![NXP Semiconductors LPC43Sxx Скачать руководство пользователя страница 1327](http://html1.mh-extra.com/html/nxp-semiconductors/lpc43sxx/lpc43sxx_user-manual_17218271327.webp)
UM10503
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2015. All rights reserved.
User manual
Rev. 2.1 — 10 December 2015
1327 of 1441
NXP Semiconductors
UM10503
Chapter 47: LPC43xx/LPC43Sxx 10-bit ADC0/1
•
For the ADC0 and ADC1 inputs that are multiplexed with digital functions, the pins
need to be configured using the ENAIO0/1 registers (see
and
•
The ADC1 channel 7 is connected to the bandgap reference (see
47.3 Features
•
10 bit successive approximation analog to digital converter.
•
Input multiplexing among 8 pins.
•
Power-down mode.
•
Measurement range 0 to 3.3 V.
•
10-bit conversion time = 2.45
s.
•
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.\
•
Connected to bandgap reference (see
47.4 General description
Basic clocking for the A/D converters is provided by the APB clocks
(CLK_APB4_ADC0/1). A programmable divider is included in each converter to scale this
clock to the 4.5 MHz (max) clock needed by the successive approximation process. A fully
accurate conversion requires 11 of these clocks.
47.5 Pin description
gives a brief summary of each of ADC related pins.
Table 1110. ADC0/1 clocking and power control
Base clock
Branch clock
Operating
frequency
Notes
ADC0 clock
BASE_APB3_CLK CLK_APB3_ADC0 up to 204 MHz For register interface and
ADC0 conversion rate.
ADC1 clock
BASE_APB3_CLK CLK_APB3_ADC1 up to 204 MHz For register interface and
ADC1 conversion rate.