X40420

Temperature under bias ........................ 65 to +135
Storage temperature ............................. 65 to +150
Voltage on any pin with
respect to V_SS..............................................1.0V to +7V
D.C. output current ....................................................5mA
Lead temperature (soldering, 10 seconds).............. 300

Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only; functional operation of the device (at these or any other conditions above those listed in the operational sections of this specification) is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

The X40420/21 combines power-on reset control, watchdog timer, supply voltage supervision, and secondary supervision, manual reset, and Block Lock ™ protect serial EEPROM in one package. This combination lowers system cost, reduces board space requirements, and increases reliability.

Applying voltage of X40420 to V_CC activates the power on reset circuit which holds RESET/RESET active for a period of time. This allows the power supply and system oscillator to stabilize before the processor can execute code.