High Performance 8 bit Microcontroller with 12K Bytes Flash AT89S53-24PC

8-bit Microcontroller with 12K Bytes Flash

Features

• Compatible with MCS-51™ Products

• 12K Bytes of In-System Reprogrammable Downloadable Flash Memory

– SPI Serial Interface for Program Downloading

– Endurance: 1,000 Write/Erase Cycles

• 4V to 6V Operating Range

• Fully Static Operation: 0 Hz to 24 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

• SPI Serial Interface

• Low-power Idle and Power-down Modes

• Interrupt Recovery From Power-down

• Programmable Watchdog Timer

• Dual Data Pointer

• Power-off Flag

Description

The AT89S53 is a low-power, high-performance CMOS 8-bit microcomputer with 12K bytes of downloadable Flash programmable and erasable read only memory. The device is manufactured using Atmel’s high-density nonvolatile memory technology and is compatible with the industry-standard 80C51 instruction set and pinout. The onchip 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 AT89S53 is a powerful microcomputer which provides a highly-flexible and cost-effective solution to many embedded control applications.

Timer 2 Auto Reload Mode (DCEN = 1)

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