IN5732 4BIT SINGLE CHIP MICROCOMPUTER The IN5732 is a CMOS 4-bit single chip microcomputer that operate on low voltage, very low current and contain LCD drivers. They also contain a 4 bit parallel processing ALU, a program memory ROM, many LCD segment outputs, a prescaler, an oscillator. The IN5732 is especially suited for use in high-grade timepieces, time controllers, electronic calculators, LCD games with timepiece. The IN5732 is especially suited for use in audio equipment, copiers, facsimiles with LCD and sub CPU applications. FEATURES Supply voltage 1.5V or 3V (Mask option-selectable) Current dissipation 3.0 uA Typ. (Ag Battery version, 32KHz crystal oscillation, during timekeeping operation) 1.5 uA Typ. (Li Battery version, 32KHz crystal oscillation, during timekeeping operation) Oscillation Crystal oscillation for timekeeping (32.768 KHz); or CR oscillator. Output pins for 27 pins LCD drive Drivable LCD panel Number of Drivable LCD segment 1/3 duty 81 segments 1/2 bias 1/2 duty 54 segments 1/2 bias Static 27 segments On chip melody 3 octaves (the melody length is solfware-controlled. One Musical note function requires one byte.) Number of input 8 pins Number of out 3 pins (Output dedicated to alarm: 2 pins, general-purpose output: 1 pins pin). Possible to use LCD panel drive output pins as output pin-only ports (Mask optionselectable) ROM 2048 X 8 bits RAM 48 X 4 bits Cycle Time CR oscillation at 65 Hz 60us 32.768 KHz crystal 122us On chip step-up / step down circuit Instruction set 92 instructions Table read instruction 1 level subroutine nesting on-chip 15 bit divider for timekeeping (delivers an overflow single every 64ms/500ms when a 32.768 KHz crystal is used). HALT function 1 IN5732 ABSOLUTE MAXIMUM RATINGS at Ta=25 ,VDD=0V Parameter Maximum Supply Voltage Maximum Input Voltage Sign. VSS1 VSS2 VIN Maximum Ouptut Voltage VOUT1 VOUT2 Operating Temperature Storage Temperature Pins and Conditions S1-4, M1-4, 32Hz, TEST, 10P, OSCIN, RES 32Hz, CUP2, OSCOUT, ALM1, ALM2, LIGHT SEGOUT, COM1, COM2, COM3, CUP1 Topg Tstg Value -4.0 to +0.3 -4.0 to +0.3 VSS1-0.3 to +0.3 Unit V V VSS1-0.3 to +0.3 V VSS2-0.3 to +0.3 V -10 to +65 -30 to +125 o C C o ALLOWABLE OPERATING CONDITIONS at Ta=25 + 2oC, VDD=OV Parameter Supply Voltage Input 'H'-Level Voltage Input 'L'-Level Voltage Operating Frequency Sign. VSS1 VSS2 VIH VIL Pins and Conditions fopgl fopg2 Ta=-10 to + 65 oC, crystal OSC Ta=-10 to + 65 oC, CR OSC S1-4,M1-4, RES S1-4, M1-4, RES min -1.65 -3.3 -0.2 VSS1 typ 32 32. 768 max -1.30 -2.4 0 VSS1+0 .2 33 Unit V V V V kHz kHz ELECTRICAL CHARACTERISTICS at Ta=25 +-0.2oC VDD=0V Parameter Input Resistance Sign. RINIA RINIB Output 'H'-Level Voltage Output 'L'-Level Voltage Output 'H'-Level Voltage RIN2 VOH1 VOL1 VOH2 Output 'H'-Level Voltage VOH3 Oscillation Start Time tST Oscillation Compensation Capacitance 10P Pins and Conditions VSS1=-1.55V, VIL=VSS1+0.2V, 'L'level hold tr, *1 VSS1=-1.55V, 'L'level pull-in tr, *1 VSS1=-1.55V, TEST, RES VSS1=-1.55V, IOH=-0.4uA, *2 VSS1=-1.55V, IOL=0.4uA, *2 VSS1=-1.55V, IOH=-4uA, COM1,COM2, COM3 VSS1 =-1.35V, IOH=-250uA, ALM1, ALM2, LIGHT CO=CG=20pF, crystal OSC (CI≤25kΩ) External pin 2 min 200 typ max 2000 Unit kΩ 200 2000 kΩ 10 -0.2 300 kΩ V V V VSS2+0.2 -0.2 -0.65 8 10 -1.30 V 10 sec 12 pF IN5732 BLOCK DIAGRAM PIN DESCRIPTION Pad No. 33 Pin Name Input/Output OSCIN Input 35 OSCOUT Output 34 31 30 3 2 4 5 6 7 32 57 10P S1 S2 S3 S4 MI M2 M3 M4 RES BAK 52 53 54 LIGHT ALM1 ALM2 1 VDD 55 VSS2 VSS1 56 28 CUP1 29 CUP2 25 COM1 37 COM2 51 COM3 19 - 23 38 - 50 27 36 26 8 9 32Hz T3 TEST TEST TEST Input Function Crystal OSC mode 32.768kHz crystal is connected across OSCIN and OSCOUT for oscillation. Used as reference clock for timepiece and system clock. CR OSC mode R and C are connected across OSCIN and OSCOUT for oscillation. Used as system clock. Connected to OSCOUT and used as OSC phase compensation capacitor. Input-only port. LSI system is reset by applying V" to Sl to S4 simultaneously. Input Input pins for placing data in RAM. Input Output Output Input pin for resetting LSI system. ( - ) power supply pin for logic unit inside the LSI. For Li battery version, a capacitor must be connected across BAK and V" to prevent logic unit from malfunctionin . Output-only pin Suited for delivering signal to drive transistor for light. Output-only pin Used to deliver *4kHz, 2kHz, 1kHz modulation signal with instruction. Also used to deliver non-modulation signal. Used to deliver melody signal of 3 octaves with instruction. (+) power supply pin. (-) power supply pin. Ag battery version, Li battery version, EXT-V version: mask option selectable. Also used as power supply for LCD drive. Pins for connecting voltage step-up (step-down) capacitor. Output Output Output Test Output pins for LCD panel common plate. Segment driver Output pins for LCD panel segments. Mask option permits Seg 14 to Seg 27 (pad No.10 to 23)to be used as output ports. Test pins (not used by user) 3 IN5732 SAMPLE APPLICATION CIRCUITS (1) Ag battery used application (1/2 bias 1/3 duty): * 4 segment outputs are used for output ports. (2) Li battery used application or EXT-V Used application (1/2 bias 1/3 duty): * 4 segment outputs are used for output ports. Crystal OSC (Power supply: Ag battery version) Crystal OSC (Power supply: Li battery version) # Components inside the dot line can be disconnected for EXT- V application. 4