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BU21026MUV Arkusz danych(PDF) 9 Page - Rohm |
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BU21026MUV Arkusz danych(HTML) 9 Page - Rohm |
9 / 23 page 9/19 TSZ02201-0L5L0FF00890-1-2 © 2016 ROHM Co., Ltd. All rights reserved. 4.Aug.2016 Rev.001 www.rohm.com TSZ22111 • 15 • 001 BU21026MUV Command Byte BU21026MUV has a command byte after the address byte. Upper 4 bits of the command byte select an operation code. And lower 4 bits of the command byte select an operand. Effects of the operands are changed by the operation code. Table 2. Command Byte BIT MSB 7 6 5 4 3 2 1 LSB 0 NAME C3 C2 C1 C0 O3 O2 O1 O0 BIT 7-4 : C3-0 Operation code: It is select an operation of the command. Detail is shown in Table 3. BIT 3-0 : O3-0 Operand: It has 3 types. The operand type is selected by the operation code. When the operation code is not “0101” or “1011”, the option type is 0. When it is “1011”, the option type is 1. When it is “0101” option type is 2. Detail is shown in Table 3 and 4. Table 3. Operation Code Function C3 C2 C1 C0 FUNCTION AD-INPUT X-DRIVER Y-DRIVER INT POLARITY OPERAND TYPE 0 0 0 0 Set Power OFF OFF OFF H 0 0 0 0 1 Reserved - - - - - 0 0 1 0 Measure AUX AUX OFF OFF H 0 0 0 1 1 Reserved - - - - - 0 1 0 0 Set Power OFF OFF OFF H 0 0 1 0 1 Software Reset OFF OFF OFF H 2 0 1 1 0 Reserved - - - - - 0 1 1 1 Reserved - - - - - 1 0 0 0 Drive X OFF ON OFF L 0 1 0 0 1 Drive Y OFF OFF ON L 0 1 0 1 0 Drive Z OFF XN-ON YP-ON L 0 1 0 1 1 Setup Keep Keep Keep Keep 1 1 1 0 0 Measure X YP ON OFF L 0 1 1 0 1 Measure Y XP OFF ON L 0 1 1 1 0 Measure Z1 YN XN-ON YP-ON L 0 1 1 1 1 Measure Z2 XP XN-ON YP-ON L 0 Set Power (0000, 0100) This code is used for returning to a state for touch detection without A/D conversion after sending screen drive command. After this command, A/D converted data is set to 0. Software Reset (0101) BU21026MUV resets an A/D converted data, setup settings, and state of analog blocks to the initial state. If BU21026MUV receives this code during an A/D conversion, the A/D conversion is stopped. Drive X (1000), Drive Y (1001), Drive Z (1010) BU21026MUV starts driving screen voltage by each code. PD is not effective. So, Driving is continuous until reserving another command that changes state of driving screen voltage. Measure AUX (0010), Measure X (1100), Measure Y (1101), Measure Z1 (1110), Measure Z2 (1111) BU21026MUV starts driving screen voltage and A/D conversion. A PD of operand set, state of BU21026MUV after A/D conversion is finished. Setup (1011) The setup command has a special operand (type is 1). The operand has MAF and pull-up resistor settings. Detail is shown in Table 4. |
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