How to turn off i.MX25 all modules on STOP mode

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How to turn off i.MX25 all modules on STOP mode

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admin
Specialist II

How to turn off i.MX25 all modules by code, retaining only keypad module wake-up feature to reduce the current?

If the hardware conditions i.MX25CPU + DDR RAM + Nand Flash can be reduced to 6 mA?

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Bio_TICFSL
NXP TechSupport
NXP TechSupport

Hi Jelly,


As it mention on table 8.1 of the i.MX25 Reference Manual,  It shows which power rails are power on.  For example in doze mode

• ARM platform clock is off

• Well bias is on

• Core PLL is on

• USB PLL is off (optional)

• OSC24M is on

• OSC32K is on

• All the other modules are off (optional).

All of the interrupt sources, listed in the Table 15-34 of the i.MX25 Reference Manual (IMX25RM) Rev.1 document, can be used (if not masked in the LPIMR0 and LPIMR1 registers) to wake up the processor from a low power modes with gated core clock.



http://cache.freescale.com/files/dsp/doc/ref_manual/IMX25RM.pdf


Regards

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