
AT89C2051-24PI
8051-compatible 8-bit microcontroller with 2 KB Flash
Key details
| Part Number | AT89C2051-24PI |
|---|---|
| Manufacturer | Microchip Technology |
| Category | 8-bit Microcontroller |
| Lifecycle Status | Obsolete |
| Series | AT89C2051 |
| Package / Case | 20-lead PDIP |
| Pin Count | 20 |
| Operating Temperature | -40°C to +85°C |
| Last Verified | 2026-07-18 |
Part information
AT89C2051-24PI Overview
AT89C2051-24PI is a Microchip Technology 8051-compatible 8-bit microcontroller with 2 KB Flash supplied in 20-lead PDIP. This page uses the exact orderable code because package, grade, temperature and option suffixes can change compatibility.
Key Technical Specifications
| Core | 8051-compatible 8 bit |
|---|---|
| Program Memory | 2 KB Flash |
| Maximum Clock | 24 MHz |
| I/O Lines | 15 |
| Supply Voltage | 2.7 V to 6 V family range |
Package and Ordering Notes
The listed package is 20-lead PDIP with 20 pins, leads, lands or contacts. The featured image is a generic package illustration for form-factor identification and is not an actual date-code or lot photograph. Lifecycle is recorded as Obsolete; confirm current factory support and last-time-buy constraints before design-in.
Sourcing Guidance
AT89C2051-24PI is a legacy or obsolete orderable code. Source only with date-code, label, package and traceability checks appropriate to the application.
For an accurate quotation, include the full MPN, target quantity, acceptable date-code range, packaging format and destination. Icearth can help review traceability documents, label photos and electrical/package alignment before order placement.
Manufacturer Documentation
Technical values were checked against Microchip Technology documentation. Use the linked datasheet as the controlling source and re-check revisions before PCB release or firmware qualification.
Related part numbers
These published records are the closest catalog references to AT89C2051-24PI by manufacturer, product category, series or package. Confirm electrical ratings, pinout and ordering suffixes before substitution.
- AT89C51CC01UA-RLTUM — 8051-compatible 8-bit microcontroller with integrated CAN controller and UART bootloader Related by the same manufacturer and the same component category.
- AT89C51RC2-RLTUM — high-performance 8051-compatible 8-bit microcontroller with 32 KB Flash Related by the same manufacturer and the same component category.
- BHI260AP — programmable smart sensor hub with 32-bit MCU, 6-axis IMU and self-learning AI software Related by the same microcontroller product group.
- CY7C68013A-100AXC — high-speed USB 2.0 peripheral controller with enhanced 8051 core and 16 KB internal RAM Related by the same microcontroller product group.
Lifecycle and sourcing review
This part has a legacy lifecycle status. Submit the exact MPN, quantity, delivery destination and date-code requirements for a sourcing review.
AT89C2051-24PI is a legacy or obsolete orderable code. Source only with date-code, label, package and traceability checks appropriate to the application.