8-Bit RISC MCU, 20MHz, EPROM, TQFP, 33 I/O, 256B RAM
8-Bit RISC MCU, 20MHz, 7KB EPROM, TQFP, I2C, SPI, UART
8-Bit RISC MCU, 20MHz, 7KB EPROM, TQFP-44