at89c55wd Datasheet - Atmel
The AT89C55WD is a 8-bit microcontroller from the AT89C family, featuring a high-performance, low-power CMOS flash memory technology.
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📝 Component Overview
The AT89C55WD is a 8-bit microcontroller from the AT89C family, featuring a high-performance, low-power CMOS flash memory technology. It is fully compatible with the industry-standard MCS-51 instruction set and has on-chip flash memory that can be programmed and reprogrammed in the system or by a conventional nonvolatile memory programmer. The device requires only a single 4.0V to 5.5V power supply for operation.
Key Features and Benefits
- 8-bit microcontroller with 20K bytes of on-chip flash memory
- Fully compatible with the industry-standard MCS-51 instruction set
- On-chip flash memory that can be programmed and reprogrammed in the system
- Single 4.0V to 5.5V power supply for operation
- Low power consumption and high performance
- Supports various operating modes including idle and power-down modes
Typical Applications
- Embedded systems and microcontroller-based designs
- Industrial control systems and automation
- Consumer electronics and appliances
- Medical devices and equipment
- Automotive systems and accessories
- Communication devices and networking equipment
📊 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 | 4.0V to 5.5V |
Electrical Characteristics
| Parameter | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Current (Active Mode) | VCC = 5V, TA = 25°C | 10 mA | 15 mA | 20 mA | mA |
| Supply Current (Idle Mode) | VCC = 5V, TA = 25°C | 50 μA | 100 μA | 200 μA | μA |
Package Information
- PDIP: 40-pin plastic dual in-line package
- PLCC: 44-pin plastic leaded chip carrier
- TQFP: 44-pin thin quad flat package
Pin Configuration
- Pin 1: VCC - Power supply
- Pin 2: GND - Ground
🔧 Application Guidelines
Design Considerations
The AT89C55WD is a versatile microcontroller that can be used in a wide range of applications. When designing with this device, consider the operating mode, power supply, and memory requirements. The device has various operating modes, including idle and power-down modes, which can help reduce power consumption.
Installation Guidelines
The AT89C55WD is available in PDIP, PLCC, and TQFP packages. When installing the device, ensure that the package is properly seated and the pins are not bent or damaged. The device requires a single 4.0V to 5.5V power supply for operation.
Operational Notes
The AT89C55WD has on-chip flash memory that can be programmed and reprogrammed in the system. The device supports various programming modes, including serial programming and parallel programming. When programming the device, ensure that the programming voltage and current are within the specified limits.