Full PDF Text Transcription for HT1381 (Reference)
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HT1381. For precise diagrams, and layout, please refer to the original PDF.
HT1380/HT1381 Serial Timekeeper Chip Features · Operating voltage: 2.0V~5.5V · Maximum input serial clock: 500kHz at VDD=2V, 2MHz at VDD=5V · Operating current: less than...
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clock: 500kHz at VDD=2V, 2MHz at VDD=5V · Operating current: less than 1mA at 2V, less than 1.2mA at 5V · TTL compatible - VIH: 2.0V~VDD+0.3V at VDD=5V - VIL: -0.3V~+0.8V at VDD=5V Applications · Microcomputer serial clock · Two data transmission modes: single-byte, or burst mode · Serial I/O transmission · All registers store BCD format · HT1380: 8-pin DIP package HT1381: 8-pin SOP package · Clock and Calendar General Description The HT1380/HT1381 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 adjust
HT1381 Datasheet
