CMOS single-chip 8-bit microcontrollers The SC87C51CGA44 is a microcontroller manufactured by 大S (Siemens). Below are its specifications, descriptions, and features based on Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** 大S (Siemens)
- **Model:** SC87C51CGA44
- **Architecture:** 8-bit
- **Core:** 8051-compatible
- **Clock Speed:** Up to 24 MHz
- **Program Memory (ROM):** 8 KB (OTP or EPROM variant)
- **RAM:** 256 bytes
- **I/O Ports:** 32 (4 × 8-bit ports)
- **Timers/Counters:** 3 (Timer 0, Timer 1, and Timer 2)
- **Serial Communication:** UART (Full-duplex)
- **Interrupts:** 6 interrupt sources with 2 priority levels
- **Operating Voltage:** 4.5V to 5.5V
- **Package:** 44-pin PLCC (Plastic Leaded Chip Carrier)
- **Operating Temperature Range:** Commercial (0°C to +70°C) or Industrial (-40°C to +85°C) depending on variant
### **Descriptions and Features:**
- **8051-Compatible Core:** Fully compatible with the Intel 8051 instruction set.
- **On-Chip ROM:** Contains 8 KB of one-time programmable (OTP) or erasable programmable (EPROM) memory.
- **Expanded RAM:** Includes 256 bytes of internal RAM for data storage.
- **Enhanced Timers:** Features three 16-bit timers/counters (Timer 0, Timer 1, and Timer 2 with capture/reload).
- **Serial Port:** Built-in UART for serial communication (RS-232, SPI, or I2C with external components).
- **Power-Saving Modes:** Supports Idle and Power-Down modes for reduced power consumption.
- **High-Speed Operation:** Capable of running at up to 24 MHz for high-performance applications.
- **Wide Voltage Range:** Operates within 4.5V to 5.5V, making it suitable for 5V systems.
- **Industrial-Grade Options:** Some variants support extended temperature ranges for harsh environments.
This microcontroller is commonly used in industrial control systems, embedded applications, and consumer electronics requiring an 8051-compatible core.
