LPC1759_11 datasheet(45/74 Pages) NXP

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LPC1759_58_56_54_52_51

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Product data sheet

Rev. 7 — 29 March 2011

45 of 74

NXP Semiconductors

LPC1759/58/56/54/52/51

32-bit ARM Cortex-M3 microcontroller

10.2 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 PCONP register. All

other blocks are disabled and no code is executed. Measured on a typical sample at

Tamb =25 C. The peripheral clock PCLK = CCLK/4.

[1]

The combined current of several peripherals running at the same time can be less than the sum of each individual peripheral current

measured separately.

Table 7.

Power consumption for individual analog and digital blocks

Peripheral

Conditions

Typical supply current in mA;

CCLK =

Notes

12 MHz

48 MHz

100 MHz

Timer

0.03

0.11

0.23

Average current per timer

UART

0.07

0.26

0.53

Average current per UART

PWM

0.05

0.20

0.41

Motor control

PWM

0.05

0.21

0.42

I2C

0.02

0.08

0.16

Average current per I2C

SPI

0.02

0.06

0.13

SSP1

0.04

0.16

0.32

ADC

PCLK = 12 MHz for CCLK = 12 MHz

and 48 MHz; PCLK = 12.5 MHz for

CCLK = 100 MHz

2.12

2.09

2.07

CAN

PCLK = CCLK/6

0.13

0.49

1.00

Average current per CAN

CAN0, CAN1,

acceptance filter

PCLK = CCLK/6

0.22

0.85

1.73

Both CAN blocks and

acceptance filter[1]

DMA

PCLK = CCLK

1.33

5.10

10.36

QEI

0.05

0.20

0.41

GPIO

0.33

1.27

2.58

I2S

0.09

0.34

0.70

USB and PLL1

0.94

1.32

1.94

Ethernet

Ethernet block enabled in the PCONP

0.49

1.87

3.79

Ethernet

connected

Ethernet initialized, connected to

network, and running web server

example.

5.19

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