BUY MQ4VE https://www.utsource.net/itm/p/4903097.html

Description: MQ4VE is a low-power, low-voltage, low-cost, 8-pin SOP microcontroller from Freescale. Features: Low power consumption (1.8V to 5.5V) Up to 32KB Flash memory Up to 1KB RAM Up to 8KB EEPROM Up to 4KB ROM Up to 16-bit timer Up to 8-channel 10-bit A/D converter Up to 4-channel 8-bit PWM Up to 4-channel 16-bit timer Up to 8-channel 8-bit PWM Up to 4-channel 8-bit D/A converter Up to 1-channel UART Up to 2-channel SPI Up to 2-channel I2C Applications: Automotive Industrial control Home appliances Security systems Medical equipment Consumer electronics (For reference only)