Description
The CXP80712A/80716A/80720A/80724A is a CMOS 8-bit microcomputer which consists of A/D converter, serial interface, timer/counter, time base timer, vector interruption, high precision timing pattern generation circuit, PWM generator, PWM for tuner, VISS/VASS circuit, 32kHz timer/event counter, remote control receiving circuit, VCR vertical sync separation circuit and the measuring circuit which measure signals of capstan FG and drum FG/PG and other servo systems, as well as basic configurations like 8-bit CPU, ROM, RAM and I/O port. They are integrated into a single chip. Also CXP80712A/80716A/80720A/80724A provides sleep/stop function which enables to lower power consumption and ultra-low speed instruction mode in 32kHz operation.

FEATUREs
• A wide instruction set (213 instructions) which cover various types of data
   — 16-bit arithmetic instruction/multiplication and division instructions/boolean bit operation instruction
• Minimum instruction cycle During operation 250ns/16MHz (Supply voltage 4.5 to 5.5V)
                                     During operation 122µs/32kHz
• Incorporated ROM capacity 12K bytes (CXP80712A)
                                       16K bytes (CXP80716A)
                                       20K bytes (CXP80720A)
                                       24K bytes (CXP80724A)
• Incorporated RAM capacity     800 bytes
• Peripheral functions
   — A/D converter              8-bit, 12-channel, successive approximation system
                                       (Conversion time 20.0µs/16MHz)
   — Serial Interface             Incorporated 8-bit and 8-stage FIFO, 1-channel
                                       (1 to 8 bytes auto transfer)
                                       8-bit serial I/O, 1-channel
   — Timer                         8-bit timer, 8-bit timer/counter, 19-bit time base timer,
                                       32kHz timer/counter
   — High precision timing pattern generator PPG 19 pins 32-stage programmable
                                                            RTG 5-pins 2-channel
   — PWM/DA gate output         12-bit, 2-channel (Repetitive frequency 62kHz/16MHz)
   — Servo input control             Capstan FG, Drum FG/PG, CTL input
   — VSYNC separator
   — FRC capture unit                 Incorporated 26-bit and 8-stage FIFO
   — PWM output                     14-bit, 1-channel
   — VISS/VASS circuit                Pulse duty auto detection circuit
   — Remote control receiving circuit       8-bit pulse measuring counter, 6-stage FIFO
• Interruption                                     21 factors, 15 vectors, multi-interruption possible
• Standby mode                                  SLEEP/STOP
• Package                                          100-pin plastic QFP/LQFP
• Piggyback/evaluation chip                   CXP87700 100-pin ceramic QFP/LQFP