Oki Electric Industry MSM58321
The MSM 58321 is a metal gate CMOS Real Time Clock/Calendar with a battery backup function for use in bus-oriented microprocessor applications. The 4-bit bidirectional bus line method is used for the data I/O circuit; the clock is set, corrected, or read by accessing the memory.| Part No. | MSM58321 |
|---|---|
| Datasheet | MSM58321 Download |
| Manufacturer | Oki Electric Industry |
| Description | REAL TIME CLOCK/CALENDAR |
| Buy | Stock & Price |
DESCRIPTION
MSM58321 The time is read with 4-bit DATA I/O, ADDRESS WRITE, READ, and BUSY; it is written with 4-bit DATA I/O, ADDRESS WRITE, WRITE, and BUSY.FEATURES
● 7 Function-Second, Minute, Hour, Day, Day-of-Week, Month, Year● Automatic leap year calender
● 12/24 hour format
● Frequency divider 5-poststage reset
● Reference signal output
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● 32.768 kHz crystal controlled operation Single 5V power supply Back-up battery operation to VDD = 2.2V Low power dissipation 90 µW max. at VDD = 3V 2.5 mW max. at VDD = 5V
● 16 pin plastic DIP (DIP 16-P-300) FUNCTIONAL BLOCK DIAGRAM 5-poststage (O11~O15) XT XT BUSY N STOP Rp TEST Rp WRITE Rp READ Rp CS1 Rp CS2 Rp D0 D1 D2 D3 TRI-STATE CONTROL ADDRESS LATCH ADDRESS DECODER 0 1 2 3 4 5 6 7 8 9 A B C D E-F S1 S10 MI1 MI10 H1 H10 W D1 D10 MO1 MO10 Y1 Y10 D E-F 1024 Hz 1 Hz 1/60 Hz 1/3600 Hz \DATA BUS 4 E-F 4 SWITCH S1 S10 1/10 1/6 3 4 MI1 MI10 1/10 1/6 MINUTE 3 H1 H10 1/12 or 1/24 W 1/7 WEEK RFB 1 OSC 215 R BUSY R 4 3 TEST D WRIETE 1 Hz WRITE...
