at89s53 Datasheet - Atmel
The AT89S53 is an 8-bit microcontroller from the MCS-51 family, featuring 12KB of flash memory, 256 bytes of RAM, and a wide range of peripherals including...
📖 Datasheet Preview
📄 + 17 more pages available - Download the full PDF to see complete datasheet
⬇️ Download Complete Datasheet
Get the full 32-page technical datasheet in PDF format
📝 Component Overview
The AT89S53 is an 8-bit microcontroller from the MCS-51 family, featuring 12KB of flash memory, 256 bytes of RAM, and a wide range of peripherals including timers, counters, and serial communication interfaces. It operates at a maximum frequency of 24MHz and is designed for use in a variety of applications, including industrial control, consumer electronics, and automotive systems.
Key Features and Benefits
- 8-bit MCS-51 microcontroller core
- 12KB of flash memory
- 256 bytes of RAM
- Up to 24MHz operating frequency
- Multiple timers and counters
- Serial communication interfaces (UART, SPI)
- Support for external memory expansion
- Low power consumption modes
- Wide operating temperature range
Typical Applications
- Industrial control systems
- Consumer electronics
- Automotive systems
- Medical devices
- Telecommunication equipment
- Computer peripherals
- Robotics and automation
- Security systems
📊 Complete Technical Specifications
Absolute Maximum Ratings
| Parameter | Value |
|---|---|
| Operating Temperature | -40°C to +85°C |
| Storage Temperature | -65°C to +150°C |
| Voltage on VCC | 4.5V to 5.5V |
Electrical Characteristics
| Parameter | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Operating Current | VCC = 5V, f = 12MHz | 10mA | 15mA | 20mA | mA |
| Standby Current | VCC = 5V | 10uA | 20uA | 50uA | uA |
Package Information
- PDIP: 40-pin Plastic Dual In-Line Package
- PLCC: 44-pin Plastic Leaded Chip Carrier
Pin Configuration
- Pin 1: VCC - Positive power supply
- Pin 2: GND - Ground
🔧 Application Guidelines
Design Considerations
When designing with the AT89S53, consider the operating frequency, power consumption, and memory requirements of the application. Ensure that the chosen crystal or oscillator meets the specified frequency tolerance and drive level. Also, consider the use of external memory if the internal 12KB of flash is insufficient.
Installation Guidelines
The AT89S53 is available in PDIP and PLCC packages. Ensure that the package is properly seated and soldered to the PCB. Follow standard soldering practices to avoid damaging the device. The device should be handled with care to prevent static discharge.
Operational Notes
The AT89S53 has multiple power-saving modes, including idle and power-down modes. These modes can significantly reduce power consumption when the device is not actively executing code. However, ensure that the device is properly configured and that all necessary peripherals are disabled before entering these modes.