有个Q10 系列,性价比据说不错。比如这个: https://www.microchip.com/wwwproducts/en/PIC18F45Q10
Program Memory Type : Flash
Program Memory Size (KB) : 32
CPU Speed (MIPS/DMIPS) : 16
SRAM (B) : 2,048
Data EEPROM/HEF (bytes) : 256
Digital Communication Peripherals: 2-UART, 2-SPI, 2-I2C
Capture/Compare/PWM Peripherals : 2 CCP,
Timers : 3 x 8-bit, 4 x 16-bit
ADC Input : 35 ch, 10-bit
Number of Comparators : 2
Temperature Range (°C) : -40 to 125
Operating Voltage Range (V) : 1.8 to 5.5
Pin Count : 40
Low Power : Yes