Microchip Technology AT89S51-24AU Microcontroller, Microprocessor, FPGA Modules
IC MCU 8BIT 4KB FLASH 44TQFP
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
AT89S51-24AU
Detailed Description
IC MCU 8BIT 4KB FLASH 44TQFP
Package
44-TQFP
Key Features
Package / Case: 44-TQFP; Mounting Type: Surface Mount
Lifecycle Status
Active
RoHS State
RoHS Compliant
Datasheet
AT89S51-24AU Datasheet
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Technical Specifications
Microchip Technology AT89S51-24AU Microcontroller, Microprocessor, FPGA Modules technical specifications.
General
RAM Size
128 x 8
RoHS
Yes
Number of Pins
44
Package / Case
44-TQFP
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 85°C (TA)
Supply Voltage
4V ~ 5.5V
Lifecycle Status
Active
Peripherals
WDT
Number of I/O
32
Related Parts Comparison (AT89S51-24AU vs AT89S8253-24AU vs ATXMEGA32A4-AUR vs PIC16F1789T-I/PT)
Side-by-side specifications of related catalog parts.
Engineering verification required. Related parts may have different electrical ratings, pinouts, footprints, and operating limits. Verify suitability for your circuit before substitution.
| This Part | Related Part | Related Part | Related Part | |
|---|---|---|---|---|
| Package / Case | 44-TQFP | 44-TQFP | 44-TQFP | 44-TQFP |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Supply Voltage | 4V ~ 5.5V | 2.7V ~ 5.5V | 1.6V ~ 3.6V | 2.3V ~ 5.5V |
| Core Processor | 8051 | 8051 | AVR | PIC |
| Core Size | 8-Bit | 8-Bit | 8/16-Bit | 8-Bit |
| RAM Size | 128 x 8 | 256 x 8 | 4K x 8 | 2K x 8 |
| RoHS | Yes | Yes | Yes | Yes |
| Lifecycle Status | Active | Active | Active | Active |
| Connectivity | UART/USART | SPI, UART/USART | I²C, IrDA, SPI, UART/USART | I²C, LINbus, SPI, UART/USART |
| Number of I/O | 32 | 32 | 34 | 35 |
| Oscillator Type | Internal | External | Internal | Internal |
| Action |
Cross Reference
Manufacturer-stated alternates from official cross-reference tools. These are not a guaranteed pin-compatible drop-in. Qualify package, pinout, and electrical limits against the datasheet before a board change. See cross-reference vs drop-in compatible .
Suggested replacements
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MC9S08SU8VFKNXP SemiconductorsNXP
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