FEATURES

· Serial interface : 2 channels (I2C bus mode : 1 channel)

· Large on-chip ROM & RAM

· 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

· Timer : 5 channels

· Supply voltage : VDD = 1.8 to 5.5 V