Description
●The AT89C55WD is a low-power, high-performance CMOS 8-bit microcontroller with 20K bytes of Flash programmable read only memory and 256 bytes of RAM. The device is manufactured using Atmel’s high-density nonvolatile memory technology and is compatible with the industry standard 80C51 and 80C52 instruction set and pinout. The on-chip Flash allows the program memory to be user programmed by a conventional nonvolatile memory programmer. By combining a versatile 8-bit CPU with Flash on a monolithic chip, the Atmel AT89C55WD is a powerful microcomputer which provides a highly flexible and cost effective solution to many embedded control applications.
●Features
●• Compatible with MCS®-51 Products
●• 20K Bytes of Reprogrammable Flash Memory
●• Endurance: 1000 Write/Erase Cycles
●• 4V to 5.5V Operating Range
●• FullyStaticOperation:0Hzto33MHz
●• Three-level Program Memory Lock
●• 256 x 8-bit Internal RAM
●• 32 Programmable I/O Lines
●• Three 16-bit Timer/Counters
●• Eight Interrupt Sources
●• Programmable Serial Channel
●• Low-power Idle and Power-down Modes
●• Interrupt Recovery from Power-down Mode
●• Hardware Watchdog Timer
●• Dual Data Pointer
●• Power-off Flag
