AT89S52 8-bit Microcontroller, 8KB Flash, 40-pin DIP

The AT89S52-24PU is a low-power, high-performance CMOS 8-bit microcontroller from ATMEL. It leverages high-density non-volatile memory technology and is fully compatible with the industry-standard 80C51 instruction set and pin-out, making it an excellent choice for upgrading existing designs or starting new projects.

Its on-chip Flash memory allows the program to be reprogrammed in-system, offering immense flexibility for development and field updates without removing the chip. This powerful microcontroller combines a versatile 8-bit CPU with in-system programmable flash on a single chip.

Key Features

• Program Memory: 8KB of In-System Programmable (ISP) Flash with 10,000 write/erase cycle endurance.
• High Integration: Includes 32 programmable I/O lines, three 16-bit timer/counters, a full-duplex UART serial channel, and a watchdog timer.
• Flexible Clocking: Supports fully static operation from 0Hz to 33MHz (24MHz max for this variant), enabling low-power designs.
• Memory & Data: Features 256 x 8-bit of internal RAM and a dual data pointer for efficient data handling.
• Power Management: Offers software-selectable low-power idle and power-down modes, with interrupt recovery from power-down.
• Security: Includes three-level program memory lock to protect your code.

With its robust feature set, including eight interrupt sources and flexible ISP programming in byte and page modes, the AT89S52 is a highly capable core for a wide range of embedded applications.