LPC2141 datasheet(10/39 Pages) NXP

Part #	LPC2141

Description	Single-chip 16-bit/32-bit microcontrollers; up to 512 kB flash with ISP/IAP, USB 2.0 full-speed device, 10-bit ADC and DAC

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Manufacturer	NXP [NXP Semiconductors]

Direct Link	http://www.nxp.com

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10 / 39 page

LPC2141_42_44_46_48_3

Product data sheet

Rev. 03 — 19 October 2007

10 of 39

NXP Semiconductors

LPC2141/42/44/46/48

Single-chip 16-bit/32-bit microcontrollers

P0.31/UP_LED/

CONNECT

17[6]

O

P0.31 — General purpose output only digital pin (GPO)

O

UP_LED — USB GoodLink LED indicator, it is LOW when device is

conﬁgured (non-control endpoints enabled), it is HIGH when the device is not

conﬁgured or during global suspend

O

CONNECT — Signal used to switch an external 1.5 k

Ω resistor under the

software control, used with the SoftConnect USB feature

Important: This is an digital output only pin, this pin MUST NOT be externally

pulled LOW when RESET pin is LOW or the JTAG port will be disabled

P1.0 to P1.31

I/O

Port 1: Port 1 is a 32-bit bidirectional I/O port with individual direction controls

for each bit, the operation of port 1 pins depends upon the pin function

selected via the pin connect block, pins 0 through 15 of port 1 are not

available

P1.16/

TRACEPKT0

16[6]

I/O

P1.16 — General purpose input/output digital pin (GPIO)

O

TRACEPKT0 — Trace Packet, bit 0, standard I/O port with internal pull-up

P1.17/

TRACEPKT1

12[6]

I/O

P1.17 — General purpose input/output digital pin (GPIO)

O

TRACEPKT1 — Trace Packet, bit 1, standard I/O port with internal pull-up

P1.18/

TRACEPKT2

8[6]

I/O

P1.18 — General purpose input/output digital pin (GPIO)

O

TRACEPKT2 — Trace Packet, bit 2, standard I/O port with internal pull-up

P1.19/

TRACEPKT3

4[6]

I/O

P1.19 — General purpose input/output digital pin (GPIO)

O

TRACEPKT3 — Trace Packet, bit 3, standard I/O port with internal pull-up

P1.20/

TRACESYNC

48[6]

I/O

P1.20 — General purpose input/output digital pin (GPIO)

O

TRACESYNC — Trace Synchronization, standard I/O port with internal

pull-up

Note: LOW on this pin while RESET is LOW enables pins P1.25:16 to

operate as Trace port after reset

P1.21/

PIPESTAT0

44[6]

I/O

P1.21 — General purpose input/output digital pin (GPIO)

O

PIPESTAT0 — Pipeline Status, bit 0, standard I/O port with internal pull-up

P1.22/

PIPESTAT1

40[6]

I/O

P1.22 — General purpose input/output digital pin (GPIO)

O

PIPESTAT1 — Pipeline Status, bit 1, standard I/O port with internal pull-up

P1.23/

PIPESTAT2

36[6]

I/O

P1.23 — General purpose input/output digital pin (GPIO)

O

PIPESTAT2 — Pipeline Status, bit 2, standard I/O port with internal pull-up

P1.24/

TRACECLK

32[6]

I/O

P1.24 — General purpose input/output digital pin (GPIO)

O

TRACECLK — Trace Clock, standard I/O port with internal pull-up

P1.25/EXTIN0

28[6]

I/O

P1.25 — General purpose input/output digital pin (GPIO)

I

EXTIN0 — External Trigger Input, standard I/O with internal pull-up

P1.26/RTCK

24[6]

I/O

P1.26 — General purpose input/output digital pin (GPIO)

I/O

RTCK — Returned Test Clock output, extra signal added to the JTAG port,

assists debugger synchronization when processor frequency varies,

bidirectional pin with internal pull-up

Note: LOW on RTCK while RESET is LOW enables pins P1.31:26 to operate

as Debug port after reset

P1.27/TDO

64[6]

I/O

P1.27 — General purpose input/output digital pin (GPIO)

O

TDO — Test Data out for JTAG interface

Table 3.

Pin description …continued

Symbol

Type

Description

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