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SHT1302
-- 时钟万年历IC
General
Description
The SHT1302
is a
serial timekeeper IC which provides seconds,
minutes, hours, day, date, month and year
information. The number of days in each month
and leap years are automatically adjusted. The SHT1302
is designed for low power
consumption and can operate in two modes: one is
the 12-hour mode with an AM/PM indicator, the
other is the 24-hour mode.
The SHT1302
has
several registers to store the corresponding
information with 8-bit data format. A 32768Hz
crystal is required to provide the correct
timing. In order to minimize the pin number, the
SHT1302 use a serial I/O transmission
method to interface with a microprocessor. Only
three wires are required: (1) RESTB, (2) SCLK
and (3) I/O. Data can be delivered 1 byte at a
time or in a burst of up to 8 bytes.
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Features
- Operating voltage: 2.0V~5.5V
- Maximum input serial clock: 500kHz
at VDD=2V, 2MHz at VDD=5V
- Operating current: less than 400nA
at 2V, less than 1.2uA at 5V
- TTL compatible
- VIH: 2.0V~VDD+0.3V
at VDD=5V
- VIL: -0.3V~+0.8V at VDD=5V
- Two data transmission modes:
single-byte or burst mode
- Serial I/O transmission
- All registers store BCD format
- SHT1302: 8-pin DIP package
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