关于LPC2294烧写外部flash报错问题

[1263906294]

通过LPC2294HBD/01想烧写外部flash.发现烧写不正常.可以读可以擦,读擦都通过JFLASH实现的.疑惑如下.

1.LPC2294 P3[27] WE 写使能为何配置完寄存器还是无效?

2.上电之后P3[27]电压为2.3V.但是ARM端片选使能(CSO P1[0])和OE(P1[1])电压为3.3V.

3.但是P3[27]可以人为配置成通用IO,通用IO之后可以输出高低点平,0和3.3V.

报错为: Programming failed @ address 0x80000000(item verification error)

              Failed to program target 

              Failed to program and verify target

希望能尽快得到答复，谢谢您.

[jimmychan]

The App. Note AN10600 may useful for you.

Here is the documentation page of LPC2200.

16/32-bit ARM microcontroller with CAN, 10-bit ADC and external memory interface|NXP 

App. Note.

• Connecting NXP^® ARM-based microcontroller LPC2200 to small page NAND flash ^{(REV 2.0)}