at42qt1481 ATMEL Corporation, at42qt1481 Datasheet - Page 68

• Manufacturer Part Number: at42qt1481
• Description: 48-key Qmatrix Ic
• Manufacturer: ATMEL Corporation

68
AT42QT1481
Table B-3.
Offset Within Data Set
1 – 0
3 – 2
4
5
6
7
8
Format of Data Set for One Key
Description
Bits 12 – 0: Signal
Bits 15 – 13: Calibration:
Bits 12 – 0: Reference
Bit 13: 1= LSL fail
Bit 14: 1= Detect
Bit 15: 1= KGTT FMEA fail
Normal DI
Bits 3 – 0: Fast DI
Negative Detect Time. Time remaining before key is recalibrated.
Each count = 500 ms
Positive Detect Time. Time remaining before key is recalibrated.
Each count = 500 ms
Drift compensation count, range -127 to +127. Each count = 100 ms.
Recalibration occurs when the drift counter reaches the value set by
NDRIFT (negative count) or PDRIFT (positive count)
0 = Pending
1 – 4 = In progress
5 = Success
6 = Failed
9621B–AT42–06/11