LPC1787 datasheet(73/117 Pages) NXP

73 / 117 page

LPC178X_7X

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Objective data sheet

Rev. 2 — 27 May 2011

73 of 117

NXP Semiconductors

LPC178x/7x

32-bit ARM Cortex-M3 microcontroller

[1]

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

C), nominal supply voltages.

[2]

For USB operation 3.0 V

 V

DD((3V3)  3.6 V. Guaranteed by design.

[3]

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

[4]

VDD(REG)(3V3) = 3.3 V; Tamb =25 C for all power consumption measurements.

[5]

IRC running at 12 MHz; main oscillator and PLL disabled; PCLK = CCLK/4.

[6]

BOD disabled.

[7]

On pin VBAT; IDD(REG)(3V3) = <tbd>; VDD(REG)(3V3) = 3.3 V; VBAT = 3.3 V; Tamb =25 C.

[8]

On pin VBAT; VBAT = 3.3 V; Tamb =25 C.

Vhys

hysteresis voltage

<tbd>VDD(3

V3)

-V

VOL

LOW-level output

voltage

IOLS = 3 mA

--0.4

ILI

input leakage current

VI =VDD(3V3)

[16] -<tbd>

<tbd>

A

VI =5V

<tbd>

A

USB pins

IOZ

OFF-state output

current

0V<VI <3.3 V

10

A

VBUS

bus supply voltage

5.25

VDI

differential input

sensitivity voltage

(D+)  (D)

0.2

--V

VCM

differential common

mode voltage range

includes VDI range

0.8

2.5

Vth(rs)se

single-ended receiver

switching threshold

voltage

0.8

2.0

VOL

LOW-level output

voltage for

low-/full-speed

RL of 1.5 k to 3.6 V

0.18

VOH

HIGH-level output

voltage (driven) for

low-/full-speed

RL of 15 k to GND

2.8

3.5

Ctrans

transceiver capacitance pin to GND

ZDRV

driver output

impedance for driver

which is not high-speed

capable

with 33

 series resistor;

steady state drive

[17] 36

44.1



Oscillator pins (see Section 14.2)

Vi(XTAL1)

input voltage on pin

XTAL1

0.5

1.8

1.95

Vo(XTAL2)

output voltage on pin

XTAL2

0.5

1.8

1.95

Vi(RTCX1)

input voltage on pin

RTCX1

0.5

3.6

Vo(RTCX2)

output voltage on pin

RTCX2

0.5

3.6

Table 11.

Static characteristics …continued

Tamb = 40 C to +85 C, unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ[1]

Max

Unit

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