Click to expand full text
Preliminary Information 64K
X4643/5
CPU Supervisor with 64K EEPROM
DESCRIPTION
8K x 8 Bit
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.
X4643 Datasheet
