LPC2377 datasheet(39/55 Pages) NXP

39 / 55 page

LPC2377_78_4

Product data sheet

Rev. 04 — 19 November 2008

39 of 55

NXP Semiconductors

LPC2377/78

Single-chip 16-bit/32-bit microcontroller

[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.

[4]

VDD(3V3) supply voltages must be present.

[5]

3-state outputs go into 3-state mode when VDD(3V3) is grounded.

[6]

Please also see the errata note in errata sheet.

[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] On pin VBAT.

[11] To VSS.

[12] Includes external resistors of 18

Ω± 1 % on D+ and D−.

VDI

differential input

sensitivity

|(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 for

low-/full-speed

RL of 1.5 kΩ to 3.6 V

0.18

VOH

HIGH-level output

voltage (driven) for

low-/full-speed

RL of 15 kΩ 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

Ω series resistor;

steady state drive

[12] 36

44.1

Ω

Rpu

pull-up resistance

SoftConnect = ON

1.1

1.9

Ω

Table 5.

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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