UPD754144 Datasheet (NEC) - 4-BIT SINGLE-CHIP MICROCONTROLLERS

UPD754144, 4-BIT SINGLE-CHIP MICROCONTROLLERS

The µ PD754244 is a 4-bit single-chip microcontroller which incorporates the EEPROMTM for key-less entry application.

It incorporates a 16 × 8-bit EEPROM, a 4-Kbyte mask ROM to store software, a 128 × 4-bit RAM to store the processing data, a processing CPU, and a carrier generator which easily outp

UPD754144 Features

* On-chip EEPROM: 16 × 8 bits (mapped to the data memory) On-chip key return reset function for key-less entry System clock oscillation circuit

* µ PD754144: RC oscillator (external resistor and capacitor)

* µ PD7