seiko epson corporation 1 pf658-06 E0C621C 4-bit single chip microcomputer l core cpu architecture l r/f converter l remote-control carrier output l lcd driver n description the E0C621C is a single-chip microcomputer made up of the 4-bit core cpu e0c6200a, rom, ram, remote controller, r/f converter, svd circuit, lcd driver, watchdog timer and time base counter. the E0C621C is most suitable for remote controllers with temperature measurement functions, such as a remote control unit for an air conditioner. n features l cmos lsi 4-bit parallel processing l twin clock .............................................crystal oscillation circuit (with built-in drain capacitance) 32.768khz (typ.) cr or ceramic oscillation circuit (mask option) 455khz (typ.) / 1mhz (max.) l instruction set ........................................ 108 instructions l instruction execution time ..................... during operation at 32.768khz : 153sec, 214sec, 366sec (depending on instruction) during operation at 455khz : 11sec, 15sec, 26sec during operation at 1mhz : 5sec, 7sec, 12sec l rom capacity ....................................... 4,096 words 12 bits l ram capacity ........................................ 208 words 4 bits l input port ............................................... 8 bits (pull up resistors may be supplemented by mask option) l output port ............................................ 4 bits (complementary output or nch open drain output may be se- lected by mask option) buzzer, clock and rem (carrier, dc) outputs may be set by software l i/o port .................................................. 4 bits l lcd driver ............................................. 34 segments 1C4 commons static drive or 1/2C1/4 duty dynamic drive may be selected by software l remote controller ................................. infrared remote-control carrier output and dc output (level output) soft-timer mode or hard-timer mode may be selected by software l r/f converter ........................................ 1 reference resistance 2 sensors, 16-bit counter dc bias sensor may be connected l time base counter ................................ clock timer 1 system l watchdog timer l supply voltage detection (svd) circuit .. 2.3 0.15v l interrupts ............................................... external : input port interrupt 2 systems internal : timer interrupt 1 system remote controller interrupt 1 system r/f converter interrupt 1 system l supply voltage ...................................... 2.2v to 5.5v l current consumption ............................ halt mode (3.0v) : 3.0a (typ.) operating mode (32.768khz/3.0v) : 7.0a (typ.) operating mode (455khz/3.0v) : 170a (typ.) operating mode (1mhz/3.0v) : 250a (typ.) l package ................................................ qfp5-80pin (plastic) die form wide voltage operation products
2 E0C621C n block diagram com0? seg0?3 osc1 osc2 reset ram 208 words x 4 bits rom 4,096 words x 12 bits osc system reset control interrupt generator osc3 osc4 k00?3 k10?3 test r00 / remcr ( * ) r01 / remdc ( * ) r02 / fout ( * ) r03 / bz ( * ) p00?3 input port test port output port remote controller timer lcd driver power controller svd r/f converter v dd v d1 v adj v c1 3 ca, cb v ss rfin rfout ref sen0 sen1 remcr remdc i/o port * output is selected by software core cpu e0c6200a
