RTC-58323 Ver la hoja de datos (PDF) - Seiko Epson Corp
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RTC-58323 Datasheet PDF : 12 Pages
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EPSON
4BIT REAL TIME CLOCK MODULE with I/O CONNECTIONS
RTC-58321/58323
n Overview
The RTC-58321/58323 is a CMOS real time clock modules with perpetual calendar function developed for microcomputer applications.
It has a built-in 32.768 kHz quartz resonator, and provides clock and calendar registers for year, month, day, day-of-week, hours, minutes and
seconds, with 12-hour/24-hour selection, plus automatic leap-year correction with software selection for local calendars, and an additional
periodic reference signal output.
Being a CMOS device, it has a very low power consumption for battery back-up purposes.
n Features
l Adjustment-free built-in quartz resonator keeps component count low.
l Built-in clock and calendar registers for year, month, day, day-of-week, hours, minutes and seconds.
l 12-hour/24-hour selection.
l Automatic leap-year correction, with software selection for local calendars.
l Counter start, stop and reset functions.
l Periodic reference signal output selectable: 1024 Hz, or 1 second, 1 minute or 1 hour intervals.
l Data bus is 4-bit bidirectional, with memory-type reads and writes.
l CMOS device, for very low power consumption, and long battery back-up period.
l Compatible at pin and function levels with the MSM58321 RS.
n Pin connections
1. CS2
2. WRITE
3. READ
4. D0
5. D1
6. D2
7. D3
8. GND
14 to 16. VDD
13. CS1
12. TEST
11. STOP
10 BUSY
9. ADDRESS WRITE
* Connect power supply positive side to pin 16.
1 to 4. NC
5. CS2
6. WRITE
7. READ
8. D0
9. D1
10. D2
11. D3
18 to 24. VDD
17. CS1
16. TEST
15. STOP
14. BUSY
13. ADDRESS WRITE
12. GND
NC: Pins are fixed low.
* Connect power supply positive side to pin 24.
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