current consumption and deep sleep

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sna
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current consumption and deep sleep

Hello!

I have problem with current consumption in deep sleep with my DA14531Mod.

I have right now 0.012 uA in deep sleep mode but according data sheet it has to be ~0.005 uA

I use temperture measurement SPI chip MAX6675.

I also need access to flash and for MAX6675 I use software SPI (GPIO_PIN_7, GPIO_PIN_8, GPIO_PIN_9)

I use DA14531-DA14585-586_Ble_Button_Wakeup example as base project for my deep sleep. 

Before sleep  I make setup with my pins

GPIO_SetActive(GPIO_PORT_0, MAX6675_ENABLE); // it is MOSFET to turn off MAX6675 power
GPIO_SetInactive(GPIO_PORT_0, GPIO_PIN_7);
GPIO_SetInactive(GPIO_PORT_0, GPIO_PIN_8);
GPIO_SetInactive(GPIO_PORT_0, GPIO_PIN_9);
syscntl_dcdc_turn_off();

 

Can you help me to decrease current consumption in deep sleep mode?

 

Device: 
PM_Dialog
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Last seen: 6 months 3 weeks ago
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Joined: 2018-02-08 11:03
Hi sna,

Hi sna,

Could you indicate which is the MAX6675_ENABLE pin?

If the P0_0 is used for the MAX6675, please check section 7 Application Information from the DA14531 Module Datasheet .

In case of the power consumption, I would recommend first checking the DA14531 Sleep Mode Tutorial (HTML) tutorial. Please see section 5. Deep Sleep configuration.

Thanks, PM_Dialog

sna
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Last seen: 1 year 7 months ago
Joined: 2020-10-22 14:54
Thanks for your response!

Thanks for your response!

MAX6675_ENABLE - it is a pin GPIO_PIN_5

sna
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Last seen: 1 year 7 months ago
Joined: 2020-10-22 14:54
I already saw  DA14531 Sleep

I already saw  DA14531 Sleep Mode Tutorial (HTML) 

My configuration exactly as tutorial describe.

#define CFG_DEEP_SLEEP_RAM1            PD_SYS_DOWN_RAM_OFF
#define CFG_DEEP_SLEEP_RAM2            PD_SYS_DOWN_RAM_OFF
#define CFG_DEEP_SLEEP_RAM3            PD_SYS_DOWN_RAM_OFF
#define CFG_DEEP_SLEEP_PAD_LATCH_EN    false

.... Here my setup to wakeup by GPIO_PIN_11

    wkupct_enable_irq(    (WKUPCT_PIN_SELECT(GPIO_PORT_0, GPIO_PIN_11) ),
            (WKUPCT_PIN_POLARITY(GPIO_PORT_0, GPIO_PIN_11, WKUPCT_PIN_POLARITY_HIGH) ),
                             EVENTS_BEFORE_INTERRUPT, DEBOUNCE_TIME);

    wkupct_register_callback(user_app_wakeup_press_cb);

 

 

PM_Dialog
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Hi sna,

Hi sna,

Thanks for your comment. If you remove the MAX6675, what is the power consumption run the tutorial? I assume that the on-module SPI flash is programmed and the device is booting from there.

Is it a custom board, or our Pro-DK ?

Thanks, PM_Dialog

sna
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Last seen: 1 year 7 months ago
Joined: 2020-10-22 14:54
This is a custom board;

This is a custom board;

I unsoldered MAX6675 - so the consumption the same. This value still unchaged

PM_Dialog
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Last seen: 6 months 3 weeks ago
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Joined: 2018-02-08 11:03
Hi sna,

Hi sna,

Which project are you using to measure the deep sleep currents? Did you follow the suggested tutorial?

Thanks, PM_Dialog