Question about 'RTC external battery' of 'i.MX6 Dual lite'.

[inhojeon]

Hello, all.

I have a question about 'RTC external battery' of  'i.MX6 Dual lite'.

I designed circuit about 'RTC external battery' like below. That refer to 'SABRE Bd' circuit.

I confuse about consuming current of 'RTC external battery' is too much. That consumed about 16mA.

I think needed setting register about 'MMPF0100NPAZES(PMIC)'  or 'i.MX6DL' , Is that right?

And, It seems RTC external battery not full charged. Is that needed setting register?

Please, inform me that problems ,ASAP.

Best Regards,

Inho Jeon.

[Yuri]

Hello,

  From the Datasheet,  "Stop Mode Current and Power Consumption" table,

there is SNVS Only mode, when  VDD_SNVS_IN powered and  all other supplies OFF,

and SRTC is running.  Additional current consumption may be observed because of internal

pulling up / down resistors on signals, that are powered via VDD_SNVS, such as : BOOT_MODE,

TAMPER, ONOFF, POR, PMIC_ON_REQ, PMIC_STBY_REQ, TEST_MODE.

  Please use Linux codes and documentation how to configure PMIC :

chapters bout PF100 Regulator Driver and SNVS Real Time Clock (SRTC) Driver.

http://www.nxp.com/webapp/Download?colCode=L4.1.15_1.2.0_LINUX_DOCS&Parent_nodeId=133769948107170617...

i.MX 6 Series Software and Development Tool|NXP

Have a great day,
Yuri

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