FM3808 Description
The FM3808 bines a 256Kb FRAM array with a real-time clock and a system supervisor function. An external 32.768 kHz crystal drives the timekeeping function. It maintains time and date settings in the absence of system power through the user’s choice of backup power source either a capacitor or a battery.
FM3808 Key Features
- Organized as 32,752 x 8 bits
- High Endurance 100 Billion (1011) Read/Writes
- 10 year Data Retention
- NoDelay™ Writes
- 70 ns Access Time/ 130 ns Cycle Time
- Built-in Low VDD Protection
- Clock Registers in Top 16 bytes of Address Space
- Backup Power from External Capacitor or Battery
- Tracks Seconds through Centuries in BCD Format
- Tracks Leap Years through 2099