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Description: 4-bit Single-Chip Microcontroller Features: 4-bit single-chip microcontroller with ROM, RAM, and I/O ports On-chip ROM (4K bytes) On-chip RAM (128 bytes) On-chip I/O ports (8 ports) On-chip timer (1 timer) On-chip A/D converter (8-bit) On-chip serial I/O (1 channel) On-chip clock oscillator On-chip power-on reset circuit On-chip watchdog timer On-chip interrupt controller On-chip power-down mode Low power consumption Operating voltage: 2.7V to 5.5V Package: SOP28 Applications: Automotive applications Home appliances Industrial control Office automation Security systems Consumer electronics (For reference only)