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PT7C4563LE Datasheet(PDF) 9 Page - Pericom Semiconductor Corporation

Part # PT7C4563LE
Description  Real-time Clock Module
PDF  18 Pages
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Manufacturer  PERICOM [Pericom Semiconductor Corporation]
Direct Link  http://www.pericom.com
Logo PERICOM - Pericom Semiconductor Corporation

PT7C4563LE Datasheet(HTML) 9 Page - Pericom Semiconductor Corporation

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2013-06-0002
PT0333-4
06/18/13
9
PT7C4563
Real-time Clock Module (I
2C Bus)
2.
Control and status register
Addr.
(hex)
Description
D7
D6
D5
D4
D3
D2
D1
D0
00
Control/status 1
(default)
0
Undefined
0
Undefined
1
Undefined
Undefined
Undefined
01
Control/status 2
AF
AIE
(default)
Undefined
Undefined
Undefined
0
Undefined
Undefined
0
0
0D
SQW control
SQWE
RS1
RS0
(default)
1
Undefined
Undefined
Undefined
Undefined
Undefined
0
0
a)
Alarm Interrupt
AIE: Alarm Interrupt Enable bit.
AIE
Data
Description
Read / Write
0
Alarm interrupt disabled
Default
1
Alarm interrupt enabled
AF: Alarm Flag
AF
Data
Description
Read
0
Alarm flag inactive
1
Alarm flag active
Write
0
Alarm flag is cleared
1
Alarm flag remains unchanged
b)
SQW control
SQWE: SQW output clock enable bit.
SQWE
Data
Description
Read / Write
0
the SQW output is inhibited and SQW output is set to high-impedance
1
the SQW output is activated
Default
RS1, RS0: SQW output frequency select.
RS1, RS0
Data
SQW output freq. (Hz)
Read / Write
00
32.768k
Default
01
1.024k
10
32
11
1



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