LPC11U24 Active Mode Supply Current

[tech_34]

I am currently working with the LPC11U24 on the NTAG I2C Plus board and finding that even with the following configuration in the demo code:

Chip_SYSCTL_PowerUp(SYSCTL_POWERDOWN_WDTOSC_PD);
LPC_SYSCTL->SYSAHBCLKCTRL |= (1<<15); // enable clock to WDT block
Chip_Clock_SetWDTOSC(WDTLFO_OSC_4_60, 2);
LPC_WWDT->CLKSEL |= (1<<0); // select watchdog oscillator
Chip_Clock_SetMainClockSource(SYSCTL_MAINCLKSRC_WDTOSC);

The board (without LCD attached) is consuming ~1.4-1.6mA. Is there an active mode configuration for this board and microcontroller that can result in something in the region of 0.5mA?

Thanks,
Karl

[kerryzhou]

Hi tech_34,

    From the datasheet, you can get your 1.4-1.6mA is correct, the MCU power consumption in active mode is above 1mA,

Wish it helps you!

If you still have question, please let me know!

Have a great day,
Jingjing

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[tech_34]

Is this not the correct forum for this question? Please advise.

[lpcware]

bump