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世纪芯破解PIC18F24芯片详情

时间:2011-02-08 01:41:01

单片机解密过程中,对芯片内部结构及其加解密特征进行技术分析是解密工程师的一项必修课,因为只有充分理解单片机内部结构原理等技术信息,工程师才能准确进行方案开发,确定最可靠、成功率最高的芯片解密方案,最大限度确保解密项目的安全可靠
PIC18F24芯片特点:
High-Performance RISC CPU:
·Linear program memory addressing up to 2Mbytes
·Linear data memory addressing to 4Kbytes
·Up to 10MIPS operation
·DC ¨C 40MHz clock inpu
·4MHz-10MHz oscillator/clock input with PLL active
·16-bit wide instructions, 8-bit wide data path
·Priority levels for interrupts
·8 x 8 Single-Cycle Hardware Multiplier
Peripheral Features:
·High current sink/source 25mA/25mA
·Three external interrupt pins
·Timer0 module: 8-bit/16-bit timer/counter with
8-bit programmable prescaler
·Timer1 module: 16-bit timer/counter
·Timer2 module: 8-bit timer/counter with 8-bit
period register (time base for PWM)
·Timer3 module: 16-bit timer/counter
·Secondary oscillator clock option ¨C Timer1/Timer
·Capture/Compare/PWM (CCP) modules;
CCP pins can be configured as:
-Capture input: 16-bit, max resolution 6.25ns
-Compare: 16-bit, max resolution 100ns (TCY)
-PWM output: PWM resolution is 1 to 10-bit
Max. PWM freq. @:8-bit resolution = 156kHz
10-bit resolution = 39kHz
·Enhanced CCP module which has all the features of the standard CCP module, but also has the
following features for advanced motor control:
-1, 2 or 4 PWM outputs
-Selectable PWM polarity
-Programmable PWM dead time
·Master Synchronous Serial Port (MSSP) with two modes of operation:
-3-wire SPI (Supports all 4 SPI modes)
2-IC· Master and SlavAddressable USART module:
-Supports interrupt-on-address bit
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