How to reset MM9Z1-638 device

取消
显示结果 
显示  仅  | 搜索替代 
您的意思是: 
已解决

How to reset MM9Z1-638 device

跳至解决方案
1,436 次查看
gumu
Contributor V

Hello,

I tried to use PCRReset() to reset MCU, it didn't work.

I'd like to know how to reset MM9Z1-638 device except watchdog?

标记 (1)
0 项奖励
回复
1 解答
1,345 次查看
gumu
Contributor V

reset funcion is normal after removing 470nf capacitor .

在原帖中查看解决方案

0 项奖励
回复
4 回复数
1,346 次查看
gumu
Contributor V

reset funcion is normal after removing 470nf capacitor .

0 项奖励
回复
1,407 次查看
gumu
Contributor V

Hi @Q_man ,

There is a 470nf capacitor between RESET and GND. Does it impact action of PCR_CTL.HWR(M)?

RESET and RESET_A is connected together.

0 项奖励
回复
1,390 次查看
Q_man
NXP Employee
NXP Employee

The 470nF is required to avoid the analog chip watchdog to periodically reset the uC. It should only be use for FLASH programming and should NOT be present in the application or software testing.

reset1.png

reset2.png

0 项奖励
回复
1,418 次查看
Q_man
NXP Employee
NXP Employee

Hi,

using the PCR_CTL.HWR(M) should generate a Reset (RESET_A should be pulled low) if the D2D Interface is initialized.

What hardware do you use?

- are the RESET_A and RESET pins connected?

- is there anything else connected externally to the RESET?

- is the D2D interface setup correctly? E.g. can you read from the analog die (e.g. the PCR_SR)

Rgds

W.

 

0 项奖励
回复