Datasheet

LPC81XM All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet Rev. 4.3 — 22 April 2014 11 of 76
NXP Semiconductors
LPC81xM
32-bit ARM Cortex-M0+ microcontroller
U0_SCLK I/O Serial clock input/output for USART0 in synchronous mode.
U1_TXD O Transmitter output for USART1.
U1_RXD I Receiver input for USART1.
U1_RTS
O Request To Send output for USART1.
U1_CTS
I Clear To Send input for USART1.
U1_SCLK I/O Serial clock input/output for USART1 in synchronous mode.
U2_TXD O Transmitter output for USART2.
U2_RXD I Receiver input for USART2.
U2_RTS
O Request To Send output for USART2.
U2_CTS
I Clear To Send input for USART2.
U2_SCLK I/O Serial clock input/output for USART2 in synchronous mode.
SPI0_SCK I/O Serial clock for SPI0.
SPI0_MOSI I/O Master Out Slave In for SPI0.
SPI0_MISO I/O Master In Slave Out for SPI0.
SPI0_SSEL I/O Slave select for SPI0.
SPI1_SCK I/O Serial clock for SPI1.
SPI1_MOSI I/O Master Out Slave In for SPI1.
SPI1_MISO I/O Master In Slave Out for SPI1.
SPI1_SSEL I/O Slave select for SPI1.
CTIN_0 I SCT input 0.
CTIN_1 I SCT input 1.
CTIN_2 I SCT input 2.
CTIN_3 I SCT input 3.
CTOUT_0 O SCT output 0.
CTOUT_1 O SCT output 1.
CTOUT_2 O SCT output 2.
CTOUT_3 O SCT output 3.
I2C0_SCL I/O I
2
C-bus clock input/output (open-drain if assigned to pin PIO0_10).
High-current sink only if assigned to PIO0_10 and if I
2
C Fast-mode
Plus is selected in the I/O configuration register.
I2C0_SDA I/O I
2
C-bus data input/output (open-drain if assigned to pin PIO0_11).
High-current sink only if assigned to pin PIO0_11 and if I
2
C
Fast-mode Plus is selected in the I/O configuration register.
ACMP_O O Analog comparator digital output.
CLKOUT O Clock output.
GPIO_INT_BMAT O Output of the pattern match engine.
Table 5. Movable functions (assign to pins PIO0_0 to PIO_17 through switch matrix)
Function name Type Description