LPC2157 View Datasheet(PDF) - Philips Electronics
Part Name
Description
Manufacturer
LPC2157
Philips Electronics
LPC2157 Datasheet PDF : 45 Pages
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NXP Semiconductors
LPC2157/2158
Single-chip 16-bit/32-bit microcontrollers
Table 2. Pin description LPC2157 …continued
Symbol
Pin
Type Description
P0[27]/AD0[0]/
99[7]
CAP0[1]/MAT0[1]
I/O
P0[27] — General purpose input/output digital pin (GPIO).
I
AD0[0] — ADC 0, input 0. This analog input is always connected to its pin.
I
CAP0[1] — Capture input for Timer 0, channel 1.
O
MAT0[1] — Match output for Timer 0, channel 1.
P0[28]/AD0[1]/
1[4]
CAP0[2]/MAT0[2]
I/O
P0[28] — General purpose input/output digital pin (GPIO).
I
AD0[1] — ADC 0, input 1.
I
CAP0[2] — Capture input for Timer 0, channel 2.
O
MAT0[2] — Match output for Timer 0, channel 2.
P0[29]/AD0[2]/
2[4]
CAP0[3]/MAT0[3]
I/O
P0[29] — General purpose input/output digital pin (GPIO).
I
AD0[2] — ADC 0, input 2.
I
CAP0[3] — Capture input for Timer 0, channel 3.
O
MAT0[3] — Match output for Timer 0, channel 3.
P0[30]/AD0[3]/
3[4]
EINT3/CAP0[0]
I/O
P0[30] — General purpose input/output digital pin (GPIO).
I
AD0[3] — ADC 0, input 3.
I
EINT3 — External interrupt 3 input.
I
CAP0[0] — Capture input for Timer 0, channel 0.
P0[31]
5[6]
O
P0[31] — General purpose output only digital pin.
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 and 18 through 24 of
port 1 are not available.
P1[16]
4[6]
I/O
P1[16] — General purpose input/output digital pin (GPIO).
P1[17]
100[6]
I/O
P1[17] — General purpose input/output digital pin (GPIO).
P1[25]/EXTIN0
16[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
12[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
90[6]
I/O
P1[27] — General purpose input/output digital pin (GPIO).
O
TDO — Test Data out for JTAG interface.
P1[28]/TDI
86[6]
I/O
P1[28] — General purpose input/output digital pin (GPIO).
I
TDI — Test Data in for JTAG interface.
P1[29]/TCK
82[6]
I/O
P1[29] — General purpose input/output digital pin (GPIO).
I
TCK — Test Clock for JTAG interface.
P1[30]/TMS
78[6]
I/O
P1[30] — General purpose input/output digital pin (GPIO).
I
TMS — Test Mode Select for JTAG interface.
P1[31]/TRST
8[6]
I/O
P1[31] — General purpose input/output digital pin (GPIO).
I
TRST — Test Reset for JTAG interface.
LPC2157_2158_1
Product data sheet
Rev. 01 — 15 October 2008
© NXP B.V. 2008. All rights reserved.
8 of 45
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