at89c1051 Datasheet - Atmel
The AT89C1051 is a low-power, high-performance 8-bit microcontroller with 1KB of flash memory and various peripherals.
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📝 Component Overview
The AT89C1051 is a low-power, high-performance 8-bit microcontroller with 1KB of flash memory and various peripherals. It is based on the MCS-51 architecture and features a wide range of operating modes, including idle and power-down modes, to minimize power consumption. The device has 15 I/O lines, a 16-bit timer/counter, and supports both external and internal interrupts.
Key Features and Benefits
- 1KB of reprogrammable flash memory
- 15 I/O lines
- 16-bit timer/counter
- External and internal interrupt support
- Idle and power-down operating modes for low power consumption
- Compatible with MCS-51 instruction set
- Supports both 6-clock and 12-clock operation
Typical Applications
- Industrial control systems
- Consumer electronics
- Medical devices
- Automotive systems
- Telecommunication equipment
- Computer peripherals
📊 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 |
|---|---|---|---|---|---|
| Supply Current (Active Mode) | VCC = 5V, f = 12 MHz | 5 mA | 10 mA | 15 mA | mA |
| Supply Current (Idle Mode) | VCC = 5V, f = 12 MHz | 50 μA | 100 μA | 150 μA | μA |
Package Information
- PDIP (Plastic Dual In-Line Package): 20-pin package with 0.300 inch width
- PLCC (Plastic Leaded Chip Carrier): 20-pin package with a square shape
Pin Configuration
- Pin 1: VCC - Positive power supply
- Pin 2: GND - Ground
🔧 Application Guidelines
Design Considerations
When designing with the AT89C1051, consider the power consumption requirements of your application. The device offers various operating modes to minimize power usage. Also, ensure that the external crystal or resonator used is suitable for the desired frequency and that the PCB layout is optimized for noise reduction and signal integrity.
Installation Guidelines
The AT89C1051 should be handled with care to prevent damage from static electricity. Use an anti-static wrist strap or mat when handling the device. Ensure the device is properly seated in its socket or soldered to the PCB, and that all connections are secure and meet the recommended specifications.
Operational Notes
The AT89C1051 requires a reset signal to initialize properly. Ensure that the reset circuit is properly designed and connected. Also, note that the device has a power-on reset feature that can be used to initialize the device after power-up.