NXP offers the HCS08, HC08, and RS08 8-bit processor cores for entry level designs. The HCS08 core is optimized for operating economy and low power consumption. It features a 50MHz CPU and 0.25 micron flash technology with multiple serial communications options, memory security, and on-chip in-circuit emulation. The object code is compatible with NXP’s legacy HC05 and HC08 cores and is upward compatible to other NXP architectures. The HC08 core features a large array of peripherals including EEPROM, 8- or 10-bit analog-to-digital (A/D) converters, multichannel timers, and a wide variety of communications protocols. Note that the HC08 core is the legacy to the HCS08 core so all future designs will be based on HCS08 technology. Lastly, the RS08 core is designed for ultra-entry level applications requiring devices with small pin counts and 16 KB of memory or lower. This core is a reduced version of the HCS08 which makes it more efficient and cost effective for simple electromechanical devices that are migrating to solid-state electronic operation or disposable devices.