3 E0C621C n pin configuration qfp5-80pin n pin description pin name v dd v ss v d1 v c1 v c2 v c3 v adj ca, cb osc1 osc2 osc3 osc4 com0?om3 seg0?eg33 k00?03 k10?13 p00?03 r00 r01 r02 r03 ref sen0, sen1 rfin rfout reset test pin no. 18 11 15 38 39 40 37 41, 42 13 14 16 17 43?6 47?0 32?9 28?5 36?3 23 22 21 20 1 4, 5 9 10 19 24 function power supply pin (+) power supply pin (? oscillation and internal logic system regulated voltage output pin lcd system regulated voltage output pin lcd system booster voltage output pin (v c1 2) lcd system booster voltage output pin (v c1 3) v c1 voltage adjustment pin voltage booster capacitor connecting pin crystal oscillation input pin crystal oscillation output pin ceramic or cr oscillation input pin (selected by mask option) ceramic or cr oscillation output pin (selected by mask option) lcd common output pin (static or 1/2?/4 duty dynamic drive, programmable) lcd segment output pin (dc output may be selected by mask option) input port pin input port pin i/o port pin output port pin (dc or remcr output may be selected by software) output port pin (dc or remdc output may be selected by software) output port pin (dc or fout output may be selected by software) output port pin (dc or bz output may be selected by software) reference resistance connecting pin for r/f converter sensor connecting pin for r/f converter r/f converter cr oscillation input pin r/f converter oscillation frequency output pin initial reset input pin testing input pin in/out (i) (i) o o o o i i o i o o o i i i/o o o o o o o i o i i 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 ref n.c. n.c. sen0 sen1 n.c. n.c. n.c. rfin rfout v ss n.c. osc1 osc2 v d1 osc3 osc4 v dd reset r03 pin no. pin name 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 r02 r01 r00 test k13 k12 k11 k10 k03 k02 k01 k00 p03 p02 p01 p00 v adj v c1 v c2 v c3 pin no. pin name 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 ca cb com0 com1 com2 com3 seg0 seg1 seg2 seg3 seg4 seg5 seg6 seg7 seg8 seg9 seg10 seg11 seg12 seg13 pin no. pin name 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 n.c. : no connection seg14 seg15 seg16 seg17 seg18 seg19 seg20 seg21 seg22 seg23 seg24 seg25 seg26 seg27 seg28 seg29 seg30 seg31 seg32 seg33 pin no. pin name 41 64 25 40 index 24 1 80 65 E0C621C
4 E0C621C n electrical characteristics l absolute maximum ratings l dc characteristics rating symbol unit value supply voltage input voltage (1) input voltage (2) permissible total output current * 1 operating temperature storage temperature soldering temperature / time permissible dissipation * 2 * 1 * 2 v dd v i v iosc s i vdd topr tstg tsol p d v v v ma ? ? mw -0.5 to 7.0 -0.5 to v dd + 0.3 -0.5 to v d1 + 0.3 10 -40 to 85 -65 to 150 260?, 10sec (lead section) 250 the permissible total output current is the sum total of the current (average current) that simultaneously flows from the output pins (or is drawn in). in case of plastic package (qfp5-80pin). (v ss = 0v) condition symbol min. typ. max. unit remark supply voltage oscillation frequency lcd output voltage v dd f osc1 f osc3 v c1 2.2 300 3.0 32.768 500 1.05 5.5 1,300 1.60 v khz khz v v ss = 0v duty 50?% (ta = -40 to 85?) characteristic symbol min. typ. max. unit condition high level input voltage (1) high level input voltage (2) low level input voltage (1) low level input voltage (2) high level input current low level input current (1) low level input current (2) high level output current low level output current common output current segment output current (during lcd output) segment output current (during dc output) v ih1 v ih2 v il1 v il2 i ih i il1 i il2 i oh1 i ol1 i oh2 i ol2 i oh3 i ol3 i oh4 i ol4 0.8? dd 0.9? dd 0 0 0 -0.5 -15 3 3 3 200 -10 v dd v dd 0.2? dd 0.1? dd 0.5 0 -5 -1 -3 -3 -200 v v v v a a a ma ma a a a a a a v ih = 3.0v v il1 = v ss without pull up resistor v il2 = v ss with pull up resistor v oh1 = 0.9? dd v ol1 = 0.1? dd v oh2 = v dd - 0.05v v ol2 = v c3 + 0.05v v oh3 = v dd - 0.05v v ol3 = v c3 + 0.05v v oh4 = 0.9? dd v ol4 = 0.1? dd k00?03, k10?13 p00?03 reset, test k00?03, k10?13 p00?03 reset, test k00?03, k10?13 p00?03 reset, test k00?03, k10?13 p00?03 k00?03, k10?13 p00?03 reset, test r00?03, p00?03 rfout r00?03, p00?03 rfout com0?om3 seg0?eg33 seg0?eg33 v ss = 0v, v dd = 3.0v, f osc1 = 32.768khz, ta = 25 c, v d1 /v c1 /v c2 /v c3 are internal voltage, c1?6 = 0.1 f) (unless otherwise specified: l recommended operating conditions
