将数据写入eeprom结果始终为0xFF

你好。

我有一个M95320 EEPROM，我把它连接到英飞凌微控制器XC2331D。随函附上EEPROM的电路图。

我试图通过SPI端口与EEPROM通信，并将字符 a 写入EEPROM并将其读回，但结果始终为0xFF。我使用逻辑分析仪监控EEPROM SPI端口，随附您可以找到监控结果。
您可以看到，我已经读取了状态寄存器内容，并且我在MISO端口上收到了正确的数据，因此似乎数据尚未写入EEPROM，这就是接收值始终为0xFF的原因。
我的问题是为什么当EEPROM的HOLD和WP引脚上的信号为高电平时，数据没有被写入EEPROM？
我们将非常感谢您给我的任何反馈意见。

#eeprom



以下为原文




Hello.


I have an M95320 EEPROM and I have connected it to an Infineon microcontroller XC2331D. Enclosed you can find the circuit diagram for the EEPROM.

I have tried to communicate with the EEPROM through SPI ports and write character �a� to EEPROM and read it back, but the result is always 0xFF. I have monitored the EEPROM SPI ports using Logic analyzer and enclosed you can find the monitoring results.

Since you can see, I have read the status register content and I have received a correct data on MISO port, therefore it seems that the data has not been written to the EEPROM and that is why the received value is always 0xFF.

My question is why the data has not been written to the EEPROM while the signal on HOLD and WP pins of EEPROM is high?

Any feedback you can give me on this would be gratefully received.
  
#eeprom