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HT1380

Holtek Semiconductor Inc
Part Number HT1380
Manufacturer Holtek Semiconductor Inc
Description Serial Timekeeper Chip
Published Mar 26, 2005
Detailed Description HT1380/HT1381 Serial Timekeeper Chip Features · Operating voltage: 2.0V~5.5V · Maximum input serial clock: 500kHz at VD...
Datasheet PDF File HT1380 PDF File

HT1380
HT1380

Overview
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 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 adjusted.
The HT1380/HT1381 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 HT1380/HT1381 has several registers to store the corresponding information with 8-bit data f...


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