參數(shù)資料
型號(hào)： S-3530A
廠商： Seiko Instruments Inc.
英文描述： CMOS Real-Time Clock IC Supporting an IIC-Bus(支持IIC-BUS的CMOS實(shí)時(shí)時(shí)鐘芯片)
中文描述： CMOS實(shí)時(shí)時(shí)鐘IC支持一個(gè)IIC總線（支持IIC總線的實(shí)時(shí)時(shí)鐘芯片的CMOS）
文件頁(yè)數(shù)： 14/31頁(yè)
文件大?。?/td> 201K
代理商： S-3530A
Real-Time Clock
S-3530A
Seiko Instruments Inc.
13
NO.
INT1AE
INT1ME
INT1FE
Description
0
0
0
0
INT1 terminal output disabled (No interrupt output)
1
*
0
1
Selected frequency steady interrupt output from the INT1 terminal
2
*
1
0
Per-minute edge interrupt output from the INT1 terminal
3
*
1
1
Per-minute steady interrupt output from INT1 terminal
4
1
0
0
Per-minute alarm interrupt output from INT1 terminal
NO.
INT2AE
INT2ME
INT2FE
Description
5
0
0
0
INT2 terminal output disabled (No interrupt output)
6
*
0
1
Selected frequency steady interrupt output from the INT2 terminal
7
*
1
0
Per-minute edge interrupt output from the INT2 terminal
8
*
1
1
Per-minute steady interrupt output from INT2 terminal
9
1
0
0
Per-minute alarm interrupt output from INT2 terminal
5.
Interrupt
There are different five output formats from the INT1 and INT2 terminals, which are chosen by the INTxAE, INTxME and INTxFE
bits of the status register (x:1 or 2).
(1) Alarm interrupt output
Alarm interrupt is enabled by setting hour and minute data to the INT1 register (or INT2 register) and turning the status
register's INT1AE to "1" and INT1ME and INT1FE to "0" (or INT2AE to "1" and INT2ME and INT2FE to "0"). When set hour
data is met, low is output from the INT1 terminal (or INT2 terminal). Since the output is held, rewrite INT1AE (or INT2AE) of
the status register to "0" through serial communication to turn the output to high (OFF state).
(2) Selected frequency steady interrupt output
When you set frequency/duty data to the INT1 register (or INT2 register) and turn the status register's INT1ME to "0" and
INT1FE to "1" (or INT2ME to "0" and INT2FE to "1"), clock set at the INTx register is output from the INT1 terminal (or INT2
terminal).
(3) Per-minute edge interrupt output
When a first minute carry is performed after the status register's INT1ME is set with "1" and INT1FE with "0" (or INT2ME with
"0" and INT2FE with "1"), low is output from the INT1 terminal (or INT2 terminal). Since the output is held, rewrite INT1AE,
INT1ME and INT1FE (or INT2AE, INT1ME and INT2FE) of the status register to "0" through serial communication to turn the
output to high (OFF state). When you perform DISABLE or ENABLE communication while the minute carry processing
signal is being retained (for 10 msec), "Low" signal is output from the INTx terminal again.
(4) Per-minute steady interrupt output
When a first carry is performed after the status register's INT1ME and INT1FE are set with "1" (or INT2ME and INT2FE with
"1"), clock is output from the INT1 terminal (or INT2 terminal) with a period of one minute (50% duty).
When you perform DISABLE or ENABLE communication while the INTx terminal is at "L", "Low" signal is output from the
INTx terminal again.
Note 1 : If changing an output mode, give care to the state of the INT1 and INT2 registers and output.
Note 2 : If per-minute edge interrupt output or per-minute steady interrupt output is chosen, the INT1 and INT2 registers have no
meaning.
Table 4 Interrupt description
Note * : Don't care.
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