AT42QT1245_14 Datasheet, PDF (49/59 Pages) ATMEL Corporation – 24-key QMatrix FMEA IEC/EN/UL60730 Touch Sensor

Cs = 4.7 nF, Rs = 470 k, Ta (Ambient Temperature)= recommended range, unless otherwise noted
Parameter
Description
Min
Typ
Max
Units
Notes
Ar
Acquisition resolution
–
10
–
bits
Rp
Internal pull-up resistors
20
–
50
k
CHANGE and DRDY pins
Rrst
Internal RST pull-up resistor
30
–
60
k
8.4 Timing Specifications
Parameter
Description
TBS
Burst spacing
Fc
Burst center frequency
Min
Typ
Max
Units
Notes
290
BL = 16
320
BL = 32
–
–
µs
All with FHM = 0
350
BL = 48
390
BL = 64
9.7
–
590
kHz
Note:
The values quoted in the above table are valid with the default settings, except where noted, and in the absence
of serial communications.
QT1245 [PRELIMINARY DATASHEET]
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9632EX–AT42–12/13