LPC2131 datasheet(28/39 Pages) NXP

28 / 39 page

LPC2131_32_34_36_38_4

Product data sheet

Rev. 04 — 16 October 2007

28 of 39

NXP Semiconductors

LPC2131/32/34/36/38

Single-chip 16/32-bit microcontrollers

[1]

Typical ratings are not guaranteed. The values listed are at room temperature (25

°C), nominal supply voltages.

[2]

The RTC typically fails when Vi(VBAT) drops below 1.6 V.

[3]

Including voltage on outputs in 3-state mode.

IBATpd

Power-down mode battery

supply current[10]

RTC clock = 32 kHz

(from RTCX pins);

Tamb =25 °C

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

µA

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

µA

VDD = 3.3 V; Vi(VBAT) = 3.3 V

µA

VDD = 3.6 V; Vi(VBAT) = 3.6 V

µA

IBATact

active mode battery

supply current[10]

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

µA

VDD = 3.3 V; Vi(VBAT) = 3.3 V

µA

VDD = 3.6 V; Vi(VBAT) = 3.6 V

µA

IBATact(opt) optimized active mode

battery supply

current[10][11]

PCLK disabled to RTCK in the

PCONP register;

RTC clock = 32 kHz

(from RTCX pins);

Tamb =25 °C; Vi(VBAT) = 3.3 V

CCLK = 6 MHz

µA

CCLK = 25 MHz

µA

CCLK = 50 MHz

µA

CCLK = 60 MHz

µA

I2C-bus pins

VIH

HIGH-level input voltage

[12] 0.7VDD

VIL

LOW-level input voltage

[12] -

0.3VDD

Vhys

hysteresis voltage

0.5VDD

-V

VOL

LOW-level output voltage

IOLS = 3 mA

[6] -

0.4

ILI

input leakage current

VI =VDD

[13] -2

µA

VI =5V

[13] -10

µA

Oscillator pins

Vi(XTAL1)

input voltage on pin

XTAL1

1.8

Vo(XTAL2)

output voltage on pin

XTAL2

1.8

Vi(RTCX1)

input voltage on pin

RTCX1

1.8

Vo(RTCX2)

output voltage on pin

RTCX2

1.8

Table 6.

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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