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PT7C4337 Datasheet, PDF (2/25 Pages) List of Unclassifed Manufacturers – Real-time Clock Module (I2C Bus)
Data Sheet
PT7C4337
Real-time Clock Module (I2C Bus)
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Contents
Product Features ............................................................................................................................................................................... 1
Product Description .......................................................................................................................................................................... 1
Pin Assignment.................................................................................................................................................................................. 3
Pin Description .................................................................................................................................................................................. 3
Function Block .................................................................................................................................................................................. 4
Recommended Layout for Crystal .................................................................................................................................................. 4
Crystal Specifications ....................................................................................................................................................................... 4
Function Description......................................................................................................................................................................... 5
Overview of Functions .................................................................................................................................................................. 5
Registers......................................................................................................................................................................................... 6
Control and status register........................................................................................................................................................... 7
Oscillator related bits .............................................................................................................................................................. 7
Square wave frequency selection bits ..................................................................................................................................... 7
Interrupt related bits ................................................................................................................................................................ 8
Time Counter .............................................................................................................................................................................. 9
Days of the week Counter ......................................................................................................................................................... 10
Calendar Counter ...................................................................................................................................................................... 10
Alarm Register .......................................................................................................................................................................... 11
Alarm Function ........................................................................................................................................................................... 12
I2C Bus Interface............................................................................................................................................................................. 14
Overview of I2C-BUS .................................................................................................................................................................. 14
System Configuration ................................................................................................................................................................. 14
Starting and Stopping I2C Bus Communications ..................................................................................................................... 15
Slave Address .............................................................................................................................................................................. 17
Maximum Ratings........................................................................................................................................................................... 19
Recommended Operating Conditions ........................................................................................................................................... 19
DC Electrical Characteristics......................................................................................................................................................... 20
AC Electrical Characteristics......................................................................................................................................................... 21
Mechanical Information ................................................................................................................................................................. 22
PT0205(02/07)
2
Ver: 1