AT89C51-24JI
IC MCU 8BIT 4KB FLASH 44PLCC
Embedded Microcontrollers
44-LCC (J-Lead)
89C
Obsolete
$3.93 / unit (market reference)
MOQ: 77 pcs
Submit your quantity via the inquiry form for a competitive quote within 24 hours.
Parameters
| Parameter | Value |
|---|---|
| Brand | Rochester Electronics, LLC |
| Model | AT89C51-24JI |
| Package / Case | 44-LCC (J-Lead) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C |
| Core Processor | 8051 |
| Speed | 24MHz |
| Program Memory Size | 4KB (4K x 8) |
| RAM Size | 128 x 8 |
| Number of I/O | 32 |
| Voltage - Supply | 4V ~ 6V |
| Connectivity | UART/USART |
| Supplier Device Package | 44-PLCC (16.6x16.6) |
| RoHS | RoHS |
| Part Status | Obsolete |
Application & Notes
AT89C51-24JI by Rochester Electronics, LLC is a 8051 microcontroller widely used in industrial control, motor drives, IoT devices, 3D printer mainboards, and consumer electronics. The 44-LCC (J-Lead) package fits automated SMT assembly. Operating temperature is -40°C ~ 85°C — 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 | 24MHz |
| RAM Size | 128 x 8 |
| Core Size | 8-Bit |
| Connectivity | UART/USART |
| Number of I/O | 32 |
| Core Processor | 8051 |
| Oscillator Type | Internal |
| Program Memory Size | 4KB (4K x 8) |
| Program Memory Type | FLASH |
| Voltage - Supply (Vcc/Vdd) | 4V ~ 6V |
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