QST104 STMicroelectronics, QST104 Datasheet - Page 24

• Manufacturer Part Number: QST104
• Description: Capacitive touch sensor device 4 keys
• Manufacturer: STMicroelectronics

Device operating modes
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GPO state description
Table 16.
GPOState
AKS group mode description
Table 17.
AKSGrpnMode
AKS group selection description
Table 18.
Grpx
GPOState1
GPOState2
AKSGrp8
Mode
Grp8
Bit 7
Bit 7
Byte
Defines the state of the selected general-purpose output pin. For more information, see
Section 4.6.2: General-purpose outputs on page
Defines the type of AKS for the Group n:
The selected key is a member of AKS Group x.
0: GPO state is ‘0’
1: GPO state is ‘1’
0: Locking AKS
1: Unlocking AKS
GPOState
AKSGrpnMode
AKSGrp7
KeynGrp