®
X4643, X4645
64K, 8K x 8 Bit
Data Sheet March 29, 2005 FN8123.
0
CPU Supervisor with 64K EEPROM
FEATURES • Selectable watchdog timer • Low VCC detection and reset assertion —Four standard reset threshold
voltages —Adjust low VCC reset threshold
voltage using special programming sequence —Reset signal valid to VCC = 1V • Low power
CMOS —20µA max standby current, watchdog on —1µA standby current, watchdog off —3mA active current • 64Kbits of EEPROM —64-byte page write mode —Self-timed write cycle —5ms write cycle time (typical) • Built-in inadvertent write protection —Power-up/power-down protection circuitry • 400kHz 2-wire interface • 2.
7V to 5.
5V power supply operation • Available packa...