5 E0C621C l analog circuit characteristics and current consumption characteristic symbol min. typ. max. unit condition lcd drive voltage svd voltage svd circuit response time power current consumption * 1 * 2 * 3 v c1 v c2 v c3 v svd t svd i op 0.95 2? c1 0.9 3? c1 0.9 2.15 1.05 2.30 3 7 170 250 40 10 1.15 2? c1 + 0.1 3? c1 + 0.1 2.45 100 6 15 300 500 120 30 v v v v s a na a a a a v adj = v c1 , i c1 = 5 a connect 1m w load resistor between v ss and v c2 (without panel load) connect 1m w load resistor between v ss and v c3 (without panel load) during halt (32khz) during execution (32khz) * 1 during execution (455khz) * 1 during execution (1mhz) * 1 during execution (32khz) * 2 during execution (32khz) * 3 the r/f converter and svd circuit are in off status. the r/f converter is in on status. the svd circuit is in off status. the r/f converter is in off status. the svd circuit is in on status. (unless otherwise specified: v ss = 0v, v dd = 3.0v, f osc1 = 32.768khz, c g = 25pf, ta = 25 c, v d1 /v c1 /v c2 /v c3 are internal voltage, c1?6 = 0.1 f) without panel load l oscillation characteristics the oscillation characteristics change depending on the conditions (components used, board pattern, etc.). use the follow- ing characteristics as reference values. osc1 crystal oscillation circuit osc3 ceramic oscillation circuit characteristic symbol min. typ. max. unit condition oscillation start voltage oscillation stop voltage built-in capacitance (drain) frequency/voltage deviation frequency/ic deviation frequency adjustment range harmonic oscillation start voltage permitted leak resistance vsta vstp c d ? f/ ? v ? f/ ? ic ? f/ ? c g v hho r leak 2.2 2.2 -10 35 200 20 5 10 7 v v pf ppm ppm ppm v m w t sta 3sec t stp 10sec including incidental capacitance inside ic v dd = 2.2 to 5.5v c g = 5 to 25pf c g = 5pf between osc1 and v dd , v ss (unless otherwise specified: v ss = 0v, v dd = 3.0v, crystal: c-002r, ci = 35k w , c g = 25pf, c d = built-in, ta = 25?) (v dd ) (v dd ) (v dd ) characteristic symbol min. typ. max. unit condition oscillation start voltage oscillation start time oscillation stop voltage vsta t sta vstp 2.2 2.2 3 v ms v v dd = 2.2 to 5.5v (unless otherwise specified: v ss = 0v, v dd = 3.0v, ceramic oscillator: 1mhz, c gc = c dc = 100pf, ta = 25?) (v dd ) (v dd ) characteristic symbol min. typ. max. unit condition oscillation frequency dispersion oscillation start voltage oscillation start time oscillation stop voltage f osc3 vsta t sta vstp -30 2.2 2.2 (1mhz) 30 3 % v ms v v dd = 2.2 to 5.5v (unless otherwise specified: v ss = 0v, v dd = 3.0v, r cr = 33k w , ta = 25?) (v dd ) (v dd ) osc3 cr oscillation circuit
6 E0C621C l characteristic curves ? cr oscillation frequency characteristic the oscillation characteristics change depending on the conditions (components used, board pattern, etc.). use the following characteristics as reference values and evaluate the characteristics on the actual product. cr oscillation frequency characteristic ? r/f converter sensor resistance - oscillation frequency ratio characteristic the following figure shows the oscillation frequency ratio (ratio of oscillation frequency by the reference resistance to oscillation frequency by the sensor resistance) when the following elements are connected. (typ.) if the r/f conversion uses sen0 or sen1, both characteristics will be the same. reference resistance (r ref ) ................... 10k w sensor resistance (r sen0 , r sen1 ) ........... 10k w to 20m w oscillating capacitor (c rf ) ....................... 2,200pf 10k 20k 50k 100k 200k 200k 100k 500k 1m 2m external resistance r cr [ w ] cr oscillation frequency f osc3 [hz] 30k 40k 300k 1.3m recommended oscillation range v dd = 2.2 to 5.5 v v ss = 0 v ta = 25? typ. value oscillation frequency ratio - resistance curve 1k 0.001 sensor resistance [ w ] oscillation frequency ratio 0.01 0.1 1.0 10k 100k 1m 10m v dd = 2.2 to 5.5 v v ss = 0 v ta = -40 to 85 c
