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| MITSUBISHI DIGITAL ASSP MITSUBISHI DIGITAL ASSP M66009FP M66009FP 8BIT I/O EXPANDER WITH 5BIT ADDRESS 8-BIT I/O EXPANDER WITH 5-BIT ADDRESS DESCRIPTION M66009 silicon gate CMOS (complementary metal oxide semiconductor) integrated circuit converts 8-bit data from serial to parallel and vice versa. This IC has 5 address setting bits, which enable users to set a distinctive address. This IC offers a wide range of applications, such as for microcomputer input/output port extension. FEATURES * Has 5 bits for address setting * Connected to microcomputer via 4 pins (EN,CLK, DI and DO) * Input/output setting possible by the bit * Schmitt input (RESET, EN and CLK) * Wide operating temperature range (Ta = -20C to 75C) APPLICATION Microcomputer I/O port extension, etc. PIN CONFIGURATION (TOP VIEW) CLOCK INPUT CLK SERIAL DATA INPUT DI SERIAL DATA OUTPUT DO DATA ENABLE INPUT EN A0 A1 ADDRESS SETTING A2 INPUT A3 A4 GND 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 VCC RESET RESET INPUT D7 D6 D5 D4 PARALLEL DATA D3 I/O D2 D1 D0 Outline 20P2N-A M66009FP BLOCK DIAGRAM ADDRESS SETTING INPUT A0 5 A1 6 A2 7 A3 8 A4 9 DATA ENABLE INPUT EN 4 CLK 1 CLOCK INPUT 5 Clock control circuit Address check circuit 5 Address coincidence detection circuit ACK generation circuit 11 D0 12 D1 13 D2 14 D3 15 D4 16 D5 17 D6 8 DI 2 SERIAL DATA INPUT Shift register for serial input (8 bits) 8 PARALLEL DATA INPUT / OUTPUT Output latch (8 bits) RESET 19 RESET INPUT 8 18 D7 DO 3 SERIAL DATA OUTPUT Shift register for serial output (9 bits) 1 MITSUBISHI DIGITAL ASSP M66009FP 8-BIT I/O EXPANDER WITH 5-BIT ADDRESS FUNCTION M66009 semiconductor circuit converts data from serial to parallel and vice versa. Address can be set freely at users' option. It communicates with microcomputer via 4 signals lines: EN, CLK, DI and DO. It has 5-bit address setting input. Connect each address input pin to VCC or GND, then the address can be determined from among 32 patterns. When serial data arrives from microcomputer, this IC compares the address in the data to the address set with these pins. If the two addresses are the same, the given command is executed. To output serial input data in parallel, this IC converts the lower 8 bits of the 16-bit serial data into parallel, and outputs each to pins D0 to D7. The upper 8 bits are processed as address bits and command bits. To output parallel input data in series, this IC prefixes one acknowledge bit to the 8 parallel bits which respectively refer to the status of pins D0 to D7, and then outputs 9 bits in series. PIN DESCRIPTIONS Pin RESET EN CLK DI DO A0~A4 Name Reset input Data enable input Serial clock input Serial data input Serial data output Address setting input Input/Output Input Input Input Input Output Input Functions "L" level: M66009 is reset to initial state. "L" level: M66009 becomes accessible. Serial data that arrives at pin DI from microcomputer is taken into M66009 shift register at CLK rise edge. serial data is output from pin DO synchronously with CLK fall edge. Pin DO status stays at "H" level except during serial data output. Connect each to Vcc or GND to set distinctive address. Command is executed only when serial data from microcomputer includes the same address as that set by these pins. When connected to VCC, pin status is "1". When connected to GND, pin status is "0". Used to input/output parallel data. Because pull-down resistor is built in and output transistor is P-ch open drain, pins in "L" output status (equals to P-ch transistor OFF) function as input pins. Connected positive supply (5V). Used for grounding (0V). D0~D7 Parallel data input/ output Positive supply pin Grounding pin Input/Output VCC GND -- -- INPUT/OUTPUT DATA LOGIC Serial data input from pin DI is output in parallel from pins D0 thru D7, being inverted in logic. Parallel data input from pins D0 thru D7 is output in series from pin DO in the same logic. Therefore, to set I/O pins to input, DI input data should be set to "H". 