AT42QT1060_14 Datasheet, PDF (27/36 Pages) ATMEL Corporation – Six-channel QTouch Touch Sensor IC

7.4 Current Consumption
Cs = 10nF, Cx = 5 pF, Rs = 10k
LP Mode
0 (SLEEP)
1 (16 ms)
2 (32 ms)
4 (64 ms)
8 (128 ms)
16 (256 ms)
32 (512 ms)
64 (1024 ms)
5V
2.48
1745
1615
1545
1510
1500
1485
1475
Idd (µA) at Vdd =
3.3 V
1.8
1135
1065
1030
1010
1000
995
992
1.8 V
1.1
403
373
360
351
348
346
345
7.5 Timing Specifications
Parameter
Description
T_R
Response time
F_QT
Sample frequency
Power-up delay to
T_D
operate/calibration
time
F_I2C
I²C clock rate
Fm
Burst modulation,
Reset pulse width
Clock stretch
Minimum
DI setting × 16 ms
162
Typical
–
180
Maximum
LP mode +
(DI setting × 16 ms)
198
Units
Notes
ms Under host control
kHz
Modulated spread-
spectrum (chirp)
–
<230
–
ms
Can be longer if
burst is very long.
–
–
100
kHz
–
–
±8
–
%
–
5
–
–
µs
–
–
25
40
µs
–
AT42QT1060 [DATASHEET]
27
9505G–AT42–05/2013