LPC18S50 datasheet(97/151 Pages) NXP

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LPC18S50_S30_S10

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Product data sheet

Rev. 1 — 23 February 2015

97 of 151

NXP Semiconductors

LPC18S50/S30/S10

32-bit ARM Cortex-M3 microcontroller

10.2 Peripheral power consumption

The typical power consumption at T = 25

C for each individual peripheral is measured as

follows:

1. Enable all branch clocks and measure the current IDD(REG)(3V3).

2. Disable the branch clock to the peripheral to be measured and keep all other branch

clocks enabled.

3. Calculate the difference between measurement 1 and 2. The result is the peripheral

power consumption.

Conditions: VDD(REG)(3V3), VDD(IO) floating.

Fig 18. Typical battery supply versus temperature in Deep power-down mode

002aah157

-40

-15

temperature (°C)

IBAT

(μA)

3.6 V

3.0 V

2.2 V

VBAT =

Table 11.

Peripheral power consumption

Peripheral

Branch clock

IDD(REG)(3V3) in mA

Branch clock

frequency = 48 MHz

Branch clock

frequency = 96 MHz

I2C1

CLK_APB3_I2C1

0.01

0.02

I2C0

CLK_APB1_I2C0

0.02

0.01

DAC

CLK_APB3_DAC

0.01

0.02

ADC0

CLK_APB3_ADC0

0.05

ADC1

CLK_APB3_ADC1

0.04

CAN0

CLK_APB3_CAN0

0.17

CAN1

CLK_APB1_CAN1

0.17

MOTOCON

CLK_APB1_MOTOCON

0.05

I2S

CLK_APB1_I2S

0.11

SPIFI

CLK_SPIFI,

CLK_M3_SPIFI

0.95

1.85

GPIO

CLK_M3_GPIO

0.66

1.31

LCD

CLK_M3_LCD

0.85

1.72

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