User manual

LPC4357 Developer’s Kit - User’s Guide
Page 41
Copyright 2013 © Embedded Artists AB
4.27 Usage of CPU Pins
Almost all pins of the LPC4357 are directly available on the expansion connectors. Only in a few cases
are pins used for dedicated functionality like Ethernet interface and chip select signals. Such pins are
not available on the expansion connector. The table below lists all pins and their possible restrictions.
OEM Base
Board signal
name
LPC4357 Pin
(OEM Board
signal name)
Usage
GPIO0
P7_7
LCDPWR signal to LCD expansion connector.
GPIO1
P7_0
LCDLE signal to LCD expansion connector.
GPIO2
P4_7
LCDDCLK signal to LCD expansion connector.
Connects to trace connector but not relevant for LPC4357.
GPIO3
P4_5
LCDFP signal to LCD expansion connector.
Connects to trace connector but not relevant for LPC4357.
GPIO4
P4_6
LCDENAB signal to LCD expansion connector.
Connects to trace connector but not relevant for LPC4357.
GPIO5
P7_6
LCDLP signal to LCD expansion connector.
Connects to trace connector but not relevant for LPC4357.
GPIO6
P8_7
LCD databit 4.
Connects to trace connector but not relevant for LPC4357.
GPIO7
P8_6
LCD databit 5.
GPIO8
P8_5
LCD databit 6.
GPIO9
P8_4
LCD databit 7.
GPIO10
ISP_EN
Connected to push-button (for enabling bootloader during
reset). Also connects to LED (active low).
Connects to USB-to-serial bridge (for automatic ISP
functionality)
GPIO11
PF_4
LCD clock input, an external clock signal can be feed to this pin.
GPIO12
P7_2
LCD databit 18
GPIO13
P7_1
LCD databit 19
GPIO14
P3_1
Connects to RD1 for CAN channel #1, can also connect to IrDA
transceiver.
IrDA functionality is not supported by LPC4357 OEM board
pinning.
GPIO15
P3_2
Connects to TD1 for CAN channel #1, can also connect to IrDA
transceiver.
IrDA functionality is not supported by LPC4357 OEM board
pinning.
GPIO16
PF_10
Connects to USB-to-serial bridge (TxD on USART #0).
GPIO17
PF_11
Connects to USB-to-serial bridge (RxD on USART #0).
GPIO18
P4_1
LCD databit 0, can also be connected to RD2 for CAN channel