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AT89C51AC3芯片功能分析与解密

时间:2011-01-04 09:24:59

有关AT89C51AC3芯片解密,他的一些基本的特征需要我们去了解。在单片机解密、IC解密过程中,不同的技术手法可能产生的解密解密就不同,而解密手法的选择除了考虑解密者本身的技术经验外,还应该对需解密的单片机有一定的了解。公司采用目前国际上最先进的技术与设备,专业的IC解密程序流程竭诚为国内外广大客户提供专业IC解密服务。诚挚欢迎您来电咨询,期待与您携手合作。
The AT89C51AC3 is a high performance Flash version of the 80C51 single chip 8-bit microcontrollers. In X2 mode a maximum external clock rate of 20 MHz reaches a 300 ns cycle time.Besides the AT89C51AC3 provides 64K Bytes of Flash memory including In-System Programming (ISP) and IAP, 2K Bytes Boot Flash Memory, 2K Bytes EEPROM and 2048 byte ERAM.Primary attention is paid to the reduction of the electro-magnetic emission of
AT89C51AC3.
Features
· 80C51 Core Architecture
· 256 Bytes of On-chip RAM
· 2048 Bytes of On-chip ERAM
· 64K Bytes of On-chip Flash Memory
– Data Retention: 10 Years at 85°C
– Read/Write Cycle: 100K
· Boot Code Section with Independent Lock Bits
· 2K Bytes of On-chip Flash for Bootloader
· In-System Programming by On-Chip UART Boot Program and IAP Capability
· 2K Bytes of On-chip EEPROM
Read/Write Cycle: 100K
· Integrated Power Monitor (POR: PFD) To Supervise Internal Power Supply
· 14-sources 4-level Interrupts
· Three 16-bit Timers/Counters
· Full Duplex UART Compatible 80C51
· High-speed Architecture
– In Standard Mode:
40 MHz (Vcc 3V to 5.5V, both Internal and external code execution)
60 MHz (Vcc 4.5V to 5.5V and Internal Code execution only)
– In X2 mode (6 Clocks/machine cycle)
20 MHz (Vcc 3V to 5.5V, both Internal and external code execution)
30 MHz (Vcc 4.5V to 5.5V and Internal Code execution only)
· Five Ports: 32 + 4 Digital I/O Lines
· Five-channel 16-bit PCA with
– PWM (8-bit)
– High-speed Output
– Timer and Edge Capture
· Double Data Pointer
· 21-bit WatchDog Timer (7 Programmable Bits)
· A 10-bit Resolution Analog to Digital Converter (ADC) with 8 Multiplexed Inputs
· SPI Interface (PLCC52 and VPFP64 packages only)
· On-chip Emulation Logic (Enhanced Hook System)
· Power Saving Modes
–Idle Mode
– Power-down Mode
· Power Supply: 3 volts to 5.5 volts
· Temperature Range: Industrial (-40° to +85°C)
· Packages: VQFP44, PLCC44, VQFP64, PLCC52
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