DS1688
Description
The DS1688/DS1691 is a real time clock (RTC) designed as a successor to the industry standard DS1285, DS1385, DS1485, and DS1585 PC real time clocks.
Key Features
- +3 or +5 volt operation
- 64-bit Silicon serial number
- Crystal select bit allows RTC to operate with 6 pF or
- 114 bytes user NVRAM
- Auxiliary battery input
- RAM clear input
- Century register
- 32 KHz output for power management
- 32-bit VCC powered elapsed time counter
- 32-bit VBAT powered elapsed time counter
