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ATTINY15单片机二次开发技术

时间:2011-04-14 09:07:21

芯片解密过程中,解密工程师必须掌握对芯片内部结构及解密特征进行技术分析,因为只有充分了解芯片内部结构原理,工程师才能准确进行方案开发,确定最可靠、成功率最高的解密方案,最大限度确保解密项目的安全可靠。
ATTINY15单片机特点:
·High-performance, Low-power AVR 8-bit Microcontroller
·Advanced RISC Architecture
– 90 Powerful Instructions – Most Single Clock Cycle Execution
– 32 x 8 General Purpose Working Registers
– Fully Static Operation
·Nonvolatile Program and Data Memories
– 1K Byte In-System Programmable Flash Program Memory
Endurance: 1,000 Write/Erase Cycles
– 64 Bytes EEPROM
Endurance: 100,000 Write/Erase Cycles
– Programming Lock for Flash Program Data Security
·Peripheral Features
– Interrupt and Wake-up on Pin Change
– Two 8-bit Timer/Counters with Separate Prescalers
– One 150 kHz, 8-bit High-speed PWM Output
– 4-channel 10-bit ADC
One Differential Voltage Input with Optional Gain of 20x
– On-chip Analog Comparator
– Programmable Watchdog Timer with On-chip Oscillator
·Special Microcontroller Features
– In-System Programmable via SPI Port
– Enhanced Power-on Reset Circuit
– Programmable Brown-out Detection Circuit
– Internal, Calibrated 1.6 MHz Tunable Oscillator
– Internal 25.6 MHz Clock Generator for Timer/Counter
– External and Internal Interrupt Sources
– Low-power Idle and Power-down Modes
·Power Consumption at 1.6 MHz, 3V, 25°C
– Active: 3.0 mA
– Idle Mode: 1.0 mA
– Power-down: < 1 ?A
·I/O and Packages
– 8-lead PDIP and 8-lead SOIC: 6 Programmable I/O Lines
·Operating Voltages
– 2.7V - 5.5V
·Internal 1.6 MHz System Clock
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