at42qt1481 ATMEL Corporation, at42qt1481 Datasheet - Page 71

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

9621B–AT42–06/11
6
Appendix A
Appendix B
Specifications ......................................................................................... 59
Contents .................................................................................................. 68
Associated Documents .......................................................................... 71
Revision History...................................................................................... 71
5.18
5.19
5.20
5.21
5.22
5.23
5.24
5.25
5.26
5.27
5.28
5.29
5.30
5.31
5.32
5.33
5.34
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
Lower Signal Limit – LSL .................................................................................48
Key Gain Test Threshold – KGTT ...................................................................48
STATUS Output – STS ....................................................................................49
Awake Time – AWAKE ....................................................................................50
Drift Hold Time – DHT .....................................................................................50
Frequency Hopping Mode – FHM ...................................................................51
Frequency 0 – FREQ0 .....................................................................................51
Frequency1 – FREQ1 ......................................................................................51
Frequency2 – FREQ2 ......................................................................................52
Noise Threshold – NSTHR ..............................................................................52
Noise Integrator Limit – NIL .............................................................................52
Calibrated Frequency Offset – CFO_1 and CFO_2 ........................................52
Setups CRC – SCRC ......................................................................................53
Setups Block ....................................................................................................53
STS Bits ...........................................................................................................55
Key Mapping ....................................................................................................56
Setups Block Summary ..................................................................................57
Absolute Maximum Specifications ...................................................................59
Recommended Operating Conditions .............................................................59
DC Specifications ............................................................................................59
Timing Specifications ......................................................................................60
Mechanical Dimensions ...................................................................................61
Marking ............................................................................................................62
Part Number ....................................................................................................62
Moisture Sensitivity Level (MSL) .....................................................................62
16-bit CRC Algorithm ....................................................... 63
DEBUG Output .................................................................. 64
AT42QT1481
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