Microchip Technology AT89C4051-12SI Microcontroller, Microprocessor, FPGA Modules
IC MCU 8BIT 4KB FLASH 20SOIC
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
AT89C4051-12SI
Series
Detailed Description
IC MCU 8BIT 4KB FLASH 20SOIC
Package
20-SOIC (0.295", 7.50mm Width)
Key Features
Package / Case: 20-SOIC (0.295", 7.50mm Width); Mounting Type: Surface Mount
Lifecycle Status
Obsolete
RoHS State
RoHS Compliant
Datasheet
AT89C4051-12SI Datasheet
Quick Jump:
Technical Specifications
Microchip Technology AT89C4051-12SI Microcontroller, Microprocessor, FPGA Modules technical specifications.
General
Series
89C
RAM Size
128 x 8
RoHS
True
Package / Case
20-SOIC
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 85°C (TA)
Supply Voltage
4V ~ 6V
Lifecycle Status
Obsolete
Peripherals
Brown-out Detect/Reset, LED, POR
Number of I/O
15
Alternate Parts Comparison (AT89C4051-12SI vs AT89C1051-24PC vs AT89C52-24JC vs AT89C51-24AC)
Side-by-side technical parameter comparison of related primary models in this product family.
| This Part | Alternate Parts | Alternate Parts | Alternate Parts | |
|---|---|---|---|---|
| Package / Case | 20-SOIC | -- | 44-LCC | 44-TQFP |
| Mounting Type | Surface Mount | -- | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) | -- | 0°C ~ 70°C | 0°C ~ 70°C |
| Supply Voltage | 4V ~ 6V | -- | 4V ~ 6V | 4V ~ 6V |
| Core Processor | 8051 | -- | 8051 | 8051 |
| Core Size | 8-Bit | -- | 8-Bit | 8-Bit |
| RAM Size | 128 x 8 | -- | 256 x 8 | 128 x 8 |
| Connectivity | UART/USART | -- | SIO, UART/USART | UART/USART |
| Number of I/O | 15 | -- | 32 | 32 |
| Oscillator Type | Internal | -- | Internal | Internal |
| Program Memory Size | 4KB (4K x 8) | -- | 8KB (8K x 8) | 4KB (4K x 8) |
| Program Memory Type | Flash | -- | Flash | Flash |
| 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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