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AT42QT1111-AU Datasheet(PDF) 15 Page - ATMEL Corporation |
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AT42QT1111-AU Datasheet(HTML) 15 Page - ATMEL Corporation |
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15 / 50 page  15 AT42QT1111-MU / AT42QT1111-AU [DATASHEET] 9571C–AT42–05/2013 Figure 4-8. Positive Recalibration Delay Get Instruction – CRC Enabled 4.1.6 Quick SPI Mode 4.1.6.1 Introduction In Quick SPI Mode, the QT1111 sends a 7-byte key report at each exchange. No host commands are required over SPI in this mode; the host clocks the data bytes out in sequence. Quick SPI mode is enabled by setting the SPI_EN bit in the Comms Options setup byte (see Section 7.5 on page 29). 4.1.6.2 Quick SPI Report The 7 report bytes are in the format given in Table 4-1. where: Host (Sends on MOSI) Command: 0xD5 Null: 0x00 Null: 0x00 “Get” CRC: 0xA3 Simultaneous Transmission Command CRC: 0x68 Response: 0x68 (Expected Command CRC) “Get” Data: 0x0C (Positive Recalibration Delay) Response: 0x55 ( Idle” Fresh Command) “ – Device (Responds on MISO) Table 4-1. Device Status Report Format Byte Description Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 0 Counter Counter – increments from 0 to 255 1 Detect status, channels 0 – 3 Channel 3 Channel 2 Channel 1 Channel 0 2 Detect status, channels 4 – 7 Channel 7 Channel 6 Channel 5 Channel 4 3 Detect status, channels 8 – 10 Reserved Channel 10 Channel 9 Channel 8 4 Error status, channels 0 – 3 Channel 3 Channel 2 Channel 1 Channel 0 5 Error status, channels 4 – 7 Channel 7 Channel 6 Channel 5 Channel 4 6 Error status, channels 8 – 10 Reserved Channel 10 Channel 9 Channel 8 |
Similar Part No. - AT42QT1111-AU_14 |
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Similar Description - AT42QT1111-AU_14 |
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