HT1380 – Serial Timekeeper Chip – DIP-8 Package
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 format. A 32768Hz crystal is required to provide the correct timing. In order to minimize the pin number, the HT1380/HT1381 use a serial I/O transmission method to interface with a microprocessor. Only three wires are required: (1) REST, (2) SCLK and (3) I/O. Data can be delivered 1 byte at a time or in a burst of up to 8 bytes. Tags,Â
Features:
- Operating voltage: 2.0V ~ 5.5V
- Maximum input serial clock: 500kHz at VDD=2V,
- 2MHz at VDD=5V
- Operating current: less than 1A at 2V,less than 1.2A at 5V
- TTL compatible
- VIH: 2.0V~VDD+0.3V at VDD=5V
- VIL: 0.3V~+0.8V at VDD=5V
Features/Specs:
- Manufacturer Part No: HT1380
- Manufacturer: Holtek Semiconductor Inc
- Operating Voltage Range: 2 ~ 5.5V
- ISTB Standby Current: 2V 100 nA, 5V 100 nA
- IDD Operating Current 2V No load: 0.7 ~ 1.0A, 5V 0.7 ~ 1.2A
- IOH Source Current: 2V VOH=1.8V 0.2 ~ 0.4mA
- VIH Input Voltage: 5V ~ 2V
- VIL Input Voltage 5V ~ 0.8V
- Two data transmission modes: single-byte, or burst mode
- Serial I/O transmission
- All registers store BCD format
- Operating Temperature Range: 0°C ~ +70°C
- Mounting Style: Through Hole
- Package/Case: PDIP-8
Applications:
- Microcomputer serial clock
- Clock and Calendar
Datasheet: HT1380
Package Includes:
- 1 x HT1380 – Serial Timekeeper Chip – DIP-8 Package
Note: Product Images are shown for illustrative purposes only and may differ from the actual product.
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