in multiprocessor and dma ap- plications. figure 19. port 1 con?uration (z86e40 only) in 1.5 2.3v hysteresis pa d oen out open-drain auto latch r 500 k w port 2 (i/o) handshake controls dav1 and rdy1 (p33 and p34) mcu
z86e30/e31/e40 zilog z8 4k otp microcontroller ds97z8x0502 p r e l i m i n a r y 27 1 port 2 (p27?20). port 2 is an 8-bit, bidirectional, cmos- compatible i/o port. these eight i/o lines can be config- ured under software control as an input or output, indepen- dently. all input buffers are schmitt-triggered. bits pro- grammed as outputs can be globally programmed as either push-pull or open-drain. low emi output buffers can be globally programmed by the software. when used as an i/o port, port 2 can be placed under handshake control. in handshake mode, port 3 lines p31 and p36 are used as handshake control lines. the handshake direction is deter- mined by the configuration (input or output) assigned to bit 7 of port 2 (figure 20). figure 20. port 2 con?uration oen out in pa d port 2 (i/o) handshake controls dav2 and rdy2 (p31 and p36) z86e40 mcu ttl level shifter auto latch r ? 500 k w open-drain
z86e30/e31/e40 z8 4k otp microcontroller zilog 28 p r e l i m i n a r y ds97z8x0502 pin functions (continued) port 3 (p37?30). port 3 is an 8-bit, cmos-compatible port with four fixed inputs (p33?30) and four fixed outputs (p37?34). these eight lines can be configured by soft- ware for interrupt and handshake control functions. port 3, pin 0 is schmitt- triggered. p31, p32, and p33 are stan- dard cmos inputs with single trip point (no auto latches) and p34, p35, p36, and p37 are push-pull output lines. low emi output buffers can be globally programmed by the software. two on-board comparators can process an- alog signals on p31 and p32 with reference to the voltage on p33. the analog function is enabled by setting the d1 of port 3 mode register (p3m). the comparator output can be outputted from p34 and p37, respectively, by setting pcon register bit d0 to 1 state. for the interrupt function, p30 and p33 are falling edge triggered interrupt inputs. p31 and p32 can be programmed as falling, rising or both edges triggered interrupt inputs (figure 21). access to counter/timer 1 is made through p31 (t in ) and p36 (t out ). handshake lines for port 0, port 1, and port 2 are also available on port 3 (table 9). note : when enabling/ or disabling analog mode, the fol- lowing is recommended: 1. allow two nop delays before reading this comparator output. 2. disable global interrupts, switch to analog mode, clear interrupts, and then re-enable interrupts. 3. irq register bits 3 to 0 must be cleared after enabling analog mode. note: p33?30 differs from the z86c30/c31/c40 in that there is no clamping diode to v cc due to the eprom high- voltage circuits. exceeding the v ih maximum specification during standard operating mode may cause the device to enter eprom mode.
z86e30/e31/e40 zilog z8 4k otp microcontroller ds97z8x0502 p r e l i m i n a r y 29 1 figure 21. port 3 con?uration d1 r247 = p3m p31 (an1) p32 (an2) p33 (ref) from stop mode recovery source 1 = analog 0 = digital irq2, tin, p31 data latch irq0, p32 data latch irq1, p33 data latch dig. an. auto latch p30 data latch irq3 port 3 (i/o or control) z86e40 mcu - + - + p30 r ? 500 k w table 9. port 3 pin assignments pin i/o ctc1 analog interrupt p0 hs p1 hs p2 hs ext p30 in irq3 p31 in t in an1 irq2 d/r p32 in an2 irq0 d/r p33 in ref irq1 d/r p34 out an1-out r/d /dm p35 out r/d p36 out t out r/d p37 out an2-out
z86e30/e31/e40 z8 4k otp microcontroller zilog 30 p r e l i m i n a r y ds97z8x0502 pin functions (continued) comparator inputs. port 3, p31, and p32, each have a comparator front end. the comparator reference voltage p33 is common to both comparators. in analog mode, p31 and p32 are the positive input of the comparators and p33 is the reference voltage of the comparators. auto latch. the auto latch puts valid cmos levels on all cmos inputs (except p33?31) that are not externally driven. whether this level is 0 or 1, cannot be determined. a valid cmos level, rather than a floating node, reduces excessive supply current flow in the input buffer. auto latches are available on port 0, port 2, and p30. there are no auto latches on p31, p32, and p33. low emi emission. the z86e40 can be programmed to operate in a low emi emission mode in the pcon register. the oscillator and all i/o ports can be programmed as low emi emission mode independently. use of this feature re- sults in: n the pre-drivers slew rate reduced to 10 ns typical. n low emi output drivers have resistance of 200 ohms (typical). n low emi oscillator. n internal sclk/tclk= xtal operation limited to a maximum of 4 mhz ?250 ns cycle time, when low emi oscillator is selected and system clock (sclk = xtal, smr reg. bit d1 =1). n note for emulation only: do not set the emulator to emulate port 1 in low emi mode. port 1 must always be configured in standard mode.
