Datasheet

LPC15XX All information provided in this document is subject to legal disclaimers. © NXP B.V. 2014. All rights reserved.
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 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 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
register.
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
register.
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 -