OM13008,598 NXP Semiconductors, OM13008,598 Datasheet - Page 58

• Manufacturer Part Number: OM13008,598
• Description: BOARD LPC XPRESSO LPC122X
• Manufacturer: NXP Semiconductors
• Series: LPCXpressor

Specifications of OM13008,598

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 568-6642; OM13008

6.1 How to read this chapter
6.2 Features
6.3 General description
UM10441
User manual
6.3.1 Pin function
6.3.2 Pin mode
Each pin has one IOCON register assigned. IOCON registers for pins not available are
reserved (see
available on 64-pin packages.
Table 59.
The I/O configuration registers control the electrical characteristics of the pads. The
following features are programmable:
The FUNC bits in the IOCON registers can be set to GPIO (FUNC = 000) or to a
peripheral function. If the pins are configured as GPIO pins, the DIR registers determine
whether the pin is configured as an input or output (see
function, the pin direction is controlled automatically depending on the pin’s functionality.
The GPIOnDIR registers have no effect for peripheral functions.
The MODE bit in the IOCON register allows enabling or disabling an on-chip pull-up
resistor for each pin. By default all pull-up resistors are enabled except for the I
pins PIO0_10 and PIO0_11, which do not have a programmable pull-up resistor.
Package GPIO0
LQFP48
LQFP64
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•
•
•
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UM10441
Chapter 6: LPC122x I/O configuration (IOCONFIG)
Rev. 1.1 — 10 March 2011
Pin function
Pin mode: Internal pull-up resistor enable/disable
Pin drive
Analog input or digital mode for pads hosting the ADC inputs
I
True, programmable open-drain mode for I
2
C-bus mode or GPIO mode for pads hosting the I
PIO0_0 to PIO0_31 PIO1_0 to PIO1_6 -
PIO0_0 to PIO0_31 PIO1_0 to PIO1_6 PIO2_0 to PIO2_15
Available GPIO pins/IOCON registers
Table
All information provided in this document is subject to legal disclaimers.
59). IOCON registers controlling pins of GPIO port 2 are only
Rev. 1.1 — 10 March 2011
GPIO1
2
C-bus pins
GPIO2
2
C-bus interface
Table
128). For any peripheral
Total GPIO pins/
OCON registers
39
55
© NXP B.V. 2011. All rights reserved.
User manual
2
C-bus
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