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AR1010-I/ML 数据表(PDF) 23 Page - Microchip Technology

部件名 AR1010-I/ML
功能描述  Resistive Touch Screen Controller
PDF  70 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

AR1010-I/ML 数据表(HTML) 23 Page - Microchip Technology

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 2009-2012 Microchip Technology Inc.
Preliminary
DS41393B-page 23
AR1000 SERIES RESISTIVE TOUCH SCREEN CONTROLLER
5.5
Command Protocol
The AR1021 controller receives commands from the
host as follows:
• The host clocks the bytes of a command to the
AR1021 controller.
• The AR1021 controller asserts the SIQ interrupt
pin high when it is ready with a response to the
command sent by the host.
• The host clocks out the bytes of the command
response from the AR1021 controller.
• The AR1021 controller clears the SIQ interrupt pin
low, after the first byte of the command response
has been clocked out by the host.
The communication protocol for the host sending the
ENABLE_TOUCH command to the AR1021 controller is
shown below in Figure 5-2.
FIGURE 5-2:
SPI TIMING DIAGRAM – COMMAND PROTOCOL (ENABLE_TOUCH)
5.6
SPI Bit Timing – General
General timing waveforms are shown below in
Figure 5-3.
FIGURE 5-3:
SPI GENERAL BIT TIMING WAVEFORM



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