LPC2131_32_34_36_38 NXP Semiconductors, LPC2131_32_34_36_38 Datasheet - Page 16

• Manufacturer Part Number: LPC2131_32_34_36_38
• Description: The LPC2131/32/34/36/38 microcontrollers are based on a 16/32-bit ARM7TDMI-S CPUwith real-time emulation and embedded trace support, that combine the microcontrollerwith 32 kB, 64 kB, 128 kB, 256 kB and 512 kB of embedded high-speed flash memory
• Manufacturer: NXP Semiconductors

NXP Semiconductors
LPC2131_32_34_36_38
Product data sheet
6.7.1 Features
6.6 Pin connect block
6.7 General purpose parallel I/O and Fast I/O
Table 4.
The pin connect block allows selected pins of the microcontroller to have more than one
function. Configuration registers control the multiplexers to allow connection between the
pin and the on chip peripherals. Peripherals should be connected to the appropriate pins
prior to being activated, and prior to any related interrupt(s) being enabled. Activity of any
enabled peripheral function that is not mapped to a related pin should be considered
undefined.
Device pins that are not connected to a specific peripheral function are controlled by the
GPIO registers. Pins may be dynamically configured as inputs or outputs. Separate
registers allow setting or clearing any number of outputs simultaneously. The value of the
output register may be read back, as well as the current state of the port pins.
Block
UART1
SSP
PWM0
I
SPI0
PLL
RTC
System Control
AD0
I2C1
BOD
AD1
2
•
•
•
C0
Direction control of individual bits.
Separate control of output set and clear.
All I/O default to inputs after reset.
Interrupt sources
All information provided in this document is subject to legal disclaimers.
Flag(s)
RX Line Status (RLS)
Transmit Holding Register empty (THRE)
RX Data Available (RDA)
Character Time-out Indicator (CTI)
Modem Status Interrupt (MSI) (Available in LPC2134/36/38
only)
Match 0 to 6 (MR0, MR1, MR2, MR3, MR4, MR5, MR6)
Capture 0 to 3 (CR0, CR1, CR2, CR3)
SI (state change)
SPIF, MODF
TX FIFO at least half empty (TXRIS)
RX FIFO at least half full (RXRIS)
Receive Timeout (RTRIS)
Receive Overrun (RORRIS)
PLL Lock (PLOCK)
RTCCIF (Counter Increment), RTCALF (Alarm)
External Interrupt 0 (EINT0)
External Interrupt 1 (EINT1)
External Interrupt 2 (EINT2)
External Interrupt 3 (EINT3)
ADC 0
SI (state change)
Brown Out Detect
ADC 1 (Available in LPC2134/36/38 only)
Rev. 5.1 — 29 July 2011
…continued
LPC2131/32/34/36/38
Single-chip 16/32-bit microcontrollers
© NXP B.V. 2011. All rights reserved.
VIC channel #
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