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EKTF6708 Datasheet(PDF) 102 Page - ELAN Microelectronics Corp |
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EKTF6708 Datasheet(HTML) 102 Page - ELAN Microelectronics Corp |
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102 / 158 page  eKTF6708 8-Bit Microcontroller 92 IC Product Specification (V1.2) 03.12.2020 (This specification is subject to change without prior notice) Registers for Touch key Group A : R_BANK Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Bank 2 0x05 TKAPC TKAEP7 TKAEP6 TKAEP5 TKAEP4 TKAEP3 TKAEP2 TKAEP1 TKAEP0 R/W R/W R/W R/W R/W R/W R/W R/W Bank 2 0x07 TKASCR TKAEN - - - - TKASW2 TKASW1 TKASW0 R/W - - - - R/W R/W R/W Bank 2 0x12 TKAH TKA[15] TKA[14] TKA[13] TKA[12] TKA[11] TKA[10] TKA[9] TKA[8] R R R R R R R R Bank 2 0x13 TKAL TKA[7] TKA[6] TKA[5] TKA[4] TKA[3] TKA[2] TKA[1] TKA[0] R R R R R R R R Bank 2 0x17 TKA1WBH TA1WB[15] TA1WB[14] TA1WB[13] TA1WB[12] TA1WB[11] TA1WB[10] TA1WB[9] TA1WB[8] R/W R/W R/W R/W R/W R/W R/W R/W Bank 2 0x18 TKA1WBL TA1WB[7] TA1WB[6] TA1WB[5] TA1WB[4] TA1WB[3] TA1WB[2] TA1WB[1] TA1WB[0] R/W R/W R/W R/W R/W R/W R/W R/W Bank 2 0x19 TKA1WR TA1WR[7] TA1WR[6] TA1WR[5] TA1WR[4] TA1WR[3] TA1WR[2] TA1WR[1] TA1WR[0] R/W R/W R/W R/W R/W R/W R/W R/W Bank 2 0x1A TKA2WBH TA2WB[15] TA2WB[14] TA2WB[13] TA2WB[12] TA2WB[11] TA2WB[10] TA2WB[9] TA2WB[8] R/W R/W R/W R/W R/W R/W R/W R/W Bank 2 0x1B TKA2WBL TA2WB[7] TA2WB[6] TA2WB[5] TA2WB[4] TA2WB[3] TA2WB[2] TA2WB[1] TA2WB[0] R/W R/W R/W R/W R/W R/W R/W R/W Bank 2 0x1C TKA2WR TA2WR[7] TA2WR[6] TA2WR[5] TA2WR[4] TA2WR[3] TA2WR[2] TA2WR[1] TA2WR[0] R/W R/W R/W R/W R/W R/W R/W R/W 6.7.2 Touch Key Operation When a finger touches, the capacitance of the pad will increase. By using sensing and calculate the capacitance variation to change to the counter data, user can set the sensed control register to get apposite counter data. touch actions can be sensed by measuring these counter data changes. Each touch key group supports 8 detect pins. It senses pins by selecting TKx Select Pin Register (TKASCR). User select the Touch pin one by one, then set the Start bit (TKAEN) to detect the capacitance. |
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