LPC2158 datasheet(34/45 Pages) NXP

34 / 45 page

LPC2157_2158_1

Product data sheet

Rev. 01 — 15 October 2008

34 of 45

NXP Semiconductors

LPC2157/2158

Single-chip 16-bit/32-bit microcontrollers

[1]

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

°C), nominal supply voltages.

[2]

Core and external rail.

[3]

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

[4]

Including voltage on outputs in 3-state mode.

[5]

VDD supply voltages must be present.

[6]

3-state outputs go into 3-state mode when VDD is grounded.

[7]

Accounts for 100 mV voltage drop in all supply lines.

[8]

Allowed as long as the current limit does not exceed the maximum current allowed by the device.

[9]

Minimum condition for VI = 4.5 V, maximum condition for VI = 5.5 V.

[10] Applies to P1[16] to P1[31].

[11] On pin VBAT.

[12] Optimized for low battery consumption.

[13] To VSS.

[14] Includes external resistors of 18

Ω±1 % on D+ and D−.

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

USB pins

IOZ

OFF-state output

current

0V<VI < 3.3 V

±10

µA

VBUS

bus supply voltage

5.25

VDI

differential input

sensitivity voltage

|(D+)

− (D−)|

0.2

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

RL of 1.5 kΩ to 3.6 V

0.3

VOH

HIGH-level output

voltage

RL of 15 kΩ to GND

2.8

3.6

Ctrans

transceiver capacitance

pin to GND

ZDRV

driver output impedance

for driver which is not

high-speed capable

steady state drive

[14] 29

Ω

Rpu

pull-up resistance

SoftConnect = ON

1.1

1.9

Ω

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

LPC2158 数据表(PDF) 34 Page - NXP Semiconductors

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LPC2158 数据表(PDF) 34 Page - NXP Semiconductors

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