Overview
The AT89C51ED2-SLSUM is a high-performance CMOS Flash version of the 80C51 CMOS single-chip 8-bit microcontroller. It is part of the AT89C51 series from Microchip Technology. This microcontroller retains all the features of the Atmel 80C52 and adds several advanced functionalities, including a programmable counter array, expanded RAM, a hardware watchdog timer, and improved serial communication capabilities. The device is designed for a wide range of applications requiring high-speed processing, non-volatile data storage, and versatile peripheral interfaces.
Key Specifications
| Attribute | Value |
|---|---|
| Family Name | AT89C |
| Core Processor | 80C51 |
| Program Memory Type | Flash |
| Flash Size | 64 KB |
| RAM Size | 2 KB (internal) + 1792 bytes (XRAM) |
| EEPROM Size | 2048 bytes |
| Speed | 60 MHz |
| Number of I/O Lines | 34 |
| Interface Type / Connectivity | SPI, UART, EUART |
| Peripherals | POR/PWM/Watchdog, Programmable Counter Array |
| Supply Voltage | 2.7V to 5.5V |
| Operating Temperature | -40°C to +85°C |
| Package Style | PLCC-44 |
| Mounting Method | Surface Mount |
Key Features
- 80C52 compatible and 8051 instruction compatible
- Integrated power monitor (POR/PFD) to supervise internal power supply
- In-System Programming (ISP) using standard VCC power supply
- 2048-byte Boot ROM contains low-level flash programming routines and a default serial loader
- High-speed architecture with X2 mode for improved performance
- 64 KB on-chip flash program/data memory with byte and page erase/write capabilities
- On-chip 1792 bytes expanded RAM (XRAM) and 2048 bytes EEPROM block for data storage
- Dual data pointer and variable length MOVX for slow RAM/peripherals
- Keyboard interrupt interface on port P1 and SPI interface (master/slave mode)
- 8-bit clock prescaler and 16-bit programmable counter array with high-speed output, compare/capture, and pulse width modulation capabilities
- Full-duplex enhanced UART with dedicated internal baud rate generator and low EMI (inhibit ALE)
- Hardware watchdog timer (one-time enabled with reset-out), power-off flag, and power control modes (Idle, Power-down)
Applications
The AT89C51ED2-SLSUM is suitable for a variety of applications that require high-speed processing, non-volatile data storage, and advanced peripheral interfaces. Some typical applications include:
- Alarm systems and security devices
- Motor control and automation systems
- Corded phones and telecommunications equipment
- Smart card readers and other secure data storage devices
- Industrial control systems and IoT devices
Q & A
- What is the core processor of the AT89C51ED2-SLSUM?
The core processor is the 80C51.
- How much flash memory does the AT89C51ED2-SLSUM have?
The device has 64 KB of on-chip flash program/data memory.
- What are the operating voltage and temperature ranges of the AT89C51ED2-SLSUM?
The operating voltage range is 2.7V to 5.5V, and the operating temperature range is -40°C to +85°C.
- Does the AT89C51ED2-SLSUM support In-System Programming (ISP)?
Yes, it supports ISP using the standard VCC power supply.
- What types of interfaces does the AT89C51ED2-SLSUM have?
The device has SPI, UART, and EUART interfaces.
- What is the purpose of the programmable counter array in the AT89C51ED2-SLSUM?
The programmable counter array provides high-speed output, compare/capture, and pulse width modulation capabilities.
- How much EEPROM does the AT89C51ED2-SLSUM have?
The device has 2048 bytes of EEPROM for non-volatile data storage.
- What is the X2 mode in the AT89C51ED2-SLSUM?
The X2 mode is a speed improvement mechanism that allows for independent selection for the CPU and each peripheral.
- Does the AT89C51ED2-SLSUM have a hardware watchdog timer?
Yes, it has a hardware watchdog timer that can be one-time enabled with reset-out and a power-off flag.
- What are the power control modes available in the AT89C51ED2-SLSUM?
The device has Idle and Power-down modes for reducing system power consumption.
