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.

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

• 4.0V 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