z86e30/e31/e40 zilog z8 4k otp microcontroller ds97z8x0502 p r e l i m i n a r y 31 1 functional description the mcu incorporates the following special functions to enhance the standard z8 architecture to provide the user with increased design flexibility. reset. the device is reset in one of three ways: 1. power-on reset 2. watch-dog timer 3. stop-mode recovery source note: having the auto power-on reset circuitry built-in, the mcu does not need to be connected to an external power-on reset circuit. the reset time is 5 ms (typical). the mcu does not reinitialize wdtmr, smr, p2m, and p3m registers to their reset values on a stop-mode recovery operation. note: the device v cc must rise up to the operating v cc specification before the tpor expires. program memory. the mcu can address up to 4 kb of internal program memory (figure 22). the first 12 bytes of program memory are reserved for the interrupt vectors. these locations contain six 16-bit vectors that correspond to the six available interrupts. for eprom mode, byte 12 (000ch) to address 4095 (0fffh) consists of program- mable eprom. after reset, the program counter points at the address 000ch, which is the starting address of the user program. in romless mode, the z86e40 can address up to 64 kb of external program memory. the rom/romless option is only available on the 44-pin devices. eprom protect. when in rom protect mode, and exe- cuting out of external program memory, instructions ldc, ldci, lde, and ldei cannot read internal program mem- ory. when in rom protect mode and executing out of internal program memory, instructions ldc, ldci, lde, and ldei can read internal program memory. figure 22. program memory map (romless z86e40 only) 12 11 10 9 8 7 6 5 4 3 2 1 0 external rom and ram location of first byte of instruction executed after reset interrupt vector (lower byte) interrupt vector (upper byte) irq5 irq4 irq4 irq3 irq3 irq2 irq2 irq1 irq1 irq0 irq0 irq5 on-chip one time prom external rom and ram irq5 irq4 irq4 irq3 irq3 irq2 irq2 irq1 irq1 irq0 irq0 irq5 65535 eprom romless 4096 4095
z86e30/e31/e40 z8 4k otp microcontroller zilog 32 p r e l i m i n a r y ds97z8x0502 functional description (continued) data memory (dm ). in eprom mode, the z86e40 can address up to 60 kb of external data memory beginning at location 4096. in romless mode, the z86e40 can address up to 64 kb of data memory. external data memory may be included with, or separated from, the external program memory space. dm , an optional i/o function that can be programmed to appear on pin p34, is used to distinguish between data and program memory space (figure 23). the state of the dm signal is controlled by the type of in- struction being executed. an ldc opcode references program (dm inactive) memory, and an lde instruction references data (dm active low) memory. figure 23. data memory map 65535 4096 0 external data memory not addressable external data memory eprom romless 4095
z86e30/e31/e40 zilog z8 4k otp microcontroller ds97z8x0502 p r e l i m i n a r y 33 1 register file. the register file consists of three i/o port registers, 236/125 general-purpose registers, 15 control and status registers, and three system configuration regis- ters in the expanded register group. the instructions can access registers directly or indirectly through an 8-bit ad- dress field. this allows a short 4-bit register address using the register pointer (figure 24). in the 4-bit mode, the reg- ister file is divided into 16 working register groups, each occupying 16 continuous locations. the register pointer addresses the starting location of the active working-regis- ter group. note: register bank e0?f can only be accessed through working register and indirect addressing modes. (this bank is available in z86e30/e40 only.) expanded register file (erf). the register file has been expanded to allow for additional system control registers, mapping of additional peripheral devices and input/output ports into the register address area. the z8 register ad- dress space r0 through r15 is implemented as 16 groups of 16 registers per group (figure 26). these register groups are known as the expanded register file (erf). the low nibble (d3?0) of the register pointer (rp) select the active erf group, and the high nibble (d7?4) of reg- ister rp select the working register group. three system configuration registers reside in the expanded register file at bank fh: pcon, smr, and wdtmr. the rest of the expanded register is not physically implemented and is reserved for future expansion. figure 24. register pointer register d7 d6 d5 d4 d3 d2 d1 d0 expanded register group r253 rp working register group default setting after reset = 00000000
z86e30/e31/e40 z8 4k otp microcontroller zilog 34 p r e l i m i n a r y ds97z8x0502 functional description (continued) figure 25. register pointer the upper nibble of the register file address provided by the register pointer specifies the active working-register group. r7 r6 r5 r4 r253 (register pointer) i/o ports specified working register group the lower nibble of the register file address provided by the instruction points to the specified register. r3 r2 r1 r0 register group 1 register group 0 r15 to r0 register group f r15 to r4* r3 to r0* ff f0 7f 70 6f 60 5f 50 4f 40 3f 2f 30 20 1f 10 0f 00 * expanded register group (0) is selected in this figure by handling bits d3 to d0 as "0" in register r253 (rp). ef 80 note: registers 80h through efh are available in the z86c30 only.
z86e30/e31/e40 zilog z8 4k otp microcontroller ds97z8x0502 p r e l i m i n a r y 35 1 figure 26. expanded register file architecture 7 6543210 working register group pointer expanded register group pointer %ff %fo %7f %0f %00 z8 reg. file register pointer % ff % fe % fd % fc % fb % fa % f9 % f8 % f7 % f6 % f5 % f4 % f3 % f2 % f1 % f0 spl rp flags imr irq ipr p01m p3m p2m pre0 t0 pre1 t1 tmr 0 0 0 u 0 0 u 0 0 1 u u u u 0 % (f) 0f % (f) 0e % (f) 0d % (f) 0c % (f) 0b % (f) 0a % (f) 09 % (f) 08 % (f) 07 % (f) 06 % (f) 05 % (f) 04 % (f) 03 % (f) 02 % (f) 01 % (f) 00 wdtmr smr 0 0 0 u u 0 u 1 0 1 u u u u 0 0 0 0 u u 0 u 0 0 1 u u u u 0 0 0 0 u u 0 u 0 0 1 u u u u 0 0 0 0 u u 0 u 1 0 1 u u u u 0 0 0 0 u u 0 u 1 0 1 u u u u 0 0 0 0 u u 0 u 0 0 1 u u 0 u 0 0 0 0 u u 0 u 1 0 1 0 u 0 u 0 uuu0 11 0 1 0010 00 0 0 111 1 uuuu uuuuuuuu uuuuuuuu uuuuuuuu register expanded reg. group (f) reset condition register expanded reg. group (0) reset condition register z8 ? standard control registers reset condition % (0) 03 p3 % (0) 02 p2 % (0) 01 p1 % (0) 00 p0 d7 d6 d5 d4 d3 d2 d1 d0 reserved * * * reserved reserved smr2 reserved reserved reserved reserved reserved reserved reserved reserved reserved reserved reserved pcon 1111 11 1 0 ? ** u = unknown for z86e40 (romless) reset condition: "10110110" * will not be reset with a stop mode recovery ? ** will not be reset with a stop mode recovery, except bit d0. notes: * * z86e30/e40 only z86e30/e40 only sph * u u u u u u0 0
z86e30/e31/e40 z8 4k otp microcontroller zilog 36 p r e l i m i n a r y ds97z8x0502 functional description (continued) general-purpose registers (gpr). these registers are undefined after the device is powered up. the registers keep their last value after any reset, as long as the reset occurs in the v cc voltage-specified operating range. the register r254 is general-purpose on z86e30/e31. r254 and r255 are set to 00h after any reset or stop-mode recovery. ram protect. the upper portion of the ram's address spaces 80h to efh (excluding the control registers) can be protected from reading and writing. this option can be selected during the eprom programming mode. after this option is selected, the user can activate this feature from the internal eprom. d6 of the imr control register (r251) is used to turn off/on the ram protect by loading a 0 or 1, respectively. a ??in d6 indicates ram protect enabled. ram protect is not available on the Z86E31. stack. the z86e40 external data memory or the internal register file can be used for the stack. the 16-bit stack pointer (r254?255) is used for the external stack, which can reside anywhere in the data memory for romless mode, but only from 4096 to 65535 in rom mode. an 8-bit stack pointer (r255) is used for the internal stack on the z86e30/e31/e40 that resides within the 236 general-pur- pose registers (r4?239). sph (r254) can be used as a general-purpose register when using internal stack only. r254 and r255 are set to 00h after any reset or stop- mode recovery. counter/timers. there are two 8-bit programmable counter/timers (t0 and t1), each driven by its own 6-bit programmable prescaler. the t1 prescaler is driven by in- ternal or external clock sources; however, the t0 prescaler is driven by the internal clock only (figure 27). the 6-bit prescalers can divide the input frequency of the clock source by any integer number from 1 to 64. each prescaler drives its counter, which decrements the value (1 to 256), that has been loaded into the counter. when the counter reaches the end of count, a timer interrupt request, irq4 (t0) or irq5 (t1), is generated. the counters can be programmed to start, stop, restart to continue, or restart from the initial value. the counters can also be programmed to stop upon reaching zero (single pass mode) or to automatically reload the initial value and continue counting (modulo-n continuous mode). the counters, but not the prescalers, can be read at any time without disturbing their value or count mode. the clock source for t1 is user-definable and can be either the internal microprocessor clock divided by four, or an exter- nal signal input through port 3. the timer mode register configures the external timer input (p31) as an external clock, a trigger input that can be retriggerable or non-retrig- gerable, or as a gate input for the internal clock. port 3 line p36 serves as a timer output (t out ) through which t0, t1, or the internal clock can be output. the counter/timers can be cascaded by connecting the t0 output to the input of t1.
