Datasheet

LPC2420_60 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 6.2 — 16 October 2013 23 of 87
NXP Semiconductors
LPC2420/2460
Flashless 16-bit/32-bit microcontroller
P4[17]/A17 104
[1]
P14
[1]
I/O P4[17] — General purpose digital input/output pin.
I/O A17 — External memory address line 17.
P4[18]/A18 105
[1]
P15
[1]
I/O P4[18] — General purpose digital input/output pin.
I/O A18 — External memory address line 18.
P4[19]/A19 111
[1]
P16
[1]
I/O P4[19] — General purpose digital input/output pin.
I/O A19 — External memory address line 19.
P4[20]/A20/
SDA2/SCK1
109
[1]
R17
[1]
I/O P4[20] — General purpose digital input/output pin.
I/O A20 — External memory address line 20.
I/O SDA2 — I
2
C2 data input/output (this is not an open-drain pin).
I/O SCK1 — Serial Clock for SSP1.
P4[21]/A21/
SCL2/SSEL1
115
[1]
M15
[1]
I/O P4[21] — General purpose digital input/output pin.
I/O A21 — External memory address line 21.
I/O SCL2 — I
2
C2 clock input/output (this is not an open-drain pin).
I/O SSEL1 — Slave Select for SSP1.
P4[22]/A22/
TXD2/MISO1
123
[1]
K14
[1]
I/O P4[22] — General purpose digital input/output pin.
I/O A22 — External memory address line 22.
O TXD2 — Transmitter output for UART2.
I/O MISO1 — Master In Slave Out for SSP1.
P4[23]/A23/
RXD2/MOSI1
129
[1]
J15
[1]
I/O P4[23] — General purpose digital input/output pin.
I/O A23 — External memory address line 23.
I RXD2 — Receiver input for UART2.
I/O MOSI1 — Master Out Slave In for SSP1.
P4[24]/OE
183
[1]
B8
[1]
I/O P4[24] — General purpose digital input/output pin.
O OE
— LOW active Output Enable signal.
P4[25]/WE
179
[1]
B9
[1]
I/O P4[25] — General purpose digital input/output pin.
O WE
— LOW active Write Enable signal.
P4[26]/BLS0
119
[1]
L15
[1]
I/O P4[26] — General purpose digital input/output pin.
O BLS0
— LOW active Byte Lane select signal 0.
P4[27]/BLS1
139
[1]
G15
[1]
I/O P4[27] — General purpose digital input/output pin.
O BLS1
— LOW active Byte Lane select signal 1.
P4[28]/BLS2
/
MAT2[0]/TXD3
170
[1]
C11
[1]
I/O P4 [28] — General purpose digital input/output pin.
O BLS2
— LOW active Byte Lane select signal 2.
O MAT2[0] — Match output for Timer 2, channel 0.
O TXD3 — Transmitter output for UART3.
P4[29]/BLS3
/
MAT2[1]/RXD3
176
[1]
B10
[1]
I/O P4[29] — General purpose digital input/output pin.
O BLS3
— LOW active Byte Lane select signal 3.
O MAT2[1] — Match output for Timer 2, channel 1.
I RXD3 — Receiver input for UART3.
P4[30]/CS0
187
[1]
B7
[1]
I/O P4[30] — General purpose digital input/output pin.
O CS0
— LOW active Chip Select 0 signal.
Table 4. Pin description …continued
Symbol Pin Ball Type Description