X5643
X5643 is CPU Supervisor manufactured by Xicor.
- Part of the X5645 comparator family.
- Part of the X5645 comparator family.
FEATURES
- Selectable watchdog timer
- Low VCC detection and reset assertion
- Five standard reset threshold voltages
- Re-program low VCC reset threshold voltage using special programming sequence
- Reset signal valid to VCC = 1V
- Determine watchdog or low voltage reset with a volatile flag bit
- Long battery life with low power consumption
- <50µA max standby current, watchdog on
- <1µA max standby current, watchdog off
- <400µA max active current during read
- 64Kbits of EEPROM
- Built-in inadvertent write protection
- Power-up/power-down protection circuitry
- Protect 0, 1/4, 1/2 or all of EEPROM array with
Block Lock™ protection
- In circuit programmable ROM mode
- 2MHz SPI interface modes (0,0 & 1,1)
- Minimize EEPROM programming time
- 32-byte page write mode
- Self-timed write cycle
- 5ms write cycle time (typical)
- 2.7V to 5.5V and 4.5V to 5.5V power supply...
