和泰时钟芯片ht1380/ht1381
| 品牌 |
holtek |
型号 |
ht1380/1381 |
| 批号 |
1010 |
封装 |
8sop/dip |
| 营销方式 |
现货 |
产品性质 |
热销 |
| 处理信号 |
模拟信号 |
工艺 |
半导体集成 |
ht1380/ht1381 -- serial timekeeper chip
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 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) 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.
features - operating voltage: 2.0v~5.5v
- maximum input serial clock: 500khz at vdd=2v, 2mhz at vdd=5v
- operating current: less than 1ua 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
- ht1380: 8-pin dip package
ht1381: 8-pin sop package
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