LPC2478_1 © NXP B.V. 2008. All rights reserved.
Preliminary data sheet Rev. 01 — 11 November 2008 13 of 78
NXP Semiconductors
LPC2478
Single-chip 16-bit/32-bit microcontroller
P0[23]/AD0[0]/
I2SRX_CLK/
CAP3[0]
18
[2]
H1
[2]
I/O P0[23] — General purpose digital input/output pin.
I AD0[0] — A/D converter 0, input 0.
I/O I2SRX_CLK — Receive Clock. It is driven by the master and received by
the slave. Corresponds to the signal SCK in the
I
2
S-bus specification
.
I CAP3[0] — Capture input for Timer 3, channel 0.
P0[24]/AD0[1]/
I2SRX_WS/
CAP3[1]
16
[2]
G2
[2]
I/O P0[24] — General purpose digital input/output pin.
I AD0[1] — A/D converter 0, input 1.
I/O I2SRX_WS — Receive Word Select. It is driven by the master and
received by the slave. Corresponds to the signal WS in the
I
2
S-bus
specification
.
I CAP3[1] — Capture input for Timer 3, channel 1.
P0[25]/AD0[2]/
I2SRX_SDA/
TXD3
14
[2]
F1
[2]
I/O P0[25] — General purpose digital input/output pin.
I AD0[2] — A/D converter 0, input 2.
I/O I2SRX_SDA — Receive data. It is driven by the transmitter and read by
the receiver. Corresponds to the signal SD in the
I
2
S-bus specification
.
O TXD3 — Transmitter output for UART3.
P0[26]/AD0[3]/
AOUT/RXD3
12
[2][3]
E1
[2][3]
I/O P0[26] — General purpose digital input/output pin.
I AD0[3] — A/D converter 0, input 3.
O AOUT — D/A converter output.
I RXD3 — Receiver input for UART3.
P0[27]/SDA0 50
[4]
T1
[4]
I/O P0[27] — General purpose digital input/output pin. Output is open-drain.
I/O SDA0 — I
2
C0 data input/output. Open-drain output (for I
2
C-bus
compliance).
P0[28]/SCL0 48
[4]
R3
[4]
I/O P0[28] — General purpose digital input/output pin. Output is open-drain.
I/O SCL0 — I
2
C0 clock input/output. Open-drain output (for I
2
C-bus
compliance).
P0[29]/USB_D+1 61
[5]
U4
[5]
I/O P0[29] — General purpose digital input/output pin.
I/O USB_D+1 — USB port 1 bidirectional D+ line.
P0[30]/USB_D−162
[5]
R6
[5]
I/O P0[30] — General purpose digital input/output pin.
I/O USB_D−1 — USB port 1 bidirectional D− line.
P0[31]/USB_D+2 51
[5]
T2
[5]
I/O P0[31] — General purpose digital input/output pin.
I/O USB_D+2 — USB port 2 bidirectional D+ line.
P1[0] to P1[31] I/O Port 1: Port 1 is a 32 bit 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.
P1[0]/
ENET_TXD0
196
[1]
A3
[1]
I/O P1[0] — General purpose digital input/output pin.
O ENET_TXD0 — Ethernet transmit data 0 (RMII/MII interface).
P1[1]/
ENET_TXD1
194
[1]
B5
[1]
I/O P1[1] — General purpose digital input/output pin.
O ENET_TXD1 — Ethernet transmit data 1 (RMII/MII interface).
P1[2]/
ENET_TXD2/
MCICLK/
PWM0[1]
185
[1]
D9
[1]
I/O P1[2] — General purpose digital input/output pin.
O ENET_TXD2 — Ethernet transmit data 2 (MII interface).
O MCICLK — Clock output line for SD/MMC interface.
O PWM0[1] — Pulse Width Modulator 0, output 1.
Table 4. Pin description
…continued
Symbol Pin Ball Type Description