8-Bit RISC MCU, 20MHz, 7KB EPROM, I2C/SPI/UART, PQFP44
8-Bit MCU, 20MHz, 7KB EPROM, I2C/SPI/UART, 44PLCC
8-bit MCU, 20MHz, 7KB EPROM, 33 I/O, 44TQFP