怎么解决加速度计LIS2DH12连接到DA14585 BLE和外部存储器AT25XE011下拉电源和SPI线面临的问题？

DA14585 BLE连接到加速度计LIS2DH12，与外部闪存AT25XE011共用SPI线。我面临两个问题。
1）当所有设备连接到3.2V电源轨时，LIS2DH12将电源下拉至~1.6V。当LIS2DH12的电源断开时，电路板的其余部分获得3.2V的电源。为什么LIS2DH12会造成这种影响？
2）即使LIS2DH12的电源电压被移除，
LIS2DH12
正在拉下共享SPI线SD0 / SA0和SPC。我在这个网站上读到另一个关于更改寄存器值CTRL_REG0（1Eh）的问题
禁用内部上拉
在SA0 / SD0。是否有可能在上电阶段防止这种情况发生？谢谢
Anushiya

＃da14585-with-lis2dh12＃lis2dh12



以下为原文




DA14585 BLE is connected to accelerometer LIS2DH12 sharing the SPI lines with external flash memory AT25XE011. There are two issues I am facing.
1) When all devices are connected to the 3.2V power supply rail, LIS2DH12 pulls down the power supply to ~1.6V. When the power supply to LIS2DH12 is disconnected, the rest of the board get the power supply of 3.2V. Why LIS2DH12 causing this effect?
2) Even when the supply voltage of LIS2DH12 is removed,
LIS2DH12
is pulling down the shared SPI lines SD0/SA0 and SPC. I read in another question at this site about changing the register value CTRL_REG0 (1Eh)
to disable the internal pull-up
at SA0/SD0. Is it possible to prevent this happening at the power up stage? Thank you
Anushiya

#da14585-with-lis2dh12 #lis2dh12