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BU21029GUL Scheda tecnica(PDF) 7 Page - Rohm |
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BU21029GUL Scheda tecnica(HTML) 7 Page - Rohm |
7 / 29 page 7/26 Datasheet Datasheet BU21029GUL TSZ02201-0Y1Y0F300120-1-2 © 2011 ROHM Co., Ltd. All rights reserved. 11.Nov.2013 Rev.002 www.rohm.co.jp TSZ22111・15・001 CF= 0000 : Automatic scan This makes BU21029GUL periodically and automatically scan the screen and convert data upon detecting touch. When the device cannot detect touch, it stops and stays in power down state until it detects the 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 = 0010 This converts the voltage impressed to AUX. After the conversion has been completed, the device is powered down according to the PDM setting. CF= 0100 : Free scan mode In Free Scan Mode, the driver state (X+, X-, Y+, Y-) and conversion input (X+, X-, Y+, Y-, AUX) can be selected through register settings. CF= 0101 : Calibration This calibrates the parameters for dual touch detection. To activate the dual touch function, setting of CF to 0101 and execution of the calibration command should be done after power-on. CF= 1000, 1001, 1010: Drivers status control This activates the analog circuit and panel driver corresponding to each command. BU21029GUL remains in this state until it receives another SCAN instruction or until "STP" is set. CF= 1100, 1101, 1110: Manual scan This converts coordinates that correspond to each command. BU21029GUL goes to power-down state after a complete conversion if "PDM" is set to "0". Otherwise, it stays at power-on state. CF =0011, 1111 Reserved. Bit D2:CMSK 0=Executes convert function. 1=Reads the convert result Bit D1:PDM Power Down Control 0= Powers down the device after converter function stops 1= Keeps power on after converter function stops Bit D0:STP 1= Aborts currently running conversion and changes the state to power-down (STP is automatically set to “0”.) |
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