參數(shù)資料
型號(hào)： AT42QT1111-AU
廠商： ATMEL CORP
元件分類： 速度傳感器和接近開關(guān)
英文描述： PROXIMITY SENSOR-CAPACITIVE, 0-5V, SQUARE, SURFACE MOUNT
封裝： 7 X 7 MM, 1 MM HEIGHT, 0.80 MM PITCH, ROHS COMPLIANT, PLASTIC, MS-026ABA, TQFP-32
文件頁數(shù)： 7/50頁
文件大?。?/td> 637K
代理商： AT42QT1111-AU
15
9571B–AT42–08/10
AT42QT1111-MU/AT42QT1111-AU
4.1.5.2
Get Instructions
Get instructions are instructions that read the data from a location in the QT1111 memory map.
Figure 4-7.
Positive Recalibration Delay Get Instruction – CRC Disabled
The host sends the appropriate “Get” command, followed by a “Null” byte. The QT1111 returns
the contents of the addressed memory location.
Figure 4-7 on page 15 shows the exchange for a report on the positive recalibration delay
(assuming that the data byte is 0x0C).
With CRC Enabled, this exchange takes 4 bytes, with a command CRC transmitted by the host
and a report CRC returned by the QT1111 (see Figure 4-8).
Figure 4-8.
Positive Recalibration Delay Get Instruction – CRC Enabled
Host (Sends on MOSI)
Command: 0xD5
Null: 0x00
“Get” Data: 0x0C (Positive Recalibration Delay)
Simultaneous
Transmission
Response: 0x55 ( Idle”
Fresh Command)
“
–
Device (Responds on MISO)
Host (Sends on MOSI)
Command: 0xD5
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)
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