AT89C2051-12PU
IC MCU 8BIT 2KB FLASH 20DIP
Embedded Microcontrollers
20-DIP (0.300", 7.62mm)
89C
Active
$1.90 / unit (market reference)
MOQ: 1 pcs
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Parameters
| Parameter | Value |
|---|---|
| Brand | Microchip Technology |
| Model | AT89C2051-12PU |
| Package / Case | 20-DIP (0.300", 7.62mm) |
| Mounting Type | Through Hole |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Core Processor | 8051 |
| Speed | 12MHz |
| Program Memory Size | 2KB (2K x 8) |
| RAM Size | 128 x 8 |
| Number of I/O | 15 |
| Voltage - Supply | 2.7V ~ 6V |
| Connectivity | UART/USART |
| Peripherals | LED |
| Supplier Device Package | 20-PDIP |
| RoHS | RoHS |
| Part Status | Active |
Application & Notes
AT89C2051-12PU by Microchip Technology is a 8051 microcontroller widely used in industrial control, motor drives, IoT devices, 3D printer mainboards, and consumer electronics. The 20-DIP (0.300", 7.62mm) package fits automated SMT assembly. Operating temperature is -40°C ~ 85°C (TA) — verify your application environment. Pin-compatible domestic alternatives include GigaDevice GD32 series and Artery AT32 series — note GD32 ADC specs may differ slightly from ST originals.
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All Technical Specifications
| Speed | 12MHz |
| RAM Size | 128 x 8 |
| Core Size | 8-Bit |
| Peripherals | LED |
| Connectivity | UART/USART |
| Number of I/O | 15 |
| Core Processor | 8051 |
| Oscillator Type | Internal |
| Program Memory Size | 2KB (2K x 8) |
| Program Memory Type | FLASH |
| Voltage - Supply (Vcc/Vdd) | 2.7V ~ 6V |
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