z86e30/e31/e40 zilog z8 4k otp microcontroller ds97z8x0502 p r e l i m i n a r y 37 1 figure 27. counter/timer block diagram pre0 initial value register t0 initial value register t0 current value register 6-bit down counter 8-bit down counter ? 16 ? 4 6-bit down counter 8-bit down counter pre1 initial value register t1 initial value register t1 current value register ? 2 clock logic irq4 tout p36 irq5 internal data bus write write read internal clock gated clock triggered clock tin p31 write write read internal data bus external clock internal clock d0 (smr) ? 4 ? 2 osc d1 (smr)
z86e30/e31/e40 z8 4k otp microcontroller zilog 38 p r e l i m i n a r y ds97z8x0502 functional description (continued) interrupts. the mcu has six different interrupts from six different sources. the interrupts are maskable and priori- tized (figure 28). the six sources are divided as follows: four sources are claimed by port 3 lines p33?30) and two in counter/timers. the interrupt mask register globally or individually enables or disables the six interrupt requests (table 10). figure 28. interrupt block diagram table 10. interrupt types, sources, and vectors name source vector location comments irq0 d a v0 , irq0 0, 1 external (p32), rising/falling edge triggered irq1 irq1 2, 3 external (p33), falling edge triggered irq2 d a v2 , irq2, t in 4, 5 external (p31), rising/falling edge triggered irq3 irq3 6, 7 external (p30), falling edge triggered irq4 t0 8, 9 internal irq5 ti 10, 11 internal interrupt edge select irq (d6, d7) irq1, 3, 4, 5 irq imr ipr priority logic 6 global interrupt enable vector select interrupt request irq0 irq2
z86e30/e31/e40 zilog z8 4k otp microcontroller ds97z8x0502 p r e l i m i n a r y 39 1 when more than one interrupt is pending, priorities are re- solved by a programmable priority encoder that is con- trolled by the interrupt priority register (ipr). an interrupt machine cycle is activated when an interrupt request is granted. thus, disabling all subsequent interrupts, saves the program counter and status flags, and then branches to the program memory vector location reserved for that in- terrupt. all interrupts are vectored through locations in the program memory. this memory location and the next byte contain the 16-bit starting address of the interrupt service routine for that particular interrupt request. to accommodate polled interrupt systems, interrupt inputs are masked and the interrupt request register is polled to determine which of the interrupt requests need service. an interrupt resulting from an1 is mapped into irq2, and an interrupt from an2 is mapped into irq0. interrupts irq2 and irq0 may be rising, falling or both edge trig- gered, and are programmable by the user. the software may poll to identify the state of the pin. programming bits for the interrupt edge select are located in bits d7 and d6 of the irq register (r250). the configuration is shown in table 11. clock. the on-chip oscillator has a high-gain, parallel-res- onant amplifier for connection to a crystal, rc, ceramic resonator, or any suitable external clock source (xtal1 = input, xtal2 = output). the crystal should be at cut, 10 khz to 16 mhz max, with a series resistance (rs) less than or equal to 100 ohms. the crystal should be connected across xtal1 and xtal2 using the vendor's recommended capacitor values from each pin directly to device pin ground. the rc oscil- lator option can be selected in the programming mode. the rc oscillator configuration must be an external resis- tor connected from xtal1 to xtal2, with a frequency-set- ting capacitor from xtal1 to ground (figure 29). table 11. irq register con?uration irq interrupt edge d7 d6 p31 p32 00ff 01fr 10rf 1 1 r/f r/f notes: f = falling edge r = rising edge figure 29. oscillator con?uration xtal1 xtal2 c1 c2 c1 c2 c1 xtal1 xtal2 xtal1 xtal2 xtal1 xtal2 ceramic resonator or crystal c1, c2 = 47 pf typ * f = 8 mhz lc c1, c2 = 22 pf l = 130 m h * f = 3 mhz * rc @ 5v vcc (typ) c1 = 100 pf r = 2k f = 6 mhz external clock lr * typical value including pin parasitics
z86e30/e31/e40 z8 4k otp microcontroller zilog 40 p r e l i m i n a r y ds97z8x0502 functional description (continued) power-on reset (por). a timer circuit clocked by a ded- icated on-board rc oscillator is used for the power-on re- set (por) timer function. the por timer allows v cc and the oscillator circuit to stabilize before instruction execu- tion begins. the por timer circuit is a one-shot timer triggered by one of three conditions: 1. power fail to power ok status 2. stop-mode recovery (if d5 of smr=0) 3. wdt time-out the por time is a nominal 5 ms. bit 5 of the stop mode register (smr) determines whether the por timer is by- passed after stop-mode recovery (typical for an external clock and rc/lc oscillators with fast start up times). halt. turns off the internal cpu clock, but not the xtal oscillation. the counter/timers and external interrupt irq0, irq1, and irq2 remain active. the device is recovered by interrupts, either externally or internally generated. an in- terrupt request must be executed (enabled) to exit halt mode. after the interrupt service routine, the program con- tinues from the instruction after the halt. in order to enter stop or halt mode, it is necessary to first flush the instruction pipeline to avoid suspending exe- cution in mid-instruction. to do this, the user must execute a nop (opcode=ffh) immediately before the appropriate sleep instruction, that is: stop. this instruction turns off the internal clock and ex- ternal crystal oscillation and reduces the standby current to 10 microamperes or less. stop mode is terminated by one