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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MTCH6301-I/ML датащи(PDF) 10 Page - Microchip Technology |
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MTCH6301-I/ML датащи(HTML) 10 Page - Microchip Technology |
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10 / 32 page  MTCH6301 PROJECTED CAPACITIVE TOUCH CONTROLLER DS41663A-page 10 2012 Microchip Technology Inc. 5.0 COMMUNICATION PROTOCOL 5.1 Overview The MTCH6301 has two basic communication types: Touch & Gesture Protocol, and Command Protocol. Touch & Gesture Protocol Fully processed touch coordinates and gestures will be transmitted immediately as they are processed by the MTCH6301. Since it is a slave device, the INT pin will be asserted whenever one of these packets is ready for transmission. This requires the master controller to ini- tiate a READ command to receive the touch or gesture packet. Command Protocol All other commands are invoked by the I2C master controller. Commands are used for configuring and controlling the device. Master Read Details Please note that any read from the controller by the master, including both touch & gesture protocol and command protocol, will be prefixed by a single byte. This single byte denotes the number of bytes that are to be transferred. This byte is NOT represented in the tables and figures for the protocol, but is detailed in Figure 5-6 and Figure 5-7. 5.2 Touch Protocol The packet in Table 5-1 is transmitted for each touch that is present on the sensor. 5.3 Gesture Protocol The packet in Table 5-2 is transmitted whenever a ges- ture is performed on the sensor. This feature can be enabled via the Gesture Protocol register (Table 5-2). Gestures are NOT enabled by default. TABLE 5-1: TOUCH PROTOCOL Packet Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 0 1 TOUCHID<3:0> TCH(0) 0 PEN 10 X<6:0> 20 0 0 X<11:7> 30 Y<6:0> 40 0 0 Y<11:7> Legend: TOUCHID: PEN: X: Y: TCH: Touch ID (0-9) Pen State 0 = Pen Up 1 = Pen Down X Coordinate of Touch Y Coordinate of Touch Always 0, denotes a touch packet Note: For any “hold” gestures, packets are sent continuously until the gesture (touch) is released. |
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