X5168

® X5168, X5169 (Replaces X25268, X25169) Data Sheet June 15, 2006 FN8130.2 CPU Supervisor with 16Kbit SPI EEPROM These devices combine three popular functions, Power-on Reset Control, Supply Voltage Supervision, and Block Lock Protect Serial EEPROM Memory in one package. This combination lowers system cost, reduces board space requirements, and increases reliability. Applying power to the device activates the power-on reset circuit which holds RESET/RESET active for a period of time. This allows the power supply and oscillator to stabilize before the processor can execute code. The device’s low VCC detection circuitry protects the user’s system from low voltage conditions by holding RESET/RESET active when VCC falls below a minimum VCC trip point. RESET/RESET remains asserted until VCC returns to proper operating level and stabilizes. Five industry standard VTRIP thresholds are available, however, Intersil’s unique circuits allow the threshold to be reprogrammed to meet custom requirements or to fine-tune the threshold in applications requiring higher precision. Features 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 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 16Kbits of EEPROM Built-in Inadvertent Wri...