8-Bit PIC MCU, 20MHz, 3.5KB EPROM, SSOP-28, I2C/SPI
8-Bit 20MHz PIC MCU, 3.5KB MROM, 128B RAM, I2C/SPI, DIP-28
8-Bit MCU, 20MHz, 3.5KB OTP, 28SOIC, I2C/SPI