CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER The S87C52 is a microcontroller manufactured by Intel. Below are the factual specifications, descriptions, and features based on Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** Intel
- **Core:** 8-bit 8051 architecture
- **Clock Speed:** Up to 12 MHz
- **Program Memory (ROM):** 8 KB (OTP - One-Time Programmable)
- **RAM:** 256 bytes
- **I/O Ports:** 32 programmable I/O lines (four 8-bit ports)
- **Timers/Counters:** Three 16-bit timers (Timer 0, Timer 1, and Timer 2)
- **Serial Communication:** Full-duplex UART
- **Interrupts:** Six interrupt sources with two priority levels
- **Power Supply:** 5V ±10%
- **Operating Temperature:** Commercial (0°C to +70°C) or Industrial (-40°C to +85°C) variants
- **Package:** 40-pin DIP (Dual In-line Package) or other available options
### **Descriptions:**
- The S87C52 is part of Intel’s MCS-51 microcontroller family, based on the 8051 core.
- It is a low-power, high-performance CMOS variant with OTP (One-Time Programmable) ROM, making it suitable for embedded applications requiring firmware stability.
- The microcontroller includes enhanced features such as an additional timer (Timer 2) compared to earlier 8051 models.
### **Features:**
- **8051-Compatible Instruction Set** – Ensures backward compatibility with existing 8051 software.
- **On-Chip OTP ROM** – 8 KB of One-Time Programmable memory for code storage.
- **256 Bytes of Internal RAM** – Includes 128 bytes of standard RAM and 128 bytes of Special Function Register (SFR) space.
- **Power-Saving Modes** – Includes Idle and Power-Down modes for reduced power consumption.
- **Enhanced UART** – Supports full-duplex serial communication.
- **Multiple Interrupt Sources** – Six interrupt sources with configurable priority levels.
- **Wide Operating Voltage Range** – Typically operates at 5V with tolerance.
This information is strictly based on the manufacturer's specifications and datasheets.