2 MITSUBISHI DIGITAL ASSP M66009FP 8-BIT I/O EXPANDER WITH 5-BIT ADDRESS DATA SENDING/RECEIVING PROTOCOL AND OPERATION PROCEDURE The timing at which microcomputer communicates with M66009 is as shown in the diagram below. When microcomputer accesses to M66009, it declares the start of access by lowering pin EN status from "H" to "L". It then sends data to pins CLK and DI at the timing shown below. The access stops as pin EN status rises from "L" to "H". Given below is more detailed explanation of data sending/receiving procedure: (1) At EN fall edge, 8-bit parallel data that arrives at input/output pins D0 thru D7 is loaded into shift register for serial output. (2) At CLK rise edge, data at pin DI is taken into serial input shift register, and internal clock counter starts counting up. (3) When 5-bit address is taken in, it is compared to address set by pins A0 thru A4. If they are the same, acknowledge bit "0" is output to pin DO synchronously with CLK 8T fall edge. (When the addresses are not the same, pin DO output status stays at the "H" level.) (4) When command bits C2, C1 and C0 are all "1", operation proceeds to (5) and (6) described below. If any of these command bits are not "1" while the addresses are the same, pin DO output is fixed to "H" synchronously with CLK 9T rise, and operation is halted until EN rises. When EN rises, clock counter is reset, and M66009 becomes ready to accept a next access. (5) When the addresses are the same and the command bits are all "1", serial output operation starts. Eight-bit data latched at step (1) as described above is output in series, starting from the bit at pin D7, through pin DO synchronously with the fall edges of CLK 9T thru 16T. No operation is performed for CLK inputs after 16T, except the count up of CLK. (6) When EN rises: Output pin DO status is fixed to "H", and only when clock counter has counted 16 CLK rise edges (counter output =10H), the lower 8 bits of the 16-bit serial data is sent to output latch synchronously with the EN rise edge. The latched data is inverted in logic, and output to pins D0 thru D7 in parallel. Clock counter is then reset, completing one sequence. (Note) If the clock counter output is not 10 H when EN rises, data is not sent to output latch. Output pin DO is fixed to "H", clock counter is reset, and M66009 becomes ready to accept a next access. EN CLK 1T DI A4 2T A3 A2 A1 A0 6T C2 "1" Address bits 7T C1 "1" 8T C0 "1" Data bits 9T DI7 DI6 DI5 DI4 DI3 DI2 15T 16T DI1 DI0 Command bits( V ) ACK0 DO DO7 DO6 DO5 DO4 DO3 DO2 DO1 DO0 ( V ) Command bits (C2, C1, C0) = (1, 1, 1) Data Communication protocol 3 MITSUBISHI DIGITAL ASSP M66009FP 8-BIT I/O EXPANDER WITH 5-BIT ADDRESS ACKNOWLEDGE BIT ACK0 Acknowledge bit ACK0 is output only when address in serial input data is the same as that set by pins A0 thru A4. It is output from pin DO as ACK0 ="0" ("L") synchronously with CLK 8T fall. INITIAL STATUS AFTER RESET If "L" is input to RESET, M66009 is put in the conditions specified below: