20-pin 8-bit single-chip microcontroller 78K0S/KA1+ The UPD78F9221MC-5A4-A is a microcontroller manufactured by NEC (now part of Renesas Electronics). Below are its key specifications, descriptions, and features based on available information:
### **Specifications:**
- **Manufacturer:** NEC (Renesas Electronics)
- **Core:** 78K0R 16-bit CPU
- **Operating Frequency:** Up to 20 MHz
- **Program Memory (Flash):** 32 KB
- **RAM:** 1 KB
- **Data Flash:** 4 KB (for data storage)
- **Operating Voltage:** 2.7 V to 5.5 V
- **Operating Temperature Range:** -40°C to +85°C
- **Package:** 44-pin LQFP (Low-profile Quad Flat Package)
- **I/O Ports:** Up to 38 general-purpose I/O pins
- **Timers:** Multiple timers (16-bit timer, watchdog timer, real-time clock)
- **Communication Interfaces:**
- UART (Serial interface)
- I²C
- CSI (Clock-synchronous serial interface)
- **A/D Converter:** 10-bit, 8 channels
- **D/A Converter:** None
- **Low-Power Modes:** HALT, STOP modes for power saving
- **On-Chip Debugging:** Supports single-wire debugging
### **Descriptions & Features:**
- **High-Performance 16-bit Core:** The 78K0R CPU provides efficient processing with low power consumption.
- **Embedded Flash Memory:** Allows for in-system programming (ISP) and firmware updates.
- **Wide Operating Voltage:** Supports applications from 2.7 V to 5.5 V, making it suitable for battery-powered devices.
- **Robust Peripheral Set:** Includes timers, serial interfaces, and ADC for versatile embedded applications.
- **Industrial-Grade Reliability:** Designed for industrial and consumer electronics with extended temperature support.
- **Compact Package:** The 44-pin LQFP package is suitable for space-constrained designs.
This microcontroller is commonly used in applications such as:
- Home appliances
- Industrial control systems
- Sensor interfaces
- Motor control
- Consumer electronics
For detailed datasheets and application notes, refer to NEC/Renesas official documentation.
