Datasheet

ManualsBrandsNXP SEMICONDUCTORS ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller HVQFN 32 (5x5) 32-Bit 30 MHz I/O number 29

Product data sheet Rev. 1 — 1 October 2014 46 of 81

NXP Semiconductors

LPC82x

32-bit ARM Cortex-M0+ microcontroller

11.6 Peripheral power consumption

The supply current per peripheral is measured as the difference in supply current between

the peripheral block enabled and the peripheral block disabled in the SYSAHBCLKCFG.

and PDRUNCFG (for analog blocks) registers. All other blocks are disabled in both

registers and no code accessing the peripheral is executed. Measured on a typical

sample at T

amb

=25 C. Unless noted otherwise, the system oscillator and PLL are

running in both measurements.

The supply currents are shown for system clock frequencies of 12 MHz and 30 MHz.

Table 10. Power consumption for individual analog and digital blocks

Peripheral Typical supply current in μA Notes

Main clock frequency =

n/a 12 MHz 30 MHz

IRC 261 - - System oscillator running; PLL off;

independent of main clock frequency; IRC

output disabled.

System oscillator at 12 MHz 274 - - IRC running; PLL off; independent of main

clock frequency.

Watchdog oscillator 2 - - System oscillator running; PLL off;

independent of main clock frequency.

BOD 39 - - Independent of main clock frequency.

Main PLL - 301 - -

CLKOUT - 67 150 Main clock divided by 4 in the CLKOUTDIV

ROM - 27 68 -

GPIO + pin interrupt/pattern

match

- 95 233 GPIO pins configured as outputs and set to

LOW. Direction and pin state are maintained if

the GPIO is disabled in the SYSAHBCLKCFG

SWM - 59 145 -

IOCON - 45 110 -

SCTimer/PWM - 168 411 -

MRT - 89 220 -

WWDT - 29 71 -

I2C0 - 54 132 -

I2C1 - 49 122 -

I2C2 - 52 127 -

I2C3 - 57 142 -

SPI0 - 55 136 -

SPI1 - 55 136 -

USART0 - 50 124 -

USART1 - 54 134 -

USART2 - 56 138 -

Comparator ACMP - 34 82 -