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针对PIC18F4550芯片解密等Microchip公司 PIC芯片解密，度迈科技深圳芯片解密中心在确保解密芯片绝对安全的同时，也把PIC单片机解密的周期精确到小时，使得Microchip单片机解密的可靠性和成功率极高。

芯片性能描述：

A universal serial bus characteristics :

Compatible with USB V2 0

Low-speed ( 5Mb / s ) and full-speed ( 12Mb / s )

Support for control, interrupt, isochronous and bulk displacement

To support 32 terminals ( 16- bit bi-directional)

USB - 1Kbyte dual-access RAM

With on-chip voltage regulator board USB transceiver

Off-chip USB transceiver interface

Transfer USB data stream flow parallel port ( 40/44 series applicable)

Two power management modes :

Run mode: CPU on  the periphery on

Idle mode: CPU off,  peripherals on

Sleep mode: CPU off   peripherals off

Typical low current value of the idle mode . 8uA

Low sleep mode current is typical . 1uA

TMR1 oscillation modes typical: 2V , 32KHz , 1 . 1uA

The typical value of the watchdog timer . 1uA

Two-speed crystal oscillator start

Third, flexible oscillatory structure :

Four kinds of crystal modes, including the USB - precision PLL

External clock mode, 48MHz

Internal oscillation clock:

  8 selectable frequency 31KHz ~ 8MHz

  Adjustable to compensate for frequency drift

Secondary oscillation use TMR1 in 32KHz

Dual oscillator options allow microcontroller and USB mode to run in different clock speeds

Fail-safe clock action:

  If a clock failure, allowing for safe shutdown

Fourth, peripheral highlight features :

Pull out the high / sink current capability 25mA/25mA

3 programmable external interrupt pin

4 timer mode ( TMR0 ~ TMR3 )

2 Capture / Compare / PWM module CCP

  16- bit capture a maximum resolution of 6 . 25ns ( TCY/16 )

  The 16- bit comparator, the maximum resolution of 100ns ( TCY )

  PWM output: PWM resolution is 10

Enhancements of the ECCP module (only for 40/44 , foot series)

1 , 2 or 4 channel PWM output

PWM polarity selection

PWM programmable deadtime

Automatic shutdown and automatic restart

Enhancements USART mode:

   Support for the LIN bus

Master Synchronous Serial Port MSSP of the two operating modes:

   3- wire SPI ™ (supports all four SPI modes)

   I2CTM active and slave mode

10- bit, 13 -channel A / D conversion mode with automatic acquisition function

Multiplexed dual analog input pin

Five special features:

C compiler optimization with extended instruction set architecture

Enhancements FLASH can withstand 100 , 000 erase / write operation

EEPROM can be subjected to 1 , 000 , 000 erase / write operation

FLASH / Data EEPROM data retention period of more than 40 years

Software-controlled automatic reprogrammable

Interrupt Priority

8 x 8 single-cycle hardware multiplier

Extended Watchdog Timer

  41ms ~ 131s programmable cycle

  2% stable overload VDD and temperature protection

Code protection

Pin and 5V power supply to support the serial programming ICSPTM

2 feet

Choose a dedicated ICD / ICSP port (only for 44pin series)

Wide operating voltage range 2V ~~ 5 5V

 基于PIC18F4455单片机和PIC18F4550单片机的以上特点