Input state ("L" output state) (Output p-channel transistor off) "H" output state (Output n-channel transistor off) I/O pins D0 thru D7 DO output INPUT AND OUTPUT EQUIVALENT CIRCUITS Ru( V 1) DI, A0~A4 CLK, EN, RESET Ru( V 2) DO D0~D7 RD ( V 1) Pull-up resistor Ru is built in pin DI. Input Configuration 1 ( V 2) Pull-up resistor Ru is built in pin CLK and EN. Input Configuration 2 Output Configuration RD: Pull-down resistor Input/Output Configuration 4 MITSUBISHI DIGITAL ASSP M66009FP 8-BIT I/O EXPANDER WITH 5-BIT ADDRESS ABSOLUTE MAXIMUM RATINGS Symbol VCC VI VO Pd Tstg Parameter Supply voltage Input voltage Output voltage Power dissipation Storage temperature conditions Ratings -0.5 ~ +7.0 -0.5 ~ VCC + 0.5 -0.5 ~ VCC + 0.5 500 -65 ~ 150 Unit V V V mW C DO, D0~D7 RECOMMENDED OPERATIONAL CONDITIONS Symbol VCC VI VO Topr Parameter Supply voltage Input voltage Output voltage Operating temperature Min. 4.5 0 0 -20 Limits Typ. Max. 5.5 VCC VCC 75 Unit V V V C DO, D0~D7 ELECTRICAL CHARACTERISTICS (Ta = -20 ~ 75C, VCC = 5V 10% and GND = 0V unless otherwise noted) Symbol VIH VIL VIH VIL VT+ VT- Vh VOL VOH RD RU IOSH II IO Parameter "H" input voltage "L" input voltage "H" input voltage "L" input voltage Positive threshold voltage Negative threshold voltage Hysteresis width "L" output voltage "H" output voltage D0~D7 Pull-down resistance Pull-up resistance "H" output short circuit current Input current Output leak current EN, CLK, DI D0~D7 RESET, A0~A4 DO DO Test conditions DI, A0~A4 D0~D7 Min. 2.0 3.8 1.2 2.4 0.7 0.6 VI=VT+,VT-, VCC=4.5V, IOL=4mA VI=VT+, VT-, VCC=4.5V, IOH=-2mA VO=0~VCC VI=0~VCC VO=0V, VCC=5V VI=0~VCC, VCC=5.5V VO=0~VCC, VCC=5.5V VCC=5.5V, VI=VCC output open D0~D7: VI=GND ("L" output) 0.4 3.0 20 20 -25 5.0 10.0 0.4 mA 1.2 Limits Typ. Max. 0.8 Unit V V V V V V V V V k k mA A A CLK, EN, RESET ICC Static supply current SWITCHING CHARACTERISTICS (Ta = -20 ~ 75C, VCC = 5V 10% and GND = 0V) Symbol tPZH tPHZ tPZL tPLZ tPHZ Parameter Output "Z-H" propagation time Output "H-Z" propagation time Output "Z-L" propagation time Output "L-Z" propagation time Output "H-Z" propagation time EN-D0~D7 CLK-D0 RESET-D0~D7 Test conditions CL=50pF (Note 1) CL=50pF, RL=2k (Note 1) CL=50pF (Note 1) Min. Limits Typ. Max. 1.0 2.0 350 350 2.0 Unit s s ns ns s 5 MITSUBISHI DIGITAL ASSP M66009FP 8-BIT I/O EXPANDER WITH 5-BIT ADDRESS TIMING CONDITIONS Symbol tW tsu Parameter CLK, EN, RESET pulse width Setup time DI-CLK EN-CLK D0~D7-EN DI-CLK EN-CLK D0~D7-EN EN-RESET Test conditions Min. 250 120 120 120 120 120 120 120 Limits Typ. Max. Unit ns ns (Note 1) th trec Hold time Recovery time ns ns NOTE 1: TEST CIRCUIT Input VCC RL P.G. 50 DUT CL DO, D0~D7 (1) Pulse generator (PG) characteristics: tr = tf = 6ns (10%- 90%) (2) Capacitance CL includes connection floating capacitance and probe input capacitance. 6 MITSUBISHI DIGITAL ASSP M66009FP 8-BIT I/O EXPANDER WITH 5-BIT ADDRESS TIMING CHARTS tw CLK 1.5V tPLZ DO tw 3V 1.5V 1.5V 0V tPZL ~VCC CLK VOL tsu th 3V 1.5V 0V DI 1.5V 1.5V 0V 3V 10% 0.8V 3V EN 1.5V tPZH 2.0V D0~D7 0V 1.5V 0V tPHZ 90% VOH EN 1.5V tsu th D0~D7 50% 50% VCC 0V 3V 0V 3V RESET 1.5V 0V tPHZ 90% D0~D7 0V VOH CLK 1.5V 1.5V tsu th EN 1.5V 1.5V 3V 0V 3V 0V 3V RESET 1.5V 0V trec 3V EN 1.5V 0V 7 MITSUBISHI DIGITAL ASSP M66009FP 8-BIT I/O EXPANDER WITH 5-BIT ADDRESS APPLICATION EXAMPLE SCLK SOUT SIN P0 RESET CLK A0~A4 DI DO D0~D7 EN M66009 VCC or GND I/O-1 8 Microcomputer RESET CLK A0~A4 DI DO D0~D7 EN M66009 VCC or GND 8 I/O-2 8 |
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