ARM7 datasheet(10/38 Pages) PHILIPS

10 / 38 page

9397 750 14985

Preliminary data sheet

Rev. 01 — 3 October 2005

10 of 38

Philips Semiconductors

LPC2141/42/44/46/48

Single-chip 16-bit/32-bit microcontrollers

P0.31/UP_LED/

CONNECT

17 [6]

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

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.

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).

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).

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).

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).

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).

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).

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).

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).

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).

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).

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).

TDO — Test Data out for JTAG interface.

Table 3:

Pin description …continued

Symbol

Type

Description

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