CMOS SINGLE CHIP 8-BIT MICROCONTROLLER The IS80C31-24PL is a microcontroller manufactured by ISSI (Integrated Silicon Solution, Inc.). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** ISSI (Integrated Silicon Solution, Inc.)
- **Part Number:** IS80C31-24PL
- **Core:** 80C31 (Intel MCS-51 compatible)
- **Speed:** 24 MHz
- **Package:** PLCC (Plastic Leaded Chip Carrier)
- **Operating Voltage:** 4.5V to 5.5V
- **On-Chip ROM:** None (ROMless variant)
- **On-Chip RAM:** 128 bytes
- **I/O Ports:** 32 programmable I/O lines (four 8-bit ports)
- **Timers/Counters:** Two 16-bit timers/counters
- **Serial Port:** Full-duplex UART
- **Interrupts:** Five interrupt sources with two priority levels
- **Power Consumption:** Low-power CMOS technology
- **Operating Temperature Range:** Commercial (0°C to +70°C) or Industrial (-40°C to +85°C) depending on variant
### **Descriptions:**
- The IS80C31-24PL is a high-performance CMOS version of the 80C31 microcontroller.
- It is fully compatible with the Intel MCS-51 instruction set.
- As a ROMless variant, it requires external program memory.
- Suitable for embedded control applications requiring high-speed processing.
### **Features:**
- **MCS-51 Architecture:** Fully compatible with Intel 80C31.
- **High-Speed Operation:** 24 MHz clock frequency.
- **Low Power Consumption:** CMOS technology ensures efficient power usage.
- **Flexible Memory Expansion:** Supports external ROM/RAM up to 64KB.
- **Enhanced Interrupt Handling:** Five interrupt sources with configurable priorities.
- **Versatile I/O Capabilities:** Four bidirectional 8-bit ports.
- **On-Chip UART:** Supports serial communication.
- **Industrial-Grade Options:** Available for extended temperature ranges.
This information is based on the manufacturer's datasheet and technical documentation.
