{ On-chip single-power-supply flash memory (with prohibition of chip erase/block erase/writing function) { Self-programming (with boot swap function/flash shield window function) { On-chip debug function { On-chip power-on-clear (POC) circuit and low-voltage detector (LVI) { On-chip watchdog timer (operable with the internal low-speed oscillation clock) { On-chip multiplier (16 bits × 16 bits) { On-chip functions of external bus interface { On-chip key interrupt function { On-chip clock output/buzzer output controller { On-chip BCD adjustment { I/O ports: 88 (N-ch open drain: 4) { Timer: 10 channels • 16-bit timer: 8 channels • Watchdog timer: 1 channel • Real-time counter: 1 channel { Serial interface • CSI: 2 channels/UART: 1 channel • CSI: 1 channel/UART: 1 channel/simplified I2 C: 1 channel • CSI: 1 channel/UART: 1 channel/simplified I2 C: 1 channel • UART (LIN-bus supported): 1 channel • I2 C: 1 channel { 10-bit resolution A/D converter (AVREF0 = 2.3 to 5.5 V): 16 channels { 8-bit resolution D/A converter (AVREF1 = 1.8 to 5.5 V): 2 channels { Power supply voltage: VDD = 1.8 to 5.5 V { Operating ambient temperature: TA = −40 to +85°C