Unlock MCU AT89C51RB2 Flash

We can Unlock MCU AT89C51RB2 Flash, please view the MCU AT89C51RB2 features for your reference:

The AT89C51RB2/RC2 is a high-performance Flash version of the 80C51 8-bit microcontrollers. It contains a 16K or 32K Bytes Flash memory block for program and data when Unlock MCU.

The Flash memory can be programmed either in parallel mode or in serial mode with the ISP capability or with software. The programming voltage is internally generated from the standard VCC pin if Unlock MCU.

The AT89C51RB2/RC2 retains all features of the 80C52 with 256 Bytes of internal RAM, a 9-source 4-level interrupt controller and three timer/counters before Unlock MCU.

In addition, the AT89C51RB2/RC2 has a Programmable Counter Array, an XRAM of 1024 Bytes, a Hardware Watchdog Timer, a Keyboard Interface, an SPI Interface, a more versatile serial channel that facilitates multiprocessor communication (EUART) and a speed improvement mechanism (X2 mode) after Unlock MCU.

The Pinout is the standard 40/44 pins of the C52. The fully static design reduces system power consumption of the AT89C51RB2/RC2 by allowing it to bring the clock frequency down to any value, even DC, without loss of data if Unlock MCU.

The AT89C51RB2/RC2 has 2 software-selectable modes of reduced activity and 8-bit clock prescaler for further reduction in power consumption. In Idle mode, the CPU is frozen while the peripherals and the interrupt system are still operating. In power-down mode, the RAM is saved and all other functions are inoperative when Unlock MCU.

The added features of the AT89C51RB2/RC2 make it more powerful for applications that need pulse width modulation, high speed I/O and counting capabilities such as alarms, motor control, corded phones, and smart card readers when Unlock MCU.

The Special Function Registers (SFRs) of the AT89C51RB2/RC2 fall into the following categories:

C51 core registers: ACC, B, DPH, DPL, PSW, SP

I/O port registers: P0, P1, P2, P3

Timer registers: T2CON, T2MOD, TCON, TH0, TH1, TH2, TMOD, TL0, TL1, TL2, RCAP2L, RCAP2H

Serial I/O port registers: SADDR, SADEN, SBUF, SCON

PCA (Programmable Counter Array) registers: CCON, CCAPMx, CL, CH, CCAPxH, CCAPxL (x: 0 to 4)

Power and clock control registers: PCON when Unlock MCU

Hardware Watchdog Timer registers: WDTRST, WDTPRG

Interrupt system registers: IEN0, IPL0, IPH0, IEN1, IPL1, IPH1

Keyboard Interface registers: KBE, KBF, KBLS


BRG (Baud Rate Generator) registers: BRL, BDRCON

Flash register: FCON

Clock Prescaler register: CKRL


To optimize the power consumption and execution time needed for a specific task, an internal, prescaler feature has been implemented between the oscillator and the CPU and peripherals after Unlock MCU.

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