of the following resets: either by wdt time-out, por, a stop-mode recovery source, which is defined by the smr register or external reset. this causes the processor to restart the application program at address 000ch. port configuration register (pcon). the pcon regis- ter configures the ports individually; comparator output on port 3, open-drain on port 0 and port 1, low emi on ports 0, 1, 2 and 3, and low emi oscillator. the pcon register is located in the expanded register file at bank f, location 00 (figure 30). ff nop ; clear the pipeline 6f stop ; enter stop mode or ff nop ; clear the pipeline 7f halt ; enter halt mode figure 30. port con?uration register (pcon) (write only) 0 port 0 open drain 1 port 0 push-pull active* d7 d6 d5 d4 d3 d2 d1 d0 pcon (fh) 00h comparator output port 3 0 p34, p37 standard output* 1 p34, p37 comparator output 0 port 0 low emi 1 port 0 standard* 0 port 2 low emi 1 port 2 standard* low emi oscillator 0 low emi 1 standard* 0 port 3 low emi 1 port 3 standard* * default setting after reset 0 port 1 open drain 1 port 1 push-pull active* 0 port 1 low emi 1 port 1 standard*
z86e30/e31/e40 zilog z8 4k otp microcontroller ds97z8x0502 p r e l i m i n a r y 41 1 comparator output port 3 (d0). bit 0 controls the com- parator output in port 3. a ??in this location brings the comparator outputs to p34 and p37, and a ??releases the port to its standard i/o configuration. the default value is 0. port 1 open-drain (d1). port 1 can be configured as an open-drain by resetting this bit (d1=0) or configured as push-pull active by setting this bit (d1=1). the default val- ue is 1. port 0 open-drain (d2). port 0 can be configured as an open-drain by resetting this bit (d2=0) or configured as push-pull active by setting this bit (d2=1). the default val- ue is 1. low emi port 0 (d3). port 0 can be configured as a low emi port by resetting this bit (d3=0) or configured as a standard port by setting this bit (d3=1). the default value is 1. low emi port 1 (d4). port 1 can be configured as a low emi port by resetting this bit (d4=0) or configured as a standard port by setting this bit (d4=1). the default value is 1. note: the emulator does not support port 1 low emi mode and must be set d4 = 1. low emi port 2 (d5). port 2 can be configured as a low emi port by resetting this bit (d5=0) or configured as a standard port by setting this bit (d5=1). the default value is 1. low emi port 3 (d6). port 3 can be configured as a low emi port by resetting this bit (d6=0) or configured as a standard port by setting this bit (d6=1). the default value is 1. low emi osc (d7). this bit of the pcon register con- trols the low emi noise oscillator. a ??in this location con- figures the oscillator with standard drive. while a ??con- figures the oscillator with low noise drive, however, it does not affect the relationship of sclk and xtal. the low emi mode will reduce the drive of the oscillator (osc). the de- fault value is 1. note: 4 mhz is the maximum external clock frequency when running in the low emi oscillator mode. stop-mode recovery register (smr). this register selects the clock divide value and determines the mode of stop-mode recovery (figure 31). all bits are write only except bit 7 which is a read only. bit 7 is a flag bit that is hardware set on the condition of stop recovery and reset by a power-on cycle. bit 6 controls whether a low or high level is required from the recovery source. bit 5 controls the reset delay after recovery. bits 2, 3, and 4 of the smr register specify the stop-mode recovery source. the smr is located in bank f of the expanded register group at address 0bh.
z86e30/e31/e40 z8 4k otp microcontroller zilog 42 p r e l i m i n a r y ds97z8x0502 functional description (continued) figure 31. stop-mode recovery register (write-only except bit d7, which is read-only) d7 d6 d5 d4 d3 d2 d1 d0 smr (f) 0b sclk/tclk divide by 16 0 off 1 on stop mode recovery source 000 por and/or external reset 001 p30 010 p31 011 p32 100 p33 101 p27 110 p2 nor 0:3 111 p2 nor 0:7 stop delay 0 off 1 on stop recovery level 0 low 1 high stop flag 0 por 1 stop recovery * default setting after reset. ** default setting after reset and stop-mode recovery. ** * * * * external clock divide by 2 0 sclk/tclk =xtal/2* 1 sclk/tclk =xtal
z86e30/e31/e40 zilog z8 4k otp microcontroller ds97z8x0502 p r e l i m i n a r y 43 1 sclk/tclk divide-by-16 select (d0). this bit of the smr controls a divide-by-16 prescaler of sclk/tclk. the purpose of this control is to selectively reduce device power consumption during normal processor execution (sclk control) and/or halt mode (where tclk sources counter/timers and interrupt logic). external clock divide-by-two (d1). this bit can elimi- nate the oscillator divide-by-two circuitry. when this bit is 0, the system clock (sclk) and timer clock (tclk) are equal to the external clock frequency divided by two. the sclk/tclk is equal to the external clock frequency when this bit is set (d1=1). using this bit together with d7 of pcon further helps lower emi (i.e., d7 (pcon) = 0, d1 (smr) = 1). the default setting is zero. stop-mode recovery source (d2, d3, and d4). these three bits of the smr register specify the wake up source of the stop-mode recovery (figure 32). table 12 shows the smr source selected with the setting of d2 to d4. p33?31 cannot be used to wake up from stop mode when programmed as analog inputs. when the stop- mode recovery sources are selected in this register then smr2 register bits d0, d1 must be set to zero. note: if the port2 pin is configured as an output, this output level will be read by the smr circuitry. figure 32. stop-mode recovery source p30 p31 p32 p33 p27 stop-mode recovery edge select (smr) p33 from pads digital/analog mode select (p3m) to p33 data latch and irq1 to por reset smr smr smr d4 d3 d2 0 0 1 0 1 0 0 1 1 d4 d3 d2 1 0 0 d4 d3 d2 1 0 1 mux smr smr d4 d3 d2 1 1 0 d4 d3 d2 1 1 1 p20 p23 p20 p27 smr2 smr2 d1 d0 0 1 d1 d0 1 0 p20 p23 p20 p27 smr d4 d3 d2 0 0 0 vdd smr2 d1 d0 0 0 vdd
