DS1688 Overview
X1 X2 RCLR AD0-AD7 PWR KS CS ALE WR RD VCCO Crystal Input Crystal Output RAM Clear Input Mux’ed Address/Data Bus Power on Interrupt Output Kickstart Input RTC Chip Select Input RTC Address Strobe RTC Write Data Strobe RTC Read Data Strobe RAM Power Supply Output Timekeeping algorithm includes leap year pensation valid up to 2100 ORDERING INFORMATION PART # DS1688 DS1688S DS1691 DESCRIPTION RTC Chip, 28 pin DIP RTC...
DS1688 Key Features
- 64-bit Silicon serial number
- 64-bit
- Automatic
- 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