Microchip Technology AT89S51-24AI Microcontroller, Microprocessor, FPGA Modules
IC MCU 8BIT 4KB FLASH 44TQFP
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
AT89S51-24AI
Detailed Description
IC MCU 8BIT 4KB FLASH 44TQFP
Package
44-TQFP
Key Features
Package / Case: 44-TQFP; Mounting Type: Surface Mount
Lifecycle Status
Obsolete
RoHS State
RoHS Compliant
Datasheet
AT89S51-24AI Datasheet
Quick Jump:
Technical Specifications
Microchip Technology AT89S51-24AI Microcontroller, Microprocessor, FPGA Modules technical specifications.
General
Series
89S
RAM Size
128 x 8
Data Bus Width
8 bit
Maximum Clock Frequency
33 MHz
RoHS
True
Package / Case
44-TQFP
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 85°C (TA)
Supply Voltage
4V ~ 5.5V
Lifecycle Status
Obsolete
Alternate Parts Comparison (AT89S51-24AI vs AT89S8253-24AU vs ATXMEGA32A4-AUR vs PIC16F1789T-I/PT)
Side-by-side technical parameter comparison of related primary models in this product family.
| This Part | Alternate Parts | Alternate Parts | Alternate Parts | |
|---|---|---|---|---|
| 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 |
| 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 |
| Peripherals | WDT | POR, WDT | Brown-out Detect/Reset, DMA, POR, PWM, WDT | Brown-out Detect/Reset, POR, PSMC, PWM, WDT |
| Program Memory Size | 4KB (4K x 8) | 12KB (12K x 8) | 32KB (16K x 16) | 28KB (16K x 14) |
| 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
IC MCU 8BIT 8KB FLASH 24QFN
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