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CAP1106 Datasheet(PDF) 37 Page - Microchip Technology |
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CAP1106 Datasheet(HTML) 37 Page - Microchip Technology |
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37 / 48 page  2015 Microchip Technology Inc. DS00001624B-page 37 CAP1106 The Sensor Input Base Count registers store the calibrated “Not Touched” input value from the capacitive touch sensor inputs. These registers are periodically updated by the re-calibration routine. The routine uses an internal adder to add the current count value for each reading to the sum of the previous readings until sample size has been reached. At this point, the upper 16 bits are taken and used as the Sensor Input Base Count. The internal adder is then reset and the re-calibration routine continues. The data presented is determined by the BASE_SHIFT[3:0] bits (see Section 6.5). 6.25 Sensor Input Calibration Registers The Sensor Input Calibration registers hold the 10-bit value that represents the last calibration value. 6.26 Product ID Register The Product ID register stores a unique 8-bit value that identifies the device. 6.27 Manufacturer ID Register The Vendor ID register stores an 8-bit value that represents Microchip. TABLE 6-44: SENSOR INPUT CALIBRATION REGISTERS ADDR Register R/W B7 B6 B5 B4 B3 B2 B1 B0 Default B1h Sensor Input 1 Calibration R CAL1_9 CAL1_8 CAL1_7 CAL1_6 CAL1_5 CAL1_4 CAL1_3 CAL1_2 00h B2h Sensor Input 2 Calibration R CAL2_9 CAL2_8 CAL2_7 CAL2_6 CAL2_5 CAL2_4 CAL2_3 CAL2_2 00h B3h Sensor Input 3 Calibration R CAL3_9 CAL3_8 CAL3_7 CAL3_6 CAL3_5 CAL3_4 CAL3_3 CAL3_2 00h B4h Sensor Input 4 Calibration R CAL4_9 CAL4_8 CAL4_7 CAL4_6 CAL4_5 CAL4_4 CAL4_3 CAL4_2 00h B5h Sensor Input 5 Calibration R CAL5_9 CAL5_8 CAL5_7 CAL5_6 CAL5_5 CAL5_4 CAL5_3 CAL5_2 00h B6h Sensor Input 6 Calibration R CAL6_9 CAL6_8 CAL6_7 CAL6_6 CAL6_5 CAL6_4 CAL6_3 CAL6_2 00h B9h Sensor Input Calibration LSB 1 R CAL4_1 CAL4_0 CAL3_1 CAL3_0 CAL2_1 CAL2_0 CAL1_1 CAL1_0 00h BAh Sensor Input Calibration LSB 2 R - - - - CAL6_1 CAL6_0 CAL5_1 CAL5_0 00h TABLE 6-45: PRODUCT ID REGISTER ADDR R/W Register B7 B6 B5 B4 B3 B2 B1 B0 Default FDh R Product ID CAP1106 01010101 55h TABLE 6-46: VENDOR ID REGISTER ADDR R/W Register B7 B6 B5 B4 B3 B2 B1 B0 Default FEh R Manufacturer ID 01 011101 5Dh |
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