z86e30/e31/e40 z8 4k otp microcontroller zilog 44 p r e l i m i n a r y ds97z8x0502 functional description (continued) stop-mode recovery delay selec t (d5). the 5 ms re- set delay after stop-mode recovery is disabled by pro- gramming this bit to a zero. a ??in this bit will cause a 5 ms reset delay after stop-mode recovery. the default condition of this bit is 1. if the fast wake up mode is select- ed, the stop-mode recovery source needs to be kept ac- tive for at least 5tpc. stop-mode recovery level select (d6). a ??in this bit defines that a high level on any one of the recovery sourc- es wakes the mcu from stop mode. a 0 defines low level recovery. the default value is 0. cold or warm start (d7). this bit is set by the device upon entering stop mode. a ??in this bit indicates that the device has been reset by por (cold). a ??in this bit indicates the device was awakened by a smr source (warm). stop-mode recovery register 2 (smr2) . this register contains additional stop-mode recovery sources. when the stop-mode recovery sources are selected in this reg- ister then smr register. bits d2, d3, and d4 must be 0. watch-dog timer mode register (wdtmr). the wdt is a retriggerable one-shot timer that resets the z8 if it reaches its terminal count. the wdt is disabled after pow- er-on reset and initially enabled by executing the wdt in- struction and refreshed on subsequent executions of the wdt instruction. the wdt is driven either by an on-board rc oscillator or an external oscillator from xtal1 pin. the por clock source is selected with bit 4 of the wdt regis- ter. note: execution of the wdt instruction affects the z (ze- ro), s (sign), and v (overflow) flags. wdt time-out period (d0 and d1). bits 0 and 1 control a tap circuit that determines the time-out periods that can be obtained (table 13). the default value of d0 and d1 are 1 and 0, respectively. wdt during halt mode (d2). this bit determines whether or not the wdt is active during halt mode. a ? indicates that the wdt is active during halt. a ??dis- ables the wdt in halt mode. the default value is ?? wdt during stop mode (d3). this bit determines whether or not the wdt is active during stop mode. a ? indicates active during stop. a ??disables the wdt dur- ing stop mode. this is applicable only when the wdt clock source is the internal rc oscillator. clock source for wdt (d4). this bit determines which oscillator source is used to clock the internal por and wdt counter chain. if the bit is a 1, the internal rc oscil- lator is bypassed and the por and wdt clock source is driven from the external pin, xtal1, and the wdt is stopped in stop mode. the default configuration of this bit is 0, which selects the rc oscillator. permanent wdt. when this feature is enabled, the wdt is enabled after reset and will operate in run and halt mode. the control bits in the wdtmr do not affect the wdt operation. if the clock source of the wdt is the inter- nal rc oscillator, then the wdt will run in stop mode. if the clock source of the wdt is the xtal1 pin, then the wdt will not run in stop mode. note: wdt time-out in stop mode will not reset smr,smr2,pcon, wdtmr, p2m, p3m, ports 2 & 3 data registers. wdtmr register accessibility. the wdtmr register is accessible only during the first 60 internal system clock table 12. stop-mode recovery source d4 d3 d2 smr source selection 0 0 0 por recovery only 0 0 1 p30 transition 0 1 0 p31 transition (not in analog mode) 0 1 1 p32 transition (not in analog mode) 1 0 0 p33 transition (not in analog mode) 1 0 1 p27 transition 1 1 0 logical nor of port 2 bits 0? 1 1 1 logical nor of port 2 bits 0? smr:10 operation d1 d0 description of action 0 0 por and/or external reset recovery 0 1 logical and of p20 through p23 1 0 logical and of p20 through p27 table 13. time-out period of wdt d1 d0 time-out of the internal rc osc time-out of the system clock 0 0 5 ms 128 sclk 0 1 10 ms* 256 sclk* 1 0 20 ms 512 sclk 1 1 80 ms 2048 sclk notes: *the default setting is 10 ms.
z86e30/e31/e40 zilog z8 4k otp microcontroller ds97z8x0502 p r e l i m i n a r y 45 1 cycles from the execution of the first instruction after power-on reset, watch-dog reset or a stop-mode recovery (figures 33 and 34). after this point, the register cannot be modified by any means, intentional or otherwise. the wdtmr cannot be read and is located in bank f of the expanded register group at address location 0fh. figure 33. watch-dog timer mode register write only d7 d6 d5 d4 d3 d2 d1 d0 wdtmr (f) 0f wdt tap int rc osc system clock 00 5 ms 128 sclk 01 10 ms 256 sclk 10 20 ms 512 sclk 11 80 ms 2048 sclk wdt during halt 0 off 1 on wdt during stop 0 off 1 on xtal1/int rc select for wdt 0 on-board rc 1 xtal reserved (must be 0) * default settin g after reset * * * *
z86e30/e31/e40 z8 4k otp microcontroller zilog 46 p r e l i m i n a r y ds97z8x0502 functional description (continued) figure 34. resets and wdt clk 18 clock reset generator reset clear wdt tap select internal rc osc. ck clr 5ms por 5ms 15ms 25ms 100ms 2v operating voltage det. internal reset wdt select (wdtmr) clk source select (wdtmr) xtal vdd vlv from stop mode recovery source wdt stop delay select (smr) + - 4 clock filter wdt/por counter chain m u x reset
