Low-voltage and high-speed operation with the 3.3-V single power supply (25 MHz/3.3 V) is achieved. The lineup of products with on-chip flash memories of 512 KB, 384 KB, and 256 KB contributes to the customer's system design and development. Smooth replacement is available due to pin compatibility with the H8S/2357 group. (The H8S/2329 incorporates the EMLE pin.) An on-chip debugger function is incorporated in the H8S/2329EF, enabling you to implement a development environment at lower cost.