我搞个小制作,需要找一款便宜的单片机,最好有片内EEPROM,没有其他要求了,帮忙推荐一款吧,市场价是多少?
最佳答案 - 由投票者9个月前选出
8-bit Flash
Microcontroller
AT89C51ID2
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Features
? 80C52 Compatible
– 8051 Instruction Compatible
– Six 8-bit I/O Ports (64 pins or 68 Pins Versions)
– Four 8-bit I/O Ports (44 Pins Version)
– Three 16-bit Timer/Counters
– 256 bytes Scratch Pad RAM
– 10 Interrupt Sources With 4 Priority Levels
? ISP (In-System Programming) Using Standard VCC Power Supply
? Integrated Power Monitor (POR/PFD) to Supervise Internal Power Supply
? Boot ROM Contains Low Level Flash Programming Routines and a Default Serial
Loader
? High-speed Architecture
– In Standard Mode:
40 MHz (Vcc 2.7V 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 2.7V to 5.5V, Both Internal and External Code Execution)
30 MHz (Vcc 4.5V to 5.5V and Internal Code Execution Only)
? 64K bytes On-chip Flash Program/Data Memory
– Byte and Page (128 bytes) Erase and Write
– 100k Write Cycles
? On-chip 1792 bytes Expanded RAM (XRAM)
– Software Selectable Size (0, 256, 512, 768, 1024, 1792 bytes)
– 768 bytes Selected at Reset for T89C51RD2 Compatibility
? On-chip 2048 bytes EEPROM block for Data Storage
– 100k Write Cycles
? Dual Data Pointer
? 32 KHz Crystal Oscillator
? Variable Length MOVX for Slow RAM/Peripherals
? Improved X2 Mode with Independant Selection for CPU and Each Peripheral
? Keyboard Interrupt Interface on Port 1
? SPI Interface (Master/Slave Mode)
? 8-bit Clock Prescaler
? Two Wire Interface 400K bit/s
? Programmable Counter Array with:
– High Speed Output
– Compare/Capture
– Pulse Width Modulator
– Watchdog Timer Capabilities
? Asynchronous Port Reset
? Full Duplex Enhanced UART with Dedicated Internal Baud Rate Generator
? Low EMI (inhibit ALE)
? Hardware Watchdog Timer (One-time Enabled with Reset-Out), Power-Off Flag.......
...........
现在手头就用这个,价钱吗,你要用我可以给你问问
反正你就用一个,价钱没关系吧,估计就50块多吧