· External memory expansion space: 64K bytes

· Minimum instruction execution time can be varied from high-speed (0.4 ms) to ultra-low-speed (122 ms)

· I/O ports: 53 (N-ch open-drain: 4)

· 8-bit resolution A/D converter: 8 channels

· Serial interface: 2 channels

· Timer: 5 channels

· Supply voltage: VDD = 1.8 to 5.5 V