LPC540xx
NXP Semiconductors
32-bit ARM Cortex-M4 microcontroller
Table 4.
Symbol
Pin description …continued
Description
[2]
PIO0_6/
TDO
A4 A5 191 90
PU; Z I/O PIO0_6 — General-purpose digital input/output pin. In
boundary scan mode: TDO (Test Data Out).
Remark: The state of this pin at Reset in conjunction with
PIO0_4 and PIO0_5 will determine the boot source for the
part or if ISP handler is invoked. See the Boot Process
chapter in UM11060 for more details.
I/O FC3_SCK — Flexcomm 3: USART or SPI clock.
I
CT3_CAP1 — Capture input 1 to Timer 3.
CT4_MAT0 — Match output 0 from Timer 4.
SCT0_GPI6 — Pin input 6 to SCTimer/PWM.
R — Reserved.
O
I
I/O EMC_D[4] — External Memory interface data [4].
ENET_RX_DV — Ethernet receive data valid.
I
[2]
PIO0_7
F9 H12 125 61
PU; Z I/O PIO0_7 — General-purpose digital input/output pin.
I/O FC3_RTS_SCL_SSEL1 — Flexcomm 3: USART
request-to-send, I2C clock, SPI slave select 1.
O
SD_CLK — SD/MMC clock.
I/O FC5_SCK — Flexcomm 5: USART or SPI clock.
I/O FC1_SCK — Flexcomm 1: USART or SPI clock.
O
PDM1_CLK — Clock for PDM interface 1, for digital
microphone.
I/O EMC_D[5] — External Memory interface data [5].
I
ENET_RX_CLK — Ethernet Receive Clock (MII interface)
or Ethernet Reference Clock (RMII interface).
[2]
PIO0_8
E9 H10 133 64
PU; Z I/O PIO0_8 — General-purpose digital input/output pin.
I/O FC3_SSEL3 — Flexcomm 3: SPI slave select 3.
I/O SD_CMD — SD/MMC card command I/O.
I/O FC5_RXD_SDA_MOSI — Flexcomm 5: USART receiver,
I2C data I/O, SPI master-out/slave-in data.
O
I
SWO — Serial Wire Debug trace output.
PDM1_DATA — Data for PDM interface 1 (digital
microphone).
I/O EMC_D[6] — External Memory interface data [6].
LPC540xx
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© NXP Semiconductors N.V. 2018. All rights reserved.
Product data sheet
Rev. 1.8 — 22 June 2018
15 of 168
NXP [ NXP ]
