LPC2144 NXP [NXP Semiconductors], LPC2144 Datasheet - Page 10

• Manufacturer Part Number: LPC2144
• 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
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
Table 3.
LPC2141_42_44_46_48_3
Product data sheet
Symbol
P0.31/UP_LED/
CONNECT
P1.0 to P1.31
P1.16/
TRACEPKT0
P1.17/
TRACEPKT1
P1.18/
TRACEPKT2
P1.19/
TRACEPKT3
P1.20/
TRACESYNC
P1.21/
PIPESTAT0
P1.22/
PIPESTAT1
P1.23/
PIPESTAT2
P1.24/
TRACECLK
P1.25/EXTIN0
P1.26/RTCK
P1.27/TDO
Pin description
Pin
17
16
12
8
4
48
44
40
36
32
28
24
64
[6]
[6]
[6]
[6]
[6]
[6]
[6]
[6]
[6]
[6]
[6]
[6]
[6]
…continued
Type
O
O
O
I/O
O
I/O
O
I/O
O
I/O
O
I/O
O
I/O
O
I/O
O
I/O
O
I/O
O
I/O
I
I/O
I/O
I/O
O
I/O
Description
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 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
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 — General purpose input/output digital pin (GPIO)
TRACEPKT0 — Trace Packet, bit 0, standard I/O port with internal pull-up
P1.17 — General purpose input/output digital pin (GPIO)
TRACEPKT1 — Trace Packet, bit 1, standard I/O port with internal pull-up
P1.18 — General purpose input/output digital pin (GPIO)
TRACEPKT2 — Trace Packet, bit 2, standard I/O port with internal pull-up
P1.19 — General purpose input/output digital pin (GPIO)
TRACEPKT3 — Trace Packet, bit 3, standard I/O port with internal pull-up
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 — General purpose input/output digital pin (GPIO)
PIPESTAT0 — Pipeline Status, bit 0, standard I/O port with internal pull-up
P1.22 — General purpose input/output digital pin (GPIO)
PIPESTAT1 — Pipeline Status, bit 1, standard I/O port with internal pull-up
P1.23 — General purpose input/output digital pin (GPIO)
PIPESTAT2 — Pipeline Status, bit 2, standard I/O port with internal pull-up
P1.24 — General purpose input/output digital pin (GPIO)
TRACECLK — Trace Clock, standard I/O port with internal pull-up
P1.25 — General purpose input/output digital pin (GPIO)
EXTIN0 — External Trigger Input, standard I/O with internal pull-up
P1.26 — General purpose input/output digital pin (GPIO)
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 — General purpose input/output digital pin (GPIO)
TDO — Test Data out for JTAG interface
Rev. 03 — 19 October 2007
LPC2141/42/44/46/48
Single-chip 16-bit/32-bit microcontrollers
© NXP B.V. 2007. All rights reserved.
10 of 39