current consumption and deep sleep

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Last post
Tue, 2021-02-02 16:13
#1
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();

你能帮我减少当前消费deep sleep mode?

Device:
DA14531
Wed, 2021-02-03 15:12
PM_Dialog
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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 theDA14531 Module Datasheet.

In case of the power consumption, I would recommend first checking theDA14531 Sleep Mode Tutorial (HTML)tutorial. Please see section 5. Deep Sleep configuration.

Thanks, PM_Dialog

Thu, 2021-02-04 08:05
sna
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Joined:2020-10-22 14:54
Thanks for your response!

Thanks for your response!

MAX6675_ENABLE - it is a pin GPIO_PIN_5

Thu, 2021-02-04 08:13
sna
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Joined:2020-10-22 14:54
I already saw DA14531 Sleep

I already sawDA14531 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);

Thu, 2021-02-04 15:40
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

Thu, 2021-02-04 16:03
(Reply to #5)
sna
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This is a custom board;

This is a custom board;

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

Thu, 2021-02-11 16:41
PM_Dialog
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Hi sna,

Hi sna,

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

Thanks, PM_Dialog