LPC2157 datasheet(33/45 Pages) NXP

33 / 45 page

LPC2157_2158_2

Product data sheet

Rev. 02 — 9 February 2009

33 of 45

NXP Semiconductors

LPC2157/2158

Single-chip 16-bit/32-bit microcontrollers

IDD(act)

active mode supply

current

VDD = 3.3 V; Tamb =25 °C;

code

while(1){}

executed from ﬂash, no active

peripherals

CCLK = 10 MHz

1550mA

CCLK = 60 MHz

VDD = 3.3 V; Tamb =25 °C;

code executed from ﬂash; USB

enabled and active; all other

peripherals disabled

CCLK = 12 MHz

2770mA

CCLK = 60 MHz

IDD(pd)

Power-down mode

supply current

VDD = 3.3 V; Tamb =25 °C

100

µA

VDD = 3.3 V; Tamb =85 °C

250

500

µA

IBATpd

Power-down mode

battery supply current

RTC clock = 32 kHz

(from RTCX pins);

Tamb =25 °C

VDD = 3.0 V; Vi(VBAT) = 2.5 V

[12] -15

µA

VDD = 3.0 V; Vi(VBAT) = 3.0 V

µA

IBATact

active mode battery

supply current

CCLK = 60 MHz;

PCLK = 15 MHz;

PCLK enabled to RTCK;

RTC clock = 32 kHz

(from RTCX pins);

Tamb =25 °C

VDD = 3.0 V; Vi(VBAT) = 3.0 V

[12] -78

µA

IBATact(opt)

optimized active mode

battery supply current

PCLK disabled to RTCK in the

PCONP register;

RTC clock = 32 kHz

(from RTCX pins);

Tamb =25 °C; Vi(VBAT) = 3.3 V

CCLK = 25 MHz

[12][13] -23

µA

CCLK = 60 MHz

µA

I2C-bus pins

VIH

HIGH-level input voltage

0.7VDD

--V

VIL

LOW-level input voltage

0.3VDD

Vhys

hysteresis voltage

0.5VDD

-V

VOL

LOW-level output

voltage

IOLS = 3 mA

[8] -

0.4

ILI

input leakage current

VI =VDD

[14] -2

µA

VI = 5 V

µA

Oscillator pins

Vi(XTAL1)

input voltage on pin

XTAL1

1.8

Table 7.

Static characteristics …continued

Tamb = −40 °C to +85 °C for commercial applications, unless otherwise speciﬁed.

Symbol

Parameter

Conditions

Min

Typ[1]

Max

Unit

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LPC2157 数据表(PDF) 33 Page - NXP Semiconductors

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