Clarion NZ501E Service Manual page 12

Explanation of IC
STM8AF51AA
Automotive 8-bit MCU, with up to 128 Kbytes Flash,
EEPROM,10-bit ADC, timers, LIN, CAN, USART, SPI,
I2C, 3 V to 5.5 V
1
80
74HC4052
Dual 4-channel analog multiplexer,demultiplexer
1