z86e30/e31/e40 zilog z8 4k otp microcontroller ds97z8x0502 p r e l i m i n a r y 47 1 auto reset voltage. an on-board voltage comparator checks that v cc is at the required level to ensure correct operation of the device. reset is globally driven if v cc is below v lv (figure 35). note: v cc must be in the allowed operating range prior to the minimum power-on reset time-out (t por ). figure 35. typical z86e40 v lv voltage vs. temperature -60 -40 -20 0 20 40 60 80 100 120 140 vcc (volts) 3.5 3.3 3.1 2.9 2.7 2.5 2.3 temperature ( c) 3.7
z86e30/e31/e40 z8 4k otp microcontroller zilog 48 p r e l i m i n a r y ds97z8x0502 functional description (continued) eprom mode table 14 shows the programming voltages of each pro- gramming mode. table 15, and figures that follow show the programming timing of each programming mode. fig- ure 38 shows the circuit diagram of a z86e40 program- ming adapter, which adapts from 2764a to z86e40 and figure 39 shows the z86e30/e31 programming adapter circuitry. figure 40 shows the flowchart of an intelligent programming algorithm, which is compatible with 2764a eprom (z86e40 is 4k eprom, 2764a is 8k eprom). since the eprom size of z86e30/e31/e40 differs from 2764a, the programming address range has to be set from 0000h to 0fffh for the z86e30/e40 and 0000h to 07ffh for Z86E31. otherwise, the upper portion of eprom data will overwrite the lower portion of eprom data. figure 39 shows the adaptation from the 2764a to z86e30/e31. note: eprom protect feature allows the ldc, ldci, lde, and ldei instructions from internal program memory. a rom lookup table can be used with this feature. during programming, the v pp input pin supplies the pro- gramming voltage and current to the eprom. this pin is also used to latch which eprom mode is to be used (r/w eprom or r/w option bits). the mode is set by placing the correct mode number on the least significant bits of the address and raising the epm pin above v. after a setup time, the v pp pin can then be raised or lowered. the latched eprom mode will remain until the epm pin is re- duced below v h . eprom r/w mode allows the programming of the user mode program rom. option bit r/w allows the programming of the z8 option bits. when the device is latched into option bit r/w mode, the address must then be changed to 63 decimals (000000111111 binary). the options are mapped into this address as follows: table 14 gives the proper conditions for eprom r/w op- erations, once the mode is latched. mode name mode # lsb addr eprom r/w 0 0000 option bit r/w 3 0011 bit option 7 unused 6 unused 5 32 khz xtal option 4 permanent wdt 3 auto latch disable 2 rc oscillator option 1 ram protect 0 rom protect
z86e30/e31/e40 zilog z8 4k otp microcontroller ds97z8x0502 p r e l i m i n a r y 49 1 table 14. eprom programming table programming modes v pp epm ce oe pgm addr data v cc * eprom read1 x v h v il v il v ih addr out 4.5v? eprom read2 x v h v il v il v ih addr out 5.5v? program v pp v h v il v ih v il addr in 6.4v program verify v pp v h v il v il v ih addr out 6.0v option bit pgm v pp v h v il v ih v il 63 in 6.4v option bit read x v h v il v il v ih 63 out 6.0v notes: v h = 13.0 v 0.1 v v ih = as per specific z8 dc specification vil= as per specific z8 dc specification x=not used, but must be set to v h , v ih , or v il level. nu = not used, but must be set to either v ih or v il level. i pp during programming = 40 ma maximum. i cc during programming, verify, or read = 40 ma maximum. *v cc has a tolerance of 0.25v. ? zilog recommends an eprom read at v cc = 4.5 v and 5.5 v to ensure proper device operations during the v cc after programming, but v cc = 5.0 v is acceptable. table 15. eprom programming timing parameters name min max units 1 address setup time 2 m s 2 data setup time 2 m s 3v pp setup 2 m s 4v cc setup time 2 m s 5 chip enable setup time 2 m s 6 program pulse width 0.95 1.05 ms 7 data hold time 2 m s 8oe setup time 2 m s 9 data access time 200 ns 10 data output float time 100 ns 11 overprogram pulse width/option program pulse width 2.85 ms 12 epm setup time 2 m s 13 pgm setup time 2 m s 14 address to oe setup time 2 m s 15 oe width 250 ns 16 address to oe low 125 ns
z86e30/e31/e40 z8 4k otp microcontroller zilog 50 p r e l i m i n a r y ds97z8x0502 functional description (continued) figure 36. eprom read mode timing diagram data vih vil invalid valid invalid valid vih vil address stable address address stable 9 12 epm vh vil v 4.5v ce vih vil oe vih vil vpp vh vil 5.5v pgm vih vil 3 16 5 15 15 15 cc
z86e30/e31/e40 zilog z8 4k otp microcontroller ds97z8x0502 p r e l i m i n a r y 51 1 z86e40 timing diagrams figure 37. timing diagram of eprom program and verify modes address v ih v il address stable data v ih v il data stable data out valid 1 2 10 9 3 v v h v ih epm v il 4 5 7 ce v il 6 8 11 pgm v ih v il v ih v h v 4.5v 6v oe v ih v il program cycle verify cycle 15 pp cc
z86e30/e31/e40 z8 4k otp microcontroller zilog 52 p r e l i m i n a r y ds97z8x0502 z86e40 timing diagrams (continued) figure 38. z86e40 z8 otp programming adapter for use with standard eprom programmers p20 p21 p22 p23 p24 p25 p26 p27 p30 p31 p32 p33 p34 p35 35 36 26 37 38 39 2 3 4 p36 p37 xtal1 xtal2 p04 p00 p01 p02 p03 27 30 34 5 6 p05 p06 p07 7 d0 d1 d2 d3 d4 d5 d6 d7 a0 a1 a2 a3 a4 a5 a6 a7 a0 a1 a2 a3 a4 a5 a6 a7 00 01 02 03 04 05 13 11 12 10 9 24 8 7 6 5 4 3 06 07 pgm a9 a10 a11 a12 21 23 2 27 15 16 17 18 19 a0 a1 a2 a3 a4 a5 a6 a7 25 a8 d2 d0 d1 d3 d4 d5 d6 d7 17 18 19 22 24 31 15 14 gnd epm u1 u2 0.01 m f 14 gnd 28 vcc 1 vpp c1 gnd 2764 pins z86e40 40-pin dip socket 20 cs 1 kohm r2 oe 22 1 kohm r1 a8 a9 a10 a11 a8 a9 a10 a11 12 12 1 2 40 21 20 r/w as ds reset gnd 1 13 9 12 p10 p11 p12 p13 p14 p15 p16 p17 28 29 32 33 8 10 25 pgm 16 oe 23 gnd 11 gnd vcc u3 ih5043 12.5v 16 x1 4x3 15 4 s2 5 s4 10 epm d1 1 d3 3 d2 d4 6 x x ix1 ix2 x x x 3 vcc 5.0 v 12.5 volt 0.1 m f 10 kohm 12.5v r4 12 1 kohm r3 12 gnd 1n5243 d1 2 1 c2 2 1 gnd 1 2 p1 gnd 1n5231 d2 2 1 1 kohm r5 12 5.0v v cc ce v pp v cc v pp
