RTC-58321 Epson Company, RTC-58321 Datasheet
RTC-58321
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RTC-58321 Summary of contents
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... Data hold timing ........................................................................................................................................ 1 n Registers.............................................................................................................................................. 1 1. Register table ............................................................................................................................................ 1 2. Notes ........................................................................................................................................................ 1 n Register functions............................................................................................................................... 1 1. Date and time registers.............................................................................................................................. 1 2. Reset register (Control register D).............................................................................................................. 1 3. Reference signal (Control registers E and F) .............................................................................................. 1 n Package dimensions........................................................................................................................... 1 (1)RTC-58321 ............................................................................................................................................... 7 (2)RTC-58323 ............................................................................................................................................... 7 n Marking layout..................................................................................................................................... 1 n Application notes ................................................................................................................................ 1 CONTENTS ...
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... 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 ...
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... READ R 1’ CS1 R 1’ CS2 R 1’ ADDRESS WRITE R 1’ Pin functions Pin numbers Pin symbol RTC-58321 RTC-58323 WRITE 3 7 READ GND 9 13 ADDRESS WRITE 10 14 BUSY 11 15 ...
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... RTC-58321 temperature RTC-58323 *1 Data hold voltage: This is the range of power supply voltage for which the internal operation of the clock is guaranteed. I/O operations are not guaranteed. 3. Frequency characteristics Item RTC-58321 A Frequency RTC-58321 B tolerance RTC-58323 Aging Temperature characteristics *2 Voltage characteristics *2 Deviation from the frequency ...
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... RTC-58323 ( 0.5V - Min. Typ. Max. 3.6 - 0.5 0.8 0.4 1 100 500 1.5 3.0 RTC-58321 ( 0.5V - RTC-58323 ( 0.5V - Typ. Max Unit sec. ...
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Timing chart Address write Write Read Address bus in IC Data bus Data hold timing CDR 1 V IH2 VI L ...
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... RTC-58321/58323 n Registers 1. Register table Address (hexadecimal ...
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... Latch the hexadecimal value D using the ADDRESS LATCH pin, and set WRITE high to carry out the reset. 3. Reference signal (Control registers E and F) Latch the hexadecimal value using the ADDRESS LATCH pin, and set WRITE high to obtain the reference signal values Package dimensions (1) RTC-58321 (2) RTC-58323 15 divider, and the busy circuit. ...
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... There is a possibility of damage to the crystal resonator during ultrasonic cleaning. Because of the wide variation of conditions in ultrasonic cleaning equipment, the performance of this device is not guaranteed subject to ultrasonic cleaning. (5) This is a CMOS device, and the standard precautions against static electricity should be taken. Frequency tolerance RTC-58321 RTC-58323 3 4 ...
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