Break IC, Recover MCU, Microcontroller Reverse Engineering

Archive for September, 2010

Break IC ATmega640V and readout the embedded firmware from mcu atmega640v Flash memory and eeprom memory, the protective system of microcontroller atmega640v will be cracked to get access to flash and eeprom memory;

The ATmega640V is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATmega640V achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.

The AVR core combines a rich instruction set with 32 general purpose working registers. All the 32 registers are directly connected to the Arithmetic Logic Unit (ALU), allowing two independent registers to be accessed in one single instruction executed in one clock cycle.

T5he resulting architecture is more code efficient while achieving throughputs up to ten times faster than conventional CISC microcontrollers before attack microcontroller mc68hc705p6.

The ATmega640V provides the following features: 64K/128K/256K bytes of In-System Programmable Flash with Break-While-Write capabilities, 4K bytes EEPROM, 8K bytes SRAM, 54/86 general purpose I/O lines, 32 general purpose working registers, Real Time Counter (RTC), six flexible Timer/Counters with compare modes and PWM, 4 USARTs, a byte oriented 2-wire Serial Interface, a 16-channel, 10-bit ADC with optional differential input stage with programmable gain, programmable Watchdog Timer with Internal Oscillator, an SPI serial port, IEEE std. 1149.1 compliant JTAG test interface, also used for accessing the On-IC Debug system and programming and six software selectable power saving modes.

The Idle mode stops the CPU while allowing the SRAM, Timer/Counters, SPI port, and interrupt system to continue functioning. The Power-down mode saves the register contents but freezes the Oscillator, disabling all other IC functions until the next interrupt or Hardware Reset when copy pic16lf877 mcu program.

In Power save mode, the asynchronous timer continues to run, allowing the user to maintain a timer base while the rest of the device is sleeping. The ADC Noise Reduction mode stops the CPU and all I/O modules except Asynchronous Timer and ADC, to minimize switching noise during ADC conversions.

In Standby mode, the Crystal/Resonator Oscillator is running while the rest of the device is sleeping. This allows very fast start-up combined with low power consumption. In Extended Standby mode, both the main Oscillator and the Asynchronous Timer continue to run.

The device is manufactured using Atmel’s high-density nonvolatile memory technology. The On-IC ISP Flash allows the program memory to be reprogrammed in-system through an SPI serial interface, by a conventional nonvolatile memory programmer, or by an On-IC Boot program running on the AVR core when Break IC.

The boot program can use any interface to download the application program in the application Flash memory. Software in the Boot Flash section will continue to run while the Application Flash section is updated, providing true Break-While-Write operation.

By combining an 8-bit RISC CPU with In-System Self-Programmable Flash on a monolithic IC, the Atmel ATmega640V is a powerful microcontroller that provides a highly flexible and cost effective solution to many embedded control applications.

The ATmega640V AVR is supported with a full suite of program and system development tools including: C compilers, macro assemblers, program debugger/simulators, in-circuit emulators, and evaluation kits.

Reverse Engineering Microcontroller ATmega640 and readout the embedded content from mcu atmega640, atmega640 mcu protection can be unlocked by focus ion beam;

Features

High Performance, Low Power AVR® 8-Bit Microcontroller

Advanced RISC Architecture

– 135 Powerful Instructions – Most Single Clock Cycle Execution when copy pic18f252 Microcontroller

– 32 x 8 General Purpose Working Registers

– Fully Static Operation

– Up to 16 MIPS Throughput at 16 MHz

– On-Chip 2-cycle Multiplier

High Endurance Non-volatile Memory Segments

– 64K/128K/256K Bytes of In-System Self-Programmable Flash

– 4K Bytes EEPROM

– 8K Bytes Internal SRAM

– Write/Erase Cycles:10,000 Flash/100,000 EEPROM

– Data retention: 20 years at 85°C/ 100 years at 25°C

– Optional Boot Code Section with Independent Lock Bits after recover dspic30f6013a Microcontroller

In-System Programming by On-chip Boot Program

True Reverse engineering-While-Write Operation

– Programming Lock for Software Security

Endurance: Up to 64K Bytes Optional External Memory Space

JTAG (IEEE std. 1149.1 compliant) Interface

– Boundary-scan Capabilities According to the JTAG Standard

– Extensive On-chip Debug Support

– Programming of Flash, EEPROM, Fuses, and Lock Bits through the JTAG Interface

Peripheral Features

– Two 8-bit Timer/Counters with Separate Prescaler and Compare Mode

– Four 16-bit Timer/Counter with Separate Prescaler, Compare- and Capture Mode

– Real Time Counter with Separate Oscillator

– Four 8-bit PWM Channels

– Six/Twelve PWM Channels with Programmable Resolution from 2 to 16 Bits

(ATmega1281/2561, ATmega640/1280/2560)

