Datasheet

LPC178X_7X All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet Rev. 5 — 9 September 2014 14 of 122
NXP Semiconductors
LPC178x/7x
32-bit ARM Cortex-M3 microcontroller
P0[20] 120 M17 K14 83
[3]
I;
PU
I/O P0[20] — General purpose digital input/output pin.
O U1_DTR — Data Terminal Ready output for UART1. Can also
be configured to be an RS-485/EIA-485 output enable signal for
UART1.
I/O SD_CMD — Command line for SD card interface.
I/O I2C1_SCL — I
2
C1 clock input/output (this pin does not use a
specialized I2C pad).
P0[21] 118 M16 K11 82
[3]
I;
PU
I/O P0[21] — General purpose digital input/output pin.
I U1_RI — Ring Indicator input for UART1.
O SD_PWR — Power Supply Enable for external SD card power
supply.
O U4_OE — RS-485/EIA-485 output enable signal for UART4.
I CAN_RD1 — CAN1 receiver input.
I/O U4_SCLK — USART 4 clock input or output in synchronous
mode.
P0[22] 116 N17 L14 80
[6]
I;
PU
I/O P0[22] — General purpose digital input/output pin.
O U1_RTS — Request to Send output for UART1. Can also be
configured to be an RS-485/EIA-485 output enable signal for
UART1.
I/O SD_DAT[0] — Data line 0 for SD card interface.
O U4_TXD — Transmitter output for USART4 (input/output in
smart card mode).
O CAN_TD1 — CAN1 transmitter output.
P0[23] 18 H1 F5 13
[5]
I;
PU
I/O P0[23] — General purpose digital input/output pin.
I ADC0_IN[0] — A/D converter 0, input 0. When configured as an
ADC input, the digital function of the pin must be disabled.
I/O I2S_RX_SCK — Receive Clock. It is driven by the master and
received by the slave. Corresponds to the signal SCK in the
I
2
S-bus specification.
I T3_CAP0 — Capture input for Timer 3, channel 0.
P0[24] 16 G2 E1 11
[5]
I;
PU
I/O P0[24] — General purpose digital input/output pin.
I ADC0_IN[1] — A/D converter 0, input 1. When configured as an
ADC input, the digital function of the pin must be disabled.
I/O I2S_RX_WS — Receive Word Select. It is driven by the master
and received by the slave. Corresponds to the signal WS in the
I
2
S-bus specification.
I T3_CAP1 — Capture input for Timer 3, channel 1.
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
Pin LQFP208 Ball TFBGA208 Ball TFBGA180 Pin LQFP144 Reset state
[1]
Type
[2]
Description