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BU21049GUL-E2 データシート(PDF) 7 Page - Rohm

部品番号 BU21049GUL-E2
部品情報  4-wire Resistive Touch Screen Controller
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メーカー  ROHM [Rohm]
ホームページ  http://www.rohm.com
Logo ROHM - Rohm

BU21049GUL-E2 データシート(HTML) 7 Page - Rohm

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BU21049GUL
TSZ02201-0Y1Y0F300010-1-2
© 2011 ROHM Co., Ltd. All rights reserved.
31.JAN.2012 Rev.001
www.rohm.co
TSZ22111・15・001
7/23
Datasheet
Datasheet
CF= 0000 : Automatic scan
The BU21049GUL periodically scan touch screen and convert without the host processor while detecting touch. When
touch is not detected, BU21049GUL stop function and keep power down state until detect next pen-down.
The order of scan process is Z1, Z2, X and Y.
CF= 0001, 0110, 0111, 1011
No operation. (“PDM” and “STP” is valid.)
CF= 0100 : Free scan mode
Selectable the driver (X+, X-, Y+, Y-) state and convert input(X+, X-, Y+, Y-, AUX) as optionally by register setting.
CF= 0101 : Calibration
Calibrate parameter for dual touch detection. To activate dual touch function, need to set CF=0101 and execute calibration
command after power on.
CF= 1000, 1001, 1010: Drivers status control
Activate analog circuit and panel driver corresponding to each command. BU21049GUL keep this state until receive other
SCAN instruction or be set “STP”.
CF= 1100, 1101, 1110: Manual scan
Convert coordination which corresponding to each command. BU21049GUL change state to power down after complete
conversion when “PDM” is set “0”, and if “PDM” is set “1”, keep power on.
CF= 0011, 1111
Reserved.
Bit D2:CMSK
0=Execute convert function.
1=NOT execute convert function, only use for reading the convert result.
Bit D1:PDM
Power down control
0= Power down after converter function stop.
1= NOT power down after converter function stop.
Bit D0:STP
1=The BU21049GUL abort current running conversion and change state to power down. STP is automatically set “0”.


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