7 E0C621C ? r/f converter resistance - oscillation frequency characteristic cr oscillation frequency of the r/f converter disperses in each sampling. therefore, the initial setting value of the measurement counter should be decided after considering the fluctuation margin of the cr oscillation frequency by the reference resistance and sensor resistance to be used for the measurement. note: ? the following curves are characteristic when the oscillating capacitor is 2,200pf. ? typical oscillation frequency is characteristic when v dd = 3.0v and ta = 25 c. resistance - oscillation frequency curve (sen0, sen1) resistance - oscillation frequency curve (ref) 1k 0.1 resistance [ w ] oscillation frequency [khz] 1.0 10 100 10k 100k 1m 10m v dd = 2.2 to 5.5 v v ss = 0 v ta = -40 to 85 c oscillating capacitor: 2,200 pf max typ min 1k 0.1 1.0 10 100 10k 100k 1m 10m resistance [ w ] oscillation frequency [khz] v dd = 2.2 to 5.5 v v ss = 0 v ta = -40 to 85 c oscillating capacitor: 2,200 pf max typ min
8 E0C621C n basic external connection diagram note: the above table is simply an example, and is not guaranteed to work. ca cb test v dd v d1 v adj v c1 v c2 v c3 osc1 osc2 osc3 osc4 reset v ss c1 c2 ra1 c3 c4 c5 c gx c gc c dc c6 3.0 v or 5.0 v x'tal cr * 1 * 2 r cr k13 | k10 k03 | k00 p03 | p00 r03 (bz) r02 (fout) r01 (remdc) r00 (remcr) seg0 | seg33 com0 | com3 rfout rfin ref sen0 sen1 c rf r ref r sen0 r sen1 E0C621C lcd panel * 1: ceramic oscillation * 2: cr oscillation cp + ra2 x'tal c gx cr c gc c dc r cr r ref r sen0 r sen1 c rf ra1 ra2 c1?6 cp * 3: made by ishizuka electronics corporation crystal oscillator trimmer capacitor ceramic oscillator gate capacitor drain capacitor cr oscillating resistor reference resistance for r/f conversion sensor 0 for r/f conversion (dc bias) sensor 1 for r/f conversion (dc bias) capacitor for r/f conversion resistor for v c1 adjustment resistor for v c1 adjustment capacitor power capacitor 32.768khz, c i (max.) = 35k w 5?5pf 455khz (typ.) 100pf 100pf 33k w (980khz, typ.) 50k w 503at-2 * 3 503at-2 * 3 2,200pf open (v c1 =1.0v) 2m w (v c1 =1.5v) short (v c1 =1.0v) 1m w (v c1 =1.5v) 0.1 f 3.3 f unit: mm n package dimensions 20 0.1 25.6 0.4 41 64 14 0.1 19.6 0.4 25 40 index 0.35 0.1 24 1 80 65 2.7 0.1 0.26 3.4 max 2.8 1.5 0 12 0.15 0.05 0.8 plastic qfp5-80pin
E0C621C notice: no part of this material may be reproduced or duplicated in any form or by any means without the written permission of seiko ep son. seiko epson reserves the right to make changes to this material without notice. seiko epson does not assume any liability of any kind arising out of any inaccuracies contained in this material or due to its application or use in any product or circuit and, further, there is n o representation that this material is applicable to products requiring high level reliability, such as, medical products. moreover, no license to an y intellectual property rights is granted by implication or otherwise, and there is no representation or warranty that anything made in accord ance with this material will be free from any patent or copyright infringement of a third party. this material or portions thereof may contain technology or the subject relating to strategic products under the control of the foreign exchange and foreign trade control law of japan and may require an export license from the ministry of international trade and industry or other approval from another government agency. ? seiko epson corporation 1999 all right reserved. seiko epson corporation electronic devices marketing division ic marketing & engineering group ed international marketing department i (europe & u.s.a.) 421-8, hino, hino-shi, tokyo 191-8501, japan phone : 042-587-5812 fax : 042-587-5564 ed international marketing department ii (asia) 421-8, hino, hino-shi, tokyo 191-8501, japan phone : 042-587-5814 fax : 042-587-5110
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