UPD754264 Datasheet (NEC) - 4-BIT SINGLE-CHIP MICROCONTROLLERS

UPD754264, 4-BIT SINGLE-CHIP MICROCONTROLLERS

The µPD754264 is a 4-bit single-chip microcontroller which incorporates the EEPROMTM for key-less entry application.

It incorporates a 32 × 8-bit EEPROM, a CPU performing operation, a 4-Kbyte mask ROM to store software, a 128 × 4-bit RAM to store the operation data, an 8-bit resolution A/D converter

UPD754264 Features

* On-chip EEPROM: 32 × 8 bits (mapped to the data memory)

* On-chip key return reset function for key-less entry

* On-chip low-voltage A/D converter (AVREF = 1.8 to 6.0 V), 8-bit resolution × 2 channels

* Low-voltage operation: VDD = 1.8 to 6.0 V

* Timer funct