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The AT89S8253 is a low-power, high-performance CMOS 8-bit microcontroller with 12K bytes of In-System Programmable (ISP) Flash program memory and 2K bytes of EEPROM data memory. The device is manufactured using Atmel’s high-density nonvolatile memory technology and is compatible with the industry-standard MCS-51 instruction set and pinout. The on-chip downloadable Flash allows the program memory to be reprogrammed in-system through an SPI serial interface or by a conventional nonvolatile memory programmer. By combining a versatile 8-bit CPU with downloadable Flash on a monolithic chip, the Atmel AT89S8253 is a powerful microcontroller which provides a highly-flexible and cost-effective solution to many embedded control applications.
* Compatible with MCS®-51 Products * 12K Bytes of In-System Programmable (ISP) Flash Program Memory * 2K Bytes EEPROM Data Memory * 64-byte User Signature Array * 2.7V to 5.5V Operating Range * Fully Static Operation: 0 Hz to 24 MHz (in x1 and x2 Modes) * Three-level Program Memory Lock * 256 x 8-bit Internal RAM * 32 Programmable I/O Lines * Three 16-bit Timer/Counters * Nine Interrupt Sources * Enhanced UART Serial Port with Framing Error Detection and Automatic Address Recognition * Enhanced SPI (Double Write/Read Buffered) Serial Interface * Low-power Idle and Power-down Modes * Interrupt Recovery from Power-down Mode * Programmable Watchdog Timer * Four-level Enhanced Interrupt Controller * Programmable and Fuseable x2 Clock Option * Temperature Range: Industrial (-40° to +85°C)