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AT87F55 Description
The AT87F55WD is a low-power, high-performance CMOS 8-bit microcomputer with 20K bytes of QuickFlash one-time programmable (OTP) 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 QuickFlash allows the program memory to be user programmed by a conventional nonvolatile memory programmer. By combining a versatile 8-bit CPU with QuickFlash on a monolithic chip, the Atmel AT87F55WD is a powerful microcomputer which provides a highly-flexible and cost-effective solution to many embedded control applications.
AT87F55 Features
Compatible with MCS-51? Products
20K Bytes of One-time Programmable QuickFlash Memory
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
