The Atmel AT89S8252 is a high-performance CMOS 8-bit microcontroller with 8K bytes of in-system programmable Flash memory and 2K bytes of EEPROM. It's built on the 8051 core, offering compatibility and ease of use for developers familiar with this architecture. The EEPROM provides data storage that persists even when power is removed, making it suitable for applications requiring non-volatile memory. The device is manufactured using Atmel's high-density nonvolatile memory technology.

Applications

• Smart card readers
• Data logging systems
• Industrial control systems
• Security systems
• Metering devices

Features

• Compatible with MCS-51 Products
• 8K Bytes of In-System Programmable (ISP) Flash Memory
• 2K Bytes of EEPROM
• Endurance: 10,000 Write/Erase Cycles for EEPROM, 1,000 for Flash
• 4.0V to 5.5V Operating Range
• Fully Static Operation: 0 Hz to 33 MHz
• Three-level Program Memory Lock
• 256 x 8-bit Internal RAM
• 32 Programmable I/O Lines
• Three 16-bit Timer/Counters
• Nine Interrupt Sources
• Programmable UART Serial Channel
• Watchdog Timer
• Power-down Mode Improves Power Savings

Benefits

• Non-volatile Data Storage: The integrated EEPROM allows storing configuration data, parameters, or other information that needs to be retained when power is off.
• Flexible: Offers a combination of Flash and EEPROM memory types.
• High Performance: Operates at up to 33 MHz, enabling faster processing.
• Easy to Program: Based on the familiar 8051 architecture.
• In-System Programmability: Facilitates easy firmware updates and data modification.

Additional Details

The AT89S8252 typically operates from 4.0V to 5.5V, with a maximum operating frequency of 33 MHz. It's commonly packaged in 40-pin PDIP, PLCC, or TQFP packages. It includes a Watchdog Timer for improved system reliability. The device is now end-of-life.