z86e30/e31/e40 zilog z8 4k otp microcontroller ds97z8x0502 p r e l i m i n a r y 53 1 figure 39. z86e30/e31 programming adapter circuitry gnd u3 ih5043 12.5v 16 x1 4x3 15 4 s2 5 s4 10 epm d1 1 d3 3 d2 d4 6 x x ix1 ix2 x x x 3 12.5 volt 0.1 m f 10 kohm 12.5v r4 12 1 kohm r3 12 gnd 1n5243 d1 2 1 c2 2 1 gnd 1 2 p1 gnd 1n5231 d2 2 1 1 kohm r5 12 5.0v p20 p21 p22 p23 p24 p25 p26 p27 p30 p31 p32 p33 p34 p35 24 25 19 26 27 28 1 2 3 p36 p37 xtal1 xtal2 p04 p00 p01 p02 p03 20 21 23 4 5 p05 p06 p07 6 7 d0 d1 d2 d3 d4 d5 d6 d7 a0 a1 a2 a3 a4 a5 a6 a7 a0 a1 a2 a3 a4 a5 a6 a7 00 01 02 03 04 05 13 11 12 10 9 24 8 7 6 5 4 3 06 07 pgm a9 a10 a11 a12 21 23 2 27 15 16 17 18 19 a0 a1 a2 a3 a4 a5 a6 a7 25 a8 d2 d0 d1 d3 d4 d5 d6 d7 18 11 12 13 14 15 17 16 10 9 gnd epm u1 u2 0.01 m f 14 gnd 28 1 c1 gnd 2764 pins z86e30/31 28-pin dip socket 20 cs 1 kohm r2 oe 22 1 kohm r1 a4 a5 a6 a7 a8 a9 a10 a11 12 12 1 2 vcc 5.0 v note: the programming address must be set to 0000h - 0fffh (lower 4k byte memory). for z86e30 0000h - 07ffh (lower 2k byte memory). for Z86E31 pgm oe ce v pp v cc v cc v pp v pp v cc
z86e30/e31/e40 zilog z8 4k otp microcontroller ds97z8x0502 p r e l i m i n a r y 55 1 figure 40. z86e40 programming algorithm start vcc = 6.0v vpp = 12.5v n = 0 program 1 ms pulse increment n n = 25 ? ye s no verify one byte pass fail prog. one pulse 3xn ms duration verify byte fail pass increment address last addr ? ye s no vcc = vpp = 4.5v * verify all bytes device failed addr = first location fail pass verify all bytes device passed pass fail vcc = vpp = 5.5v * note: * to ensure proper operaton, zilog recommends vcc range of the device vcc specification, but vcc = 5.0v is acceptable.
z86e30/e31/e40 z8 4k otp microcontroller zilog 56 p r e l i m i n a r y ds97z8x0502 expanded register file control registers figure 41. port con?uration register write only figure 42. stop-mode recovery register write only except bit d7, which is read only 0 port 0 open-drain 1 port 0 push-pull active* d7 d6 d5 d4 d3 d2 d1 d0 pcon (fh) 00h comparator output port 3 0 p34, p37 standard* 1 p34, p37 comparator output 0 port 0 low emi 1 port 0 standard* 0 port 2 low emi 1 port 2 standard* low emi oscillator 0 low emi 1 standard* 0 port 3 low emi 1 port 3 standard* * default setting after reset ? must be 1 for z86e30/e31 0 port 1 open-drain 1 port 1 push-pull active*? 0 port 1 low emi 1 port 1 standard*? d7 d6 d5 d4 d3 d2 d1 d0 smr (fh) 0b sclk/tclk divide-by-16 0 off 1 on stop mode recovery source 000 por only and/or external reset* 001 p30 010 p31 011 p32 100 p33 101 p27 110 p2 nor 0-3 111 p2 nor 0-7 stop delay 0 off 1 on* stop recovery level 0 low* 1 high stop flag 0 por* 1 stop recovery * default setting after reset. ** default setting after reset and stop-mode recovery. external clock divide by 2 0 sclk/tclk =xtal/2* 1 sclk/tclk =xtal ** figure 43. watch-dog timer mode register write only figure 44. stop-mode recovery register 2 write only d7 d6 d5 d4 d3 d2 d1 d0 wdtmr (f) 0f wdt tap int rc osc system clock 00 5 ms 128 sclk 01 10 ms 256 sclk 10 20 ms 512 sclk 11 80 ms 2048 sclk wdt during halt 0 off 1 on wdt during stop 0 off 1 on xtal1/int rc select for wdt 0 on-board rc 1 xtal reserved (must be 0) * default setting after reset * * * * d7 d6 d5 d4 d3 d2 d1 d0 smr2 (0f) dh note: not used in conjunction with smr source stop-mode recovery source 2 00 por only* 01 and p20,p21,p22,p23 10 and p20,p21,p22,p23,p24, p25,p26,p27 reserved (must be 0)
z86e30/e31/e40 zilog z8 4k otp microcontroller ds97z8x0502 p r e l i m i n a r y 57 1 z8 control register diagrams figure 45. reserved figure 46. timer mode register f1h: read/write figure 47. counter/timer 1 register f2h: read/write d7 d6 d5 d4 d3 d2 d1 d0 reserved (must be 0) r240 d7 d6 d5 d4 d3 d2 d1 d0 0 disable t0 count* 1 enable t0 count 0 no function* 1 load t0 0 no function* 1 load t1 0 disable t1 count* 1 enable t1 count tin modes 00 external clock input* 01 gate input 10 trigger input (non-retriggerable) 11 trigger input (retriggerable) tout modes 00 not used* 01 t0 out 10 t1 out 11 internal clock out r241 tmr default after reset = 00h d7 d6 d5 d4 d3 d2 d1 d0 t1 initial value (when written) (range: 1-256 decimal 01-00 hex) t1 current value (when read) r242 t1 figure 48. prescaler 1 register f3h: write only figure 49. counter/timer 0 register f4h; read/write figure 50. prescaler 0 register f5h: write only d7 d6 d5 d4 d3 d2 d1 d0 count mode 0 t1 single pass* 1 t1 modulo n clock source 1 t1 internal 0 t1 external timing input (tin mode) prescaler modulo (range: 1-64 decimal 01-00 hex) r243 pre1 *default after reset d7 d6 d5 d4 d3 d2 d1 d0 t0 initial value (when written) (range: 1-256 decimal 01-00 hex) t0 current value (when read) r244 t0 d7 d6 d5 d4 d3 d2 d1 d0 count mode 0 t1 single pass 1 t1 modulo n reserved (must be 0) r245 pre0 prescaler modulo (range: 1-64 decimal 01-00 hex)
