ATMEL 8-Bit Microcontroller, AT89S8253-24PU, DIP40, 12KB Flash

The ATMEL AT89S8253-24PU is a high-performance 8-bit CMOS microcontroller featuring a versatile 8-bit CPU integrated with In-System Programmable (ISP) flash memory on a single chip. This powerful component is manufactured using Atmel's advanced high-density non-volatile memory technology, offering a highly flexible and cost-effective solution for a wide array of embedded control applications.

It boasts 12KB of ISP flash program memory and 2KB of EEPROM data memory, allowing for easy in-system reprogramming via an SPI serial interface. Compatible with the industry-standard MCS-51 instruction set and pinout, it ensures seamless integration into existing designs and simplifies development.

Key Features & Specifications

• Core & Memory: An 8051-compatible 8-bit CPU with 12KB flash, 2KB EEPROM, and 256 bytes of internal RAM.
• Programming & Security: Supports flexible ISP programming in byte and page mode and features a three-level program memory lock for code protection.
• Connectivity: Offers 32 programmable I/O lines, an enhanced UART with framing error detection, and a double-buffered SPI serial interface.
• Timing & Control: Includes three 16-bit timers/counters, a programmable watchdog timer, and a dual data pointer.
• Power Management: Features low-power idle and power-down modes, with interrupt recovery from power-down to optimise energy efficiency.
• Clock & Reset: Provides a programmable and fuse-able x2 clock option and an internal power-on reset circuit.
• Interrupts: A four-level enhanced interrupt controller handles nine interrupt sources for responsive system performance.

With its robust feature set, including a wide operating voltage (2.7V to 5.5V) and temperature range (-40°C to 85°C), this microcontroller is engineered for reliability in demanding environments.