Microchip Technology AT89C51-33AI Microcontroller, Microprocessor, FPGA Modules
IC MCU 8BIT 4KB FLASH 44TQFP
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
AT89C51-33AI
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
AT89C51-33AI Datasheet
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Technical Specifications
Microchip Technology AT89C51-33AI 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
-40°C ~ 85°C (TA)
Supply Voltage
4V ~ 6V
Lifecycle Status
Obsolete
Number of I/O
32
Speed
33MHz
Related Parts Comparison (AT89C51-33AI vs AT89C1051-24PC vs AT89C51CC03CA-RDTUM vs AT89C51CC02CA-TISUM)
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 | -- | 64-LQFP | 28-SOIC |
| Mounting Type | Surface Mount | -- | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) | -- | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Supply Voltage | 4V ~ 6V | -- | 3V ~ 5.5V | 3V ~ 5.5V |
| Core Processor | 80C51 | -- | 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
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IC MCU 8BIT 4KB FLASH 20TSSOP
MC9S08AC8CFGENXP SemiconductorsNXP
IC MCU 8BIT 8KB FLASH 44LQFP
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