Crack Microcontroller AT87F51RC Flash Program

Crack Microcontroller AT87F51RC Flash Program

Crack Microcontroller AT87F51RC Flash Program needs to know its structure of memory first:

The AT87F51RC is a low-power, high-performance CMOS 8-bit microcomputer with 32K bytes of QuickFlash one-time programmable (OTP) read only memory and 512 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-microcontroller QuickFlash allows the program memory to be user programmed by a conventional nonvolatile memory programmer. A total of 512 bytes of internal RAM are available in the AT87F51RC. The 256-byte expanded internal RAM is accessed via MOVX instructions after clearing bit 1 in the SFR located at address 8EH. The other 256-byte RAM segment is accessed the same way as the Atmel AT89-series and other 8052-compatible products.

By combining a versatile 8-bit CPU with QuickFlash on a monolithic microcontroller, the Atmel AT87F51RC is a powerful microcomputer which provides a highly-flexible and cost effective solution to many embedded control applications. The AT87F51RC provides the following standard features:

32K bytes of QuickFlash, 512 bytes of RAM, 32 I/O lines, three 16-bit timer/counters, a six-vector two-level interrupt architecture, a full duplex serial port, on-microcontroller oscillator, and clock circuitry. In addition, the AT87F51RC is designed with static logic for operation down to zero frequency and supports two software selectable power saving modes.

The Idle Mode stops the CPU while allowing the RAM, timer/counters, serial port, and interrupt system to continue functioning. The Power-down mode saves the RAM contents but freezes the oscillator, disabling all other microcontroller functions until the next external interrupt or hardware reset.
VCC
Supply voltage.
GND
Ground.
Port 0
Port 0 is an 8-bit open drain bidirectional I/O port. As an output port, each pin can sink eight TTL inputs. When 1s are written to port 0 pins, the pins can be used as high impedance inputs. Port 0 can also be configured to be the multiplexed low order address/data bus during accesses to external program and data memory. In this mode, P0 has internal pullups from Crack Microcontroller AT87F51RC Flash Program.

Port 0 also receives the flash program bytes during QuickFlash programming and outputs the flash program bytes during program verification. External pullups are required during program verification.