RTC-58321B Epson Toyocom Corporation, RTC-58321B Datasheet
RTC-58321B
Specifications of RTC-58321B
SE3212
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RTC-58321B Summary of contents
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... 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 ...
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... RTC-58321/58323 n Block diagram n Pin functions Pin numbers Pin symbol RTC-58321 RTC-58323 ADDRESS bypass capacitor (minimum 0.01 mF) must be connected between V Input/output CS Input Chip select. When high, device can be accessed. 2 WRITE Input Set high to write. READ Input Set high to read Both Address/data bus. ...
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... 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 at 25 ºC. ...
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... Ta = 25ºCºC Symbol Conditions Page - ± 0.5V, RTC-58321 ( -10 to 70º ± 0.5V, RTC-58323 ( -30 to 85ºC) DD Min. Typ. Max. 3 0.5 DD 0.8 0.4 1 100 500 1.5 3 ± 0.5V, RTC-58321 ( -10 to 70º ± 0.5V, RTC-58323 ( -30 to 85ºC) DD Min. Typ. Max 0 0 Unit sec. Unit ...
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Timing chart 7. Data hold timing Page - 5 EPSON ...
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... RTC-58321/58323 n Registers 1. Register table Address (hexadecimal Notes (1) The device uses positive logic, and a logic high voltage corresponds register bit. (2) Do not set the clock to impossible dates (17: February 30th, for example). The results are unpredictable. (3) When the device is powered on, the initial settings of all bits are undefined. ...
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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 え (2) RTC-58323 15 divider, and the busy circuit. Page - 7 EPSON (Unit:mm) ...
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... RTC-58321/58323 n Marking layout RTC58321 EPSON 8162C Logo mark Note: The illustration is a general representation of the content and the location of information on the label, and is not a detailed specification of the typeface, size or positioning of printing used on the label. n Application notes (1) In order to realize low-power operation, the device has a high impedance; the shaded portion in the figure below is highly susceptible to inductance effects, and should be kept clear of signal lines ...
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Overview .................................................................................................................................................... Features ..................................................................................................................................................... Pin connections......................................................................................................................................... Block diagram............................................................................................................................................ Pin functions.............................................................................................................................................. Characteristics ...