LPC540xx
NXP Semiconductors
32-bit ARM Cortex-M4 microcontroller
Table 4.
Symbol
Pin description …continued
Description
[2]
PIO4_19
-
-
14
-
PU; Z I/O PIO4_19 — General-purpose digital input/output pin.
O
O
ENET_TXD0 — Ethernet transmit data 0.
SD_CLK — SD/MMC clock.
I/O FC2_SCK — Flexcomm 2: USART or SPI clock.
I
CT4_CAP2 — Capture input 2 to Timer 4.
R — Reserved.
O
EMC_DQM[2] — External memory interface data mask 2.
[2]
PIO4_20
-
-
18
-
PU; Z I/O PIO4_20 — General-purpose digital input/output pin.
ENET_TXD1 — Ethernet transmit data 1.
O
I/O SD_CMD — SD/MMC card command I/O.
I/O FC2_RXD_SDA_MOSI — Flexcomm 2: USART receiver,
I2C data I/O, SPI master-out/slave-in data.
I
CT4_CAP3 — Capture input 3 to Timer 4.
R — Reserved.
O
EMC_DQM[3] — External memory interface data mask 3.
[2]
PIO4_21
-
-
34
-
PU; Z I/O PIO4_21 — General-purpose digital input/output pin.
O
O
ENET_TXD2 — Ethernet transmit data 2 (MII interface).
SD_POW_EN — SD/MMC card power enable.
I/O FC2_TXD_SCL_MISO — Flexcomm 2: USART transmitter,
I2C clock, SPI master-in/slave-out data.
O
CT2_MAT3 — Match output 3 from Timer 2.
R — Reserved.
I/O EMC_D[16] — External Memory interface data [16].
[2]
PIO4_22
-
-
47
-
PU; Z I/O PIO4_22 — General-purpose digital input/output pin.
O
I
ENET_TXD3 — Ethernet transmit data 3 (MII interface).
SD_CARD_DET_N — SD/MMC card detect (active low).
I/O FC2_RTS_SCL_SSEL1 — Flexcomm 2: USART
request-to-send, I2C clock, SPI slave select 1.
O
CT1_MAT3 — Match output 3 from Timer 1.
R — Reserved.
I/O EMC_D[17] — External Memory interface data [17].
LPC540xx
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© NXP Semiconductors N.V. 2018. All rights reserved.
Product data sheet
Rev. 1.8 — 22 June 2018
47 of 168
NXP [ NXP ]
