LPC178X-7X Datasheet, PDF (31/120 Pages) NXP Semiconductors – 32-bit ARM Cortex-M3 microcontroller; up to 512 kB flash

NXP Semiconductors
LPC178x/7x
32-bit ARM Cortex-M3 microcontroller
Table 3. Pin description …continued
Not all functions are available on all parts. See Table 2 (Ethernet, USB, LCD, QEI, SD/MMC, DAC pins) and Table 7 (EMC
pins).
Symbol
Description
P4[19]
P4[20]
P4[21]
P4[22]
P4[23]
P4[24]
P4[25]
P4[26]
P4[27]
P4[28]
111 P16 M14 -
109 R17 - -
[3] _{I; I/O}
PU _I/O
[3] _{I; I/O}
PU _I/O
I/O
115 M15 -
I/O
-
[3] _{I; I/O}
PU _I/O
I/O
I/O
123 K14 -
-
[3] _{I; I/O}
PU _I/O
O
I/O
129 J15 -
-
[3] _{I; I/O}
PU _I/O
I
I/O
183 B8 C8 127 ^[3] I; I/O
PU _O
179 B9 D9 124 ^[3] I; I/O
PU _O
119 L15 K13 -
[3] _{I; I/O}
PU _O
139 G15 F14 -
[3] _{I; I/O}
PU _O
170 C11 D10 118 ^[3] I; I/O
PU _O
O
O
-
O
O
O
P4[19] — General purpose digital input/output pin.
EMC_A[19] — External memory address line 19.
P4[20] — General purpose digital input/output pin.
EMC_A[20] — External memory address line 20.
I2C2_SDA — I²C2 data input/output (this pin does not use a
specialized I2C pad).
SSP1_SCK — Serial Clock for SSP1.
P4[21] — General purpose digital input/output pin.
EMC_A[21] — External memory address line 21.
I2C2_SCL — I²C2 clock input/output (this pin does not use a
specialized I2C pad).
SSP1_SSEL — Slave Select for SSP1.
P4[22] — General purpose digital input/output pin.
EMC_A[22] — External memory address line 22.
U2_TXD — Transmitter output for UART2.
SSP1_MISO — Master In Slave Out for SSP1.
P4[23] — General purpose digital input/output pin.
EMC_A[23] — External memory address line 23.
U2_RXD — Receiver input for UART2.
SSP1_MOSI — Master Out Slave In for SSP1.
P4[24] — General purpose digital input/output pin.
EMC_OE — LOW active Output Enable signal.
P4[25] — General purpose digital input/output pin.
EMC_WE — LOW active Write Enable signal.
P4[26] — General purpose digital input/output pin.
EMC_BLS0 — LOW active Byte Lane select signal 0.
P4[27] — General purpose digital input/output pin.
EMC_BLS1 — LOW active Byte Lane select signal 1.
P4[28] — General purpose digital input/output pin.
EMC_BLS2 — LOW active Byte Lane select signal 2.
U3_TXD — Transmitter output for UART3.
T2_MAT0 — Match output for Timer 2, channel 0.
R — Function reserved.
LCD_VD[6] — LCD data.
LCD_VD[10] — LCD data.
LCD_VD[2] — LCD data.
LPC178X_7X
Preliminary data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 1 May 2012
© NXP B.V. 2012. All rights reserved.
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