OM13013,598 NXP Semiconductors, OM13013,598 Datasheet - Page 295
OM13013,598
Manufacturer Part Number
OM13013,598
Description
BOARD DEMO IAR LPC1227 JLINKLITE
Manufacturer
NXP Semiconductors
Series
-r
Specifications of OM13013,598
Design Resources
LPC122x-SK Brd Schematic
Processor To Be Evaluated
LPC1227
Processor Series
LPC122x
Data Bus Width
32 bit
Interface Type
UART, SSP, SPI, I2C
Cpu Core
ARM Cortex-M0
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Operating Supply Voltage
3 V to 3.6 V
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
568-6885
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19.1 How to read this chapter
19.2 Basic configuration
19.3 Features
19.4 General description
19.5 Pin description
UM10441
User manual
The ADC is available on all LPC12xx parts.
Clocks and power to the ADC are controlled by the SYSAHBCLKDIV register (see
Table
(Table
For connecting to the DMA, see
The ADC can be powered down at run-time through the PDRUNCFG register, see
Table
Basic clocking for the A/D converters is provided by the system clock. A programmable
divider is included in each ADC to scale this clock to the 9 MHz (max) clock needed by the
successive approximation process. A fully accurate conversion requires 35 of these
clocks.
Table 276
Table 276. ADC pin description
Pin
AD[7:0]
V
•
•
•
•
•
•
•
•
DD(3V3)
UM10441
Chapter 19: LPC122x ADC
Rev. 1 — 15 February 2011
10-bit successive approximation Analog-to-Digital Converter (ADC).
Input multiplexing among 8 pins.
Power-down mode.
Measurement range 0 to 3 V.
10-bit conversion time of 257 kHz.
Burst conversion mode for single or multiple inputs.
Optional conversion on transition on input pin or Timer Match signal.
Individual result registers for each A/D channel to reduce interrupt overhead.
20). This clock can be disabled through bit 14 in the AHBCLKCTRL register
50.
21) for power savings.
gives a brief summary of each of ADC related pins.
Type
Input
Input
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 15 February 2011
Description
Analog Inputs. The A/D converter cell can measure the voltage on any
of these input signals. The input signal must no exceed V
3.3 V).
V
REF
; Reference voltage.
Section
19.7.3.
© NXP B.V. 2011. All rights reserved.
User manual
REF
(typically
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