HT1380
HT1380 is Serial Timekeeper Chip manufactured by Holtek Semiconductor.
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 patible
- VIH: 2.0V~VDD+0.3V at VDD=5V
- VIL: -0.3V~+0.8V at VDD=5V
Applications
- Microputer 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...
