Microchip Technology AT89C51-24AC Microcontroller, Microprocessor, FPGA Modules
IC MCU 8BIT 4KB FLASH 44TQFP
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
AT89C51-24AC
Series
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
AT89C51-24AC Datasheet
Quick Jump:
Technical Specifications
Microchip Technology AT89C51-24AC Microcontroller, Microprocessor, FPGA Modules technical specifications.
General
Series
89C
RAM Size
128 x 8
RoHS
Yes
Package / Case
44-TQFP
Mounting Type
Surface Mount
Operating Temperature
0°C ~ 70°C
Supply Voltage
4V ~ 6V
Lifecycle Status
Obsolete
Number of I/O
32
Speed
24MHz
Alternate Parts Comparison (AT89C51-24AC vs AT89C1051-24PC vs AT89C51CC03CA-RDTUM vs AT89C51CC02CA-TISUM)
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 | -- | 64-LQFP | 28-SOIC |
| Mounting Type | Surface Mount | -- | Surface Mount | Surface Mount |
| Operating Temperature | 0°C ~ 70°C | -- | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Supply Voltage | 4V ~ 6V | -- | 3V ~ 5.5V | 3V ~ 5.5V |
| Core Processor | 8051 | -- | 80C51 | 80C51 |
| Core Size | 8-Bit | -- | 8-Bit | 8-Bit |
| RAM Size | 128 x 8 | -- | 2.25K x 8 | 512 x 8 |
| Lifecycle Status | Obsolete | -- | Active | Active |
| Connectivity | UART/USART | -- | CANbus, SPI, UART/USART | CANbus, UART/USART |
| Number of I/O | 32 | -- | 36 | 20 |
| Oscillator Type | Internal | -- | External | External |
| Program Memory Size | 4KB (4K x 8) | -- | 64KB (64K x 8) | 16KB (16K x 8) |
| 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
MC9S08SF4MTJNXP SemiconductorsNXP
IC MCU 8BIT 4KB FLASH 20TSSOP
MC9S08SU8VFKNXP SemiconductorsNXP
IC MCU 8BIT 8KB FLASH 24QFN
More Parts in Microcontrollers
Browse additional parts from the same category, grouped by series, package type, and manufacturer. These are catalog suggestions — not verified pin-compatible alternates.
