LPC1547JBD48 datasheet(64/99 Pages) NXP

64 / 99 page

LPC15XX

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Product data sheet

Rev. 1 — 19 February 2014

64 of 99

NXP Semiconductors

LPC15xx

32-bit ARM Cortex-M3 microcontroller

11.3 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 Tamb =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 72 MHz.

Table 12.

Power consumption for individual analog and digital blocks

Peripheral

Typical supply current in mA

Notes

n/a

12 MHz

72 MHz

IRC

0.008

System oscillator running; PLL off; independent

of main clock frequency.

System oscillator at 12 MHz

0.220

IRC running; PLL off; independent of main clock

frequency.

Watchdog oscillator

0.002

System oscillator running; PLL off; independent

of main clock frequency.

BOD

0.045

Independent of main clock frequency.

Main PLL

0.085

USB PLL

0.100

SCT PLL

0.110

CLKOUT

0.005

0.01

Main clock divided by 4 in the CLKOUTDIV

ROM

0.015

0.02

GPIO + pin interrupt/pattern

match

0.55

0.60

GPIO pins configured as outputs and set to

LOW. Direction and pin state are maintained if

the GPIO is disabled in the SYSAHBCLKCFG

SWM

0.04

0.29

INPUT MUX

0.05

0.30

IOCON

0.06

0.40

SCTimer0/PWM

0.18

1.10

SCTimer1/PWM

0.19

1.10

SCTimer2/PWM

0.13

0.70

SCTimer3/PWM

0.16

0.90

SCT IPU

0.02

0.1

RTC

0.01

0.05

MRT

0.03

0.10

WWDT

0.01

0.10

Main clock selected as clock source for the

WDT.

RIT

0.07

0.20

QEI

0.12

0.80

I2C0

0.02

0.12

SPI0

0.03

0.3

SPI1

0.01

0.28

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