8-Bit RISC MCU, 20MHz, 3.5KB EPROM, SSOP-28, I2C/SPI
8-Bit PIC MCU, 20MHz, 3.5KB EPROM, I2C/SPI, DIP-28
8-Bit PIC MCU, 20MHz, 3.5KB EPROM, SOIC, I2C/SPI