Emulated EEPROM with ECO for CY8CKIT-149

[YoIs_1298666]

Hello,

I am using an ECO-based PLL0 clock as HFCLK, but when I execute Em_EEPROM_1_Write (), it automatically switches the clock to IMO.

When I execute Em_EEPROM_1_Write (), it switches from PLL0 to IMO. Can EZI2C and Timer continue to operate without executing EZI2C_Stop () and Timer_Stop ()?

Best regards,

Yocchi

[Alakananda_BG · Accepted solution]

Hi,

Can you please refer to the PSoC 4 System Reference Guide Flash Section which I have attached below.

https://www.cypress.com/file/220431/download

Can EZI2C and Timer continue to operate without executing EZI2C_Stop () and Timer_Stop ()?

>>You should stop the EZI2C and Timer before calling the Em_EEPROM_1_Write () API because there may be some glitches during the communication.

>>If it is not possible to stop, then you should make sure the IMO and ECO are same.

Regards

Alakananda

[YoIs_1298666]

Hello Alakananda-san,

Thank you very much for your help.

What does the following mean？

Does it mean setting HFCLK to IMO without using ECO?

> If it is not possible to stop, then you should make sure the IMO and ECO are same.

Best regards,

Yocchi

[Alakananda_BG]

Hi,

Does it mean setting HFCLK to IMO without using ECO?

>>Yes. You have to use IMO to route to HFCLK

Regards

Alakananda

[YoIs_1298666]

Hello Alakananda-san,

Thank you very much.

Best regards,

Yocchi