4-BIT SINGLE-CHIP MICROCONTROLLERS

DESCRIPTION The µPD754244 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

文件：416.12 Kbytes 页数：88 Pages

NEC

瑞萨

MOS INTEGRATED CIRCUIT

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 • uPD754144: RC oscillator (external resistor and capacitor) • uPD754244: Crystal/ceramic oscillator • Low-voltage operation: VDD = 1.8

文件：619.1 Kbytes 页数：90 Pages

RENESAS

瑞萨

MOS INTEGRATED CIRCUIT

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 • uPD754144: RC oscillator (external resistor and capacitor) • uPD754244: Crystal/ceramic oscillator • Low-voltage operation: VDD = 1.8

文件：619.1 Kbytes 页数：90 Pages

RENESAS

瑞萨

MOS INTEGRATED CIRCUIT

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 • uPD754144: RC oscillator (external resistor and capacitor) • uPD754244: Crystal/ceramic oscillator • Low-voltage operation: VDD = 1.8

文件：619.1 Kbytes 页数：90 Pages

RENESAS

瑞萨

MOS INTEGRATED CIRCUIT

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 • uPD754144: RC oscillator (external resistor and capacitor) • uPD754244: Crystal/ceramic oscillator • Low-voltage operation: VDD = 1.8

文件：619.1 Kbytes 页数：90 Pages

RENESAS

瑞萨