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PT7C4563UE Datasheet(PDF) 9 Page - Pericom Semiconductor Corporation |
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PT7C4563UE Datasheet(HTML) 9 Page - Pericom Semiconductor Corporation |
9 / 18 page ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| 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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