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philips的D12评估板问题
那块评估板上的MCU用的是89c738,可我听说用89c52也可以,然后我查了一下这两块片子,
Chip 89C738 Suppliers... Philips Process... CMOS Characteristics Memory: 64K EPROM 512b RAM Ext. Memory:.. 128K Total IRQs / External IRQs 6/2 Timers/Counters... 2 Watchdog... Yes I/O Lines... 32 Serial ports... 1 ADC: Inputs/ Resolution 0/0 PWM outputs... 0 Op.Voltage... 4.5 - 5.5 Clock type... Crystal Max Speed (MHz)... 40 Max Current (Running) 24mA Max Current (Idle) 5mA Speed for current measurements (MHz) 16 Other Features... PCM, LowRFI, Packages... 40-PDIP, 44-PLCC,44-PQFP Temperature ranges... C Chip 89C52 Suppliers... ISSI, Philips Process... CMOS Characteristics Memory: 8K Flash(ISP) 256b RAM Ext. Memory:.. 64K Total IRQs / External IRQs 6/2 Timers/Counters... 3 Watchdog... No I/O Lines... 32 Serial ports... 1 ADC: Inputs/ Resolution 0/0 PWM outputs... 0 Op.Voltage... 4.5 - 5.5 Clock type... Crystal Max Speed (MHz)... 40 Max Current (Running) 13mA Max Current (Idle) 3mA Speed for current measurements (MHz) 12 Other Features... PCM, 4 Interrupt priorities, 2 Data Pointers, Packages... 40-PDIP;44-PLCC;44-QFP Temperature ranges... C,E 我想请问的是如果c52可以完成功能,philips为什么要用738,我想应该是52比较便宜吧? |
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沙发#
发布于:2002-10-18 15:07
purple_zt 大侠!请问你的USB接口中关于89C738和89C52是否可以通用的问题的最后答案是什么?
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板凳#
发布于:2002-10-18 15:08
purple_zt 大侠!请问你的USB接口中关于89C738和89C52是否可以通用的问题的最后答案是什么? 我的EMAIL-yangdabao309@163.com
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地板#
发布于:2002-10-18 15:59
可以的
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地下室#
发布于:2002-10-18 16:25
周立功唬你呢,以为用个58就高一个档次,其实52足够了。除非你想在下面开发一个操作系统,呵呵!
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