Description
CXP5076/5078 is a CMOS 4-bit microcomputer which consists of 4-bit CPU, ROM, RAM, I/O port, 8-bit timer, 8-bit timer/counter, 18-bit time base timer, 8-bit serial I/O, vector interruption, power on reset function, liquid crystal displayer (LCD) controller/driver, D/A conversion 14-bit PWM output port, a remote control reception circuit with noise eliminating circuit, 3-bit A/D converters, a 32kHz timer/event counter and a power supply voltage detection reset function. They are integrated into a single chip with the standby function, etc. which are to be operated at a low power consumption.

Features
• Instruction cycle 1.9µs/4.19MHz 122 µs/32kHz (Possible to select with the program)
• ROM capacity 8192 × 8 bits (CXP5078) 6144 × 8 bits (CXP5076)
• RAM capacity 448 × 4 bits (Including stack, display area)
• 43 general purpose I/O ports
• 8 high current output ports
• LCD controller/driver (Possible to direct drive)
    — Possible to select with the program the segment output of 16 to 32
    — Possible to select with the program the duty of static, 1/2, 1/3 and 1/4
    — Possible to select with the program the bias of 1/2, 1/3
• 14-bit PWM output for D/A conversion
• Remote control reception circuit
• 3-bit A/D converter (8 channels per circuit)
• 32kHz timer/event counter
• Power supply voltage detection reset function
• Low voltage operation (2.5V) ..... when operating in 122µs/32kHz
• Rich wake-up function
• 8-bit/4-bit variable serial I/O
• Arithmetic and logical operations possible between the entire ROM area, I/O area and the accumulator by means of the memory mapped I/O
• 8-bit timer, 8-bit timer/event counter and 18-bit time base timer, independently controlled
• 2 kinds of power down modes of sleep and stop
• Power on reset circuit (mask option)
• Provided with 80 pin plastic QFP
• Provided with 80 pin piggyback QFP (CXP5070)