MCHPAT89S52-24JU
Overview
The AT89S52-24JU is a low-power, high-performance 8-bit microcontroller based on the classic 8051 architecture. It features 8KB of In-System Programmable (ISP) Flash memory and 256 bytes of internal RAM, operating between 4.0V and 5.5V. Its fully static design and compatibility with the industry-standard MCS-51 instruction set make it a reliable choice for legacy systems and standard control applications.
Why Choose This Part
The primary advantage is the In-System Programmable Flash, which allows the device to be programmed while installed in the end-system. It includes a built-in Watchdog Timer for increased system reliability and dual data pointers to accelerate memory access. The wide 4.0V to 5.5V operating range ensures compatibility with standard 5V digital logic levels.
Applications
Key Specifications
Getting Started
To begin development, use a standard 8051 compiler such as Keil C51 or SDCC. Hardware programming can be performed via the Serial Peripheral Interface (SPI) using a dedicated ISP programmer. For prototyping, the 44-lead PLCC package (JU) is typically used with a PLCC socket on a PCB or through a PLCC-to-DIP adapter.
AT89S52-24 Family
Comparing specs that differ across variants. The current part is highlighted.
| Part Number | Package | Stock |
|---|---|---|
| AT89S52-24JU (this part) | LCC-44 | 755 |
| AT89S52-24PU | DIP-40 | 4,266 |
| AT89S52-24AU | TQFP-44 | 4,077 |
