Description

The CXP80700A is an 8-bit CMOS microcomputer that combines various functions into a single chip. It has an A/D converter, serial interface, timer/counter, PPG and RTG, PWM output, VISS/VASS circuit, 32kHz timer/counter, remote control receiving circuit, VSYNC separator, and a measurement circuit for various servo systems. The microcomputer also has an 8-bit CPU, ROM, RAM, and I/O port. It offers sleep/stop function to reduce power consumption.

Specifications and features

• Wide instruction set (213 instructions) covering various types of data
• 16-bit arithmetic/multiplication and division/boolean bit operation instructions
• Minimum instruction cycle of 250ns at 16MHz operation and 122µs at 32kHz operation
• Incorporated ROM capacity of 12K bytes (CXP80712B), 16K bytes (CXP80716B), 20K bytes (CXP80720B), or 24K bytes (CXP80724B)
• Incorporated RAM capacity of 800 bytes
• Peripheral functions:
• A/D converter of 8 bits, 12 channels, and successive approximation system (Conversion time of 20.0µs/16MHz)
• Serial interface of 8-bit and 8-stage FIFO, 1 channel (1 to 8 bytes auto transfer) 8-bit serial I/O, 1 channel
• Timer of 8-bit timer, 8-bit timer/counter, 19-bit time base timer, and 32kHz timer/counter
• High-precision timing pattern generator (PPG) for 19 pins, 32-stage programmable RTG for 5 pins, and 2 channels
• PWM/DA gate output of 12 bits, 2 channels (Repetitive frequency of 62.5kHz/16MHz)
• Servo input control of Capstan FG, Drum FG/PG, CTL input
• VSYNC separator
• FRC capture unit of 26-bit and 8-stage FIFO
• PWM output of 14 bits, 1 channel
• VISS/VASS circuit with Pulse duty auto detection circuit
• Remote control receiving circuit with an 8-bit pulse measurement counter and 6-stage FIFO
• Interruption of 21 factors and 15 vectors with multi-interruption possible
• Standby mode of SLEEP/STOP
• Package of 100-pin plastic QFP/LQFP
• Piggyback/evaluation chip of CXP87700 100-pin ceramic PQFP

Application Scenarios

The CXP80700A is used in various electronic components and devices that demand ultra-low power consumption. It is commonly found in remote controllers, sound and video players, industrial controls, automotive devices, and many more.

Comparison

Advantages
• Integrates various functions into a single chip, saving space and cost
• Offers sleep/stop function to reduce power consumption, prolonging battery life
• Has a wide instruction set with math and logical operations to perform various tasks
Disadvantages
• Has limited ROM and RAM capacity, restricting program and data storage
• Has a slow instruction cycle compared to modern microcomputers
• Not suitable for high-performance applications