外部8M晶振,3.3v供电,使用JTAG MKⅡ进行ISP下载,熔丝位设置如下:
Boot flash section size=128 words Boot start address=$0F80 [BOOTSZ=11]
Brown-out detection level at VCC=2.7V [BODLEVEL=101]
Ext.Crystal Osc;Frequency 3.0-8.0M;Start-up time PWRDWN/RESET:16k CK/14 CK +65ms [CKSEL=1101 SUT=11]
问题:
1.程序下载后,单片机不工作
2.尝试利用Debugwire仿真,首先使能了DWEN熔丝位,然后连接过程中AVRstudio提示“An device with SPI signature 0x1e9307 was detected.This device is unknown or unsupported by this version of AVR studio”.将AVRstudio升级到最新的V4.17,还是不行。
总不会我用的芯片不对吧?芯片表面的代码是 Atmel E88L 8AU 0651, |