AT89S8253-24AI

Microcontrollers Overview

The AT89S8253-24AI is an 8-bit microcontroller based on the MCS-51 architecture, manufactured by Microchip Technology. It features 12K bytes of In-System Programmable (ISP) Flash program memory and 2K bytes of EEPROM data memory. The device includes 256 bytes of internal RAM and 32 programmable I/O lines. It supports a fully static operation with a maximum clock frequency of 24 MHz. Connectivity options include an enhanced UART serial port and an enhanced SPI interface. The component operates within a voltage range of 2.7V to 5.5V and is available in a 44-pin TQFP package.

Microcontrollers Feature Summary

• Features 12K bytes of ISP Flash program memory accessible via SPI for in-system reprogramming.
• Includes 2K bytes of EEPROM data memory with auto-erase capability at the byte level.
• Provides three 16-bit timer/counters and a nine-interrupt source architecture.
• Supports low-power Idle and Power-down modes with interrupt recovery capabilities.

Microcontrollers Applications

• Embedded control systems requiring non-volatile data storage
• Industrial monitoring devices utilizing serial communication interfaces
• Cost-effective solutions for general-purpose microcontroller applications

Microcontrollers Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to confirm package type and temperature rating. Ensure compatibility with existing PCB footprints for the designated package variant. Confirm that the supply voltage and clock frequency requirements align with the system design specifications before procurement.

Microcontrollers Selection Notes

Select this component when an MCS-51 compatible architecture with integrated Flash and EEPROM is required. Consider the 24 MHz maximum speed and 32 I/O lines for complex peripheral interfacing. Evaluate the power consumption characteristics if battery-operated or low-power idle modes are critical to the application design.

Microcontrollers Part Context

This part belongs to the AT89S8253 series of 8-bit microcontrollers. It is designed as a high-performance, low-power CMOS device. The series maintains compatibility with industry-standard MCS-51 instruction sets and pinouts, facilitating migration from legacy designs while offering modern in-system programming capabilities.

Microcontrollers Replacement Considerations

The AT89LS8252 is documented as a predecessor not recommended for new designs, with the AT89S8253 specified as the replacement. Verify electrical and pinout compatibility when substituting components from different manufacturers or generations.