AT89C55WD-24JU Datasheet PDF - Microchip

The AT89C55WD-24JU is a low-power, high-performance 8-bit CMOS Microcontroller with 20kB of flash programmable read only memory and 256byte of RAM. The device is manufactured using high-density nonvolatile memory technology and is compatible with the industry standard 80C51 and 80C52 instruction set and pin out. 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 AT89C55WD is a powerful microcomputer which provides a highly flexible solution.

● Compatible with MCS®51 products

● 10,000 Write/Erase cycles Endurance

● 0 to 33MHz Fully static operation

● Three-level program memory lock

● 32 Programmable I/O lines

● Three 16-bit timers/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