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. Thedevice 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 .
Features of AT89C55WD
• Compatible with MCS®-51 Products
• 20K Bytes of Reprogrammable Flash Memory
• Endurance: 1000 Write/Erase Cycles
• 4V to 5.5V Operating Range
• Fully Static Operation: 0 Hz to 33 MHz
• 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
- 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
- Supplier’s original packaging: Tube
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