单片机的区别! 单片机

qutao88

前两天的问题解决了,原来是片子型号不一样造成的,想请问一下,mc9s12dg128cpv和mc9s12dg128bcpv有什么区别,那里有有关这方面的说明资料!

strongchen

也许这个有所帮助:

http://forums.freescale.com/freescale/board/message?board.id=16BITCOMM&message.id=396&srch=1

qutao88

网页很难打开,没有搞清楚它们,现在觉的片子不好选,

seuafu2005

你的芯片是128和128B之间的区别，strong版主转发的帖子我给你贴出来，是DJ256和DJ256B的区别，供你参考
There is no master document noting the differences (that I know off), but below I created a list of the differences that I know for sure. For the most part the device from a software and hardware perspective does not change. Most of the differences are fixes.

1) "B" and "non-B" are different in mask set numbers, therefore review the new erratas list. Old erratas should be corrected. "B" is 0/1K79X and "non-B" is L91N/L01Y.

2) The Flash & EEPROM reliability characteristics on the "non-B" device is improved compared to the "B" devices. Look at Table A-12 for both device datasheets to see changes to NVM reliability.

"B" datasheet:
http://www.freescale.com/files/microcontrollers/doc/data_sheet/9S12DP256BDGV2.pdf
"non-B" datasheet: http://www.freescale.com/files/microcontrollers/doc/data_sheet/9S12DT256DGV3.pdf

3) The CRG block has been rev'd to support "Pierce Oscillator" configuration on "non-B" parts as opposed to "Colpitts Oscillator" only on "B" parts.

4) Minor tweaks to SPI and PIM. Modules were rev'd from SPIV2 to SPIV4 and PIMV2 to PIMV3 going from "B" parts to "non-B" parts.