CMOS single-chip 8-bit microcontrollers The **SC80C31BCGA44** is a microcontroller manufactured by **PHILIPS** (now NXP Semiconductors). Below are its key specifications, descriptions, and features based on factual data:
### **Specifications:**
- **Manufacturer:** PHILIPS (NXP Semiconductors)
- **Core:** 80C51 (8-bit microcontroller)
- **Architecture:** MCS-51
- **Clock Speed:** Up to **33 MHz**
- **Program Memory (ROM):** **None (ROM-less)**, requires external memory
- **RAM:** **128 bytes** (internal)
- **I/O Pins:** **32** (4 ports of 8 bits each)
- **Timers:** **3** (two 16-bit timers/counters, one additional timer)
- **Serial Interface:** **UART** (full-duplex)
- **Interrupts:** **6** interrupt sources (2 external, 3 timer-based, 1 serial)
- **Package:** **CGA44** (44-pin Ceramic Grid Array)
- **Operating Voltage:** **4.5V to 5.5V**
- **Operating Temperature:** **Commercial (0°C to +70°C) or Industrial (-40°C to +85°C)**
### **Descriptions:**
- The **SC80C31BCGA44** is a high-performance CMOS version of the 80C51 microcontroller.
- It is **ROM-less**, meaning it requires external program memory (EPROM, Flash, etc.).
- Designed for embedded control applications requiring high-speed processing.
- Fully static operation allows clock speeds down to **DC (0 Hz)** for power-saving modes.
### **Features:**
- **Low Power Consumption:** CMOS technology for reduced power usage.
- **Enhanced Speed:** Up to **33 MHz** operation (3x faster than standard 80C51).
- **Idle & Power-Down Modes:** Supports power-saving modes.
- **Boolean Processor:** Bit-addressable I/O and memory for efficient control.
- **On-Chip Oscillator:** Supports crystal or external clock input.
- **Expanded Address Space:** Supports up to **64 KB** of external program/data memory.
This microcontroller is commonly used in industrial control, automotive systems, and communication devices requiring high-speed 80C51 compatibility.
*(Note: For exact details, refer to the official PHILIPS/NXP datasheet.)*
