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參數資料
| 型號： | HT1381 |
| 廠商： | Holtek Semiconductor Inc. |
| 英文描述： | Serial Timekeeper Chip(串行時鐘芯片) |
| 中文描述： | 串行時鐘芯片（串行時鐘芯片） |
| 文件頁數： | 1/10頁 |
| 文件大小： | 110K |
| 代理商： | HT1381 |
HT1380/HT1381
Serial Timekeeper Chip
Block Diagram
Pin Assignment
1
September 18, 2000
Features
Operating voltage: 2.0V~5.5V
Maximum input serial clock: 500kHz at
V
DD
=2V, 2MHz at V
DD
=5V
Operating current: less than 400nA at 2V,
less than 1.2 A at 5V
TTL compatible
V
IH
: 2.0V~V
DD
+0.3V at V
DD
=5V
V
IL
: 0.3V~+0.8V at V
DD
=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
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 auto-
matically adjusted. The HT1380/HT1381 is de-
signed 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 se-
rialI/Otransmissionmethodtointerfacewitha
microprocessor. Only three wires are required:
(1) REST, (2) SCLK and (3) I/O. Data can be de-
livered 1 byte at a time or in a burst of up to 8
bytes.
Applications
Microcomputer serial clock
Clock and Calendar
! " " # $
! # ! % &
%
% ! & '
& % % ! # $
($
& )
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相關代理商/技術參數 |
參數描述 |
|---|---|
| HT1381-8DIPLF | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Serial Timekeeper Chip |
| HT1381-8SOPLF | 制造商:Holtek Semiconductor Inc 功能描述:IC TIMEKEEPER SERIAL SMD SOP8 制造商:HOLTEK 功能描述:IC, TIMEKEEPER, SERIAL, SMD, SOP8 制造商:Holtek Semiconductor Inc 功能描述:IC, TIMEKEEPER, SERIAL, SMD, SOP8; Date Format:DD:MM:YYYY; Clock Format:HH:MM:SS; Clock IC Type:Timekeeper; Supply Voltage Min:2V; Supply Voltage Max:5.5V; Digital IC Case Style:SOP; No. of Pins:8; Operating Temperature Min:0C; ;RoHS Compliant: Yes |
| HT1381A | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Serial Timekeeper Chip |
| HT1382 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:I2C/3-Wire Real Time Clock |
| HT1382_1105 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:I2C/3-Wire Real Time Clock |
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