Disable watchdog in FS85

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Disable watchdog in FS85

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ponnitresa_kuri
Contributor III

Hi,

I am working on PMIC which is interfaced with SPI.

I would like to know how to disable the PMIC watchdog durning reprogramming of MCU.

Can any one send sequence of commands to disable the watchdog.

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guoweisun
NXP TechSupport
NXP TechSupport

Hi

You can enter into DEBUG mode for software debug.

In datasheet page14 REV0.8

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14.5 Debug mode
The FS85/FS84 enters in Debug mode with the sequence described in Figure 8:
1. DBG pin = VDBG and VSUP > VSUP_UVH
2. WAKE1 or WAKE2 > WAKE12VIH
VDBG and VSUP can come up at the same time as long as WAKE1 or WAKE2 comes up
---

Thanks!

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