z86e30/e31/e40 z8 4k otp microcontroller zilog 58 p r e l i m i n a r y ds97z8x0502 z8 control register diagrams (continued) figure 51. port 2 mode register f6h: write only figure 52. port 3 mode register f7h: write only d7 d6 d5 d4 d3 d2 d1 d0 p20 - p27 i/o definition 0 defines bit as output 1 defines bit as input* r246 p2m * default after reset d7 d6 d5 d4 d3 d2 d1 d0 r247 p3m 0 port 2 open-drain 1 port 2 push-pull active reserved (must be 0) 0 p32 = input p35 = output 1 p32 = dav0/rdy0 p35 = rdy0/dav0 00 p33 = input p34 = output 01 p33 = input 10 p34 = dm 11 p33 = dav1/rdy1 p34 = rdy1/dav1 0 p31 = input (tin) p36 = output (tout) 1 p31 = dav2/rdy2 p36 = rdy2/dav2 0 p30 = input p37 = output 0 p31, p32 digital mode 1 p31, p32 analog mode default after reset = 00h ? z86e30/e31 must be 00 ? figure 53. port 0 and 1 mode register f8h: write only z86e30/e31 only figure 54. interrupt priority register f9h: write only d7 d6 d5 d4 d3 d2 d1 d0 r248 p01m p03 C p00 mode 00 output 01 input 1x a11Ca8 stack selection 0 external 1 internal p17 C p10 mode 00 byte output? 01 byte input 10 ad7Cad0 11 high-impedance ad7Cad0, as, ds, r/w, a11Ca8, a15Ca12, if selected p07 C p04 mode 00 output 01 input 1x a15 - a12 external memory timing 0 normal 1 extended reset condition = 0100 1101b for romless condition = 1011 0110b ? z86e30/e31 must be 00 d7 d6 d5 d4 d3 d2 d1 d0 interrupt group priority 000 reserved 001 c > a > b 010 a > b > c 011 a > c > b 100 b > c > a 101 c > b > a 110 b > a > c 111 reserved irq3, irq5 priority (group a) 0 irq5 > irq3 1 irq3 > irq5 irq0, irq2 priority (group b) 0 irq2 > irq0 1 irq0 > irq2 irq1, irq4 priority (group c) 0 irq1 > irq4 1 irq4 > irq1 reserved (must be 0) r249 ipr
z86e30/e31/e40 zilog z8 4k otp microcontroller ds97z8x0502 p r e l i m i n a r y 59 1 figure 55. interrupt request register fah: read/write figure 56. interrupt mask register fbh: read/write figure 57. flag register fch: read/write d7 d6 d5 d4 d3 d2 d1 d0 r250 irq inter edge p31 p32 = 00 p31 p32 - = 01 p31 - p32 = 10 p31 - p32 - = 11 irq0 = p32 input irq1 = p33 input irq2 = p31 input irq3 = p30 input irq4 = t0 irq5 = t1 default after reset = 00h d7 d6 d5 d4 d3 d2 d1 d0 1 enables ram protect ? 1 enables irq5-irq0 (d0 = irq0) 1 enables interrupts r251 imr ? this option must be selected when rom code is submitted for rom masking, otherwise this control bit is disabled permanently. d7 d6 d5 d4 d3 d2 d1 d0 r252 flags user flag f1 user flag f2 half carry flag decimal adjust flag overflow flag sign flag zero flag carry flag figure 58. register pointer fdh: read/write figure 59. stack pointer high feh: read/write figure 60. stack pointer low ffh: read/write d7 d6 d5 d4 d3 d2 d1 d0 r253 rp expanded register file working register pointer default after reset = 00h d7 d6 d5 d4 d3 d2 d1 d0 (z86e40) stack pointer upper byte (sp8 - sp15) r254 sph (z86e30/e31) 0 = 0 state 1 = 1 state d7 d6 d5 d4 d3 d2 d1 d0 stack pointer lower byte (sp0 - sp7) r255 spl
z86e30/e31/e40 z8 4k otp microcontroller zilog 60 p r e l i m i n a r y ds97z8x0502 package information (continued) package information figure 61. 40-pin dip package diagram
z86e30/e31/e40 zilog z8 4k otp microcontroller ds97z8x0502 p r e l i m i n a r y 61 1 figure 62. 44-pin plcc package diagram figure 63. 44-pin qfp package diagram
z86e30/e31/e40 z8 4k otp microcontroller zilog 62 p r e l i m i n a r y ds97z8x0502 figure 64. 28-pin dip package diagram figure 65. 28-pin soic package diagram
z86e30/e31/e40 zilog z8 4k otp microcontroller ds97z8x0502 p r e l i m i n a r y 63 1 figure 66. 28-pin plcc package diagram
z86e30/e31/e40 z8 4k otp microcontroller zilog 64 p r e l i m i n a r y ds97z8x0502 ordering information z86e40 (16 mhz) for fast results, contact your local zilog sales office for assistance in ordering the part desired. package p = plastic dip v = plastic leaded chip carrier f = plastic quad flat pack s = soic (small outline integrated circuit) temperature s = 0 c to +70 c e = -40 c to +105 c speed 16 = 16 mhz environmental c= plastic standard e = hermetic standard 40-pin dip 44-pin plcc 44-pin qfp z86e4016psc z86e4016vsc z86e4016fsc z86e4016pec z86e4016vec z86e4016fec z86e30 (16 mhz) 28-pin dip 28-pin soic 28-pin plcc z86e3016psc z86e3016ssc z86e3016vsc z96e3016pec z86e3016sec z86e3016vec Z86E31 (16 mhz) 28-pin dip 28-pin soic 28-pin plcc Z86E3116psc Z86E3116ssc Z86E3116vsc Z86E3116pec Z86E3116sec Z86E3116vec example: z 86e40 16 p s c environmental flow temperature package speed product number zilog prefix is a z86e40, 16 mhz, dip, 0 c to +70 c, plastic standard flow
z86e30/e31/e40 zilog z8 4k otp microcontroller ds97z8x0502 p r e l i m i n a r y 65 1 ?1998 by zilog, inc. all rights reserved. no part of this document may be copied or reproduced in any form or by any means without the prior written consent of zilog, inc. the information in this document is subject to change without notice. devices sold by zilog, inc. are covered by warranty and patent indemnification provisions appearing in zilog, inc. terms and conditions of sale only. zilog, inc. makes no warranty, express, statutory, implied or by description, regarding the information set forth herein or regarding the freedom of the described devices from intellectual property infringement. zilog, inc. makes no warranty of merchantability or fitness for any purpose. zilog, inc. shall not be responsible for any errors that may appear in this document. zilog, inc. makes no commitment to update or keep current the information contained in this document. zilog? products are not authorized for use as critical components in life support devices or systems unless a specific written agreement pertaining to such intended use is executed between the customer and zilog prior to use. life support devices or systems are those which are intended for surgical implantation into the body, or which sustains life whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user. zilog, inc. 210 east hacienda ave. campbell, ca 95008-6600 telephone (408) 370-8000 fax 408 370-8056 internet: http://www.zilog.com

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