– Output Compare Modulator

– 8/16-channel, 10-bit ADC (ATmega1281/2561, ATmega640/1280/2560) after Reverse engineering Microcontroller

– Two/Four Programmable Serial USART (ATmega1281/2561,ATmega640/1280/2560)

– Master/Slave SPI Serial Interface

– Byte Oriented 2-wire Serial Interface

– Programmable Watchdog Timer with Separate On-chip Oscillator

– On-chip Analog Comparator

– Interrupt and Wake-up on Pin Change

Special Microcontroller Features

– Power-on Reset and Programmable Brown-out Detection

– Internal Calibrated Oscillator

– External and Internal Interrupt Sources

– Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby, and Extended Standby I/O and Packages

– 54/86 Programmable I/O Lines (ATmega1281/2561, ATmega640/1280/2560)

– 64-pad QFN/MLF, 64-lead TQFP (ATmega1281/2561)

– 100-lead TQFP, 100-ball CBGA (ATmega640/1280/2560)

– RoHS/Fully Green

Temperature Range:

– -40°C to 85°C Industrial

Ultra-Low Power Consumption

– Active Mode: 1 MHz, 1.8V: 500 µA

– Power-down Mode: 0.1 µA at 1.8V

Speed Grade:

– ATmega640V/ATmega1280V/ATmega1281V:

0 – 4 MHz @ 1.8 – 5.5V, 0 – 8 MHz @ 2.7 – 5.5V

– ATmega2560V/ATmega2561V:

0 – 2 MHz @ 1.8 – 5.5V, 0 – 8 MHz @ 2.7 – 5.5V

– ATmega640/ATmega1280/ATmega1281:

0 – 8 MHz @ 2.7 – 5.5V, 0 – 16 MHz @ 4.5 – 5.5V

– ATmega2560/ATmega2561:

0 – 16 MHz @ 4.5 – 5.5V

Recover MCU ATtiny861V Flash program and eeprom data, crack microcontroller attiny861v protective system and read the firmware out from embedded processor attiny861v memory;

A map of the on-chip memory area called the Special Function Register (SFR) space is shown in Table 1.

Note that not all of the addresses are occupied, and unoccupied addresses may not be implemented on the chip. Recover accesses to these addresses will in general return random data, and write accesses will have an indeterminate effect if attack pic18lf4520 MCU.

User software should not write 1s to these unlisted locations, since they may be used in future products to invoke new features. In that case, the reset or inactive values of the new bits will always be 0.

Timer 2 Registers: Control and status bits are contained in registers T2CON (shown in Table 2) and T2MOD (shown in Table ) for Timer 2. The register pair (RCAP2H, RCAP2L) are the Capture/Reload registers for Timer 2 in 16-bit capture mode or 16-bit auto-reload mode.

Interrupt Registers: The individual interrupt enable bits are in the IE register. Two priorities can be set for each of the six interrupt sources in the IP register.

Table 2. T2CON – Timer/Counter 2 Control Register

MCS-51 devices have a separate address space for Program and Data Memory. Up to 64K bytes each of external Program and Data Memory can be addressed.

If the EA pin is connected to GND, all program fetches are directed to external memory. On the AT89LS52, if EA is connected to VCC, program fetches to addresses 0000H through 1FFFH are directed to internal memory and fetches to addresses 2000H through FFFFH are directed to external memory when copy pic18f458 MCU binary.

The AT89LS52 implements 256 bytes of on-chip RAM. The upper 128 bytes occupy a parallel address space to the Special Function Registers. This means that the upper 128 bytes have the same addresses as the SFR space but are physically separate from SFR space.

When an instruction accesses an internal location above address 7FH, the address mode used in the instruction specifies whether the CPU accesses the upper 128 bytes of RAM or the SFR space. Instructions which use direct addressing access of the SFR space.

For example, the following direct addressing instruction accesses the SFR at location 0A0H (which is P2). MOV 0A0H, #data Instructions that use indirect addressing access the upper 128 bytes of RAM. For example, the following indirect addressing instruction, where R0 contains 0A0H, accesses the data byte at address 0A0H, rather than P2 (whose address is 0A0H) after Recover MCU.

MOV @R0, #data Note that stack operations are examples of indirect addressing, so the upper 128 bytes of data RAM are available as stack space.

Recover MCU ATtiny861 Software from opened microcontroller attiny861 after crack it, and then read the firmware out from program and eeprom memory of microprocessor attiny861.