AT42QT1110-AZ_14 Datasheet, PDF (34/50 Pages) ATMEL Corporation – 11-key QTouch Touch Sensor IC

7.11 Addresses 7 – 8: AKS Mask
Table 7-9. AKS Mask
Address
Bit 7
Bit 6
7
8
AKS_7
AKS_6
Bit 5
AKS_5
Bit 4
AKS_4
Bit 3
AKS_3
Bit 2
AKS_10
AKS_2
Bit 1
AKS_9
AKS_1
Bit 0
AKS_8
AKS_0
AKS_n (AKS Mask): 0 = key n AKS disabled, 1 = key n AKS enabled (where n is 0–10).
These bits control which keys have AKS enabled (see Section 3. on page 9). A “1” means the corresponding key has
AKS enabled; a 0 means that the corresponding key has AKS disabled.
Default AKS mask:
0x07 and 0xFF (all keys have AKS enabled)
7.12
Addresses 9 – 15: Detect0 – Detect6 PWM
Each of the 7 detect pins can be configured to output a PWM signal to indicate whether the key is touched (in detect)
or not touched (out of detect).
The Detect outputs must be enabled by selecting 7-key mode in the “Device Mode” setting (see Section 7.4 on page
30), and the corresponding “Key to LED” bits must be set to enable the individual Detect outputs for each key (see
Section 7.14 on page 36).
Table 7-10. Detect0 – Detect6 PWM
Address
9
10
11
12
13
14
15
Bit 7
Bit 6
Bit 5
IN_DETECT0
IN_DETECT1
IN_DETECT2
IN_DETECT3
IN_DETECT4
IN_DETECT5
IN_DETECT6
Bit 4
Bit 3
Bit 2
Bit 1
OUT_DETECT0
OUT_DETECT1
OUT_DETECT2
OUT_DETECT3
OUT_DETECT4
OUT_DETECT5
OUT_DETECT6
Bit 0
IN_DETECTn: PWM to output when key n is “In Detect” (where n is 0–6).
OUT_DETECTn: PWM to output when key n is “Out of Detect” (where n is 0–7). This PWM is also output if the
DETECT output is “disconnected” from the key (that is, “LED_n” in address 17 is set to 0), allowing the host to
directly control the PWM output.
AT42QT1110-MZ / AT42QT1110-AZ [DATASHEET] 34
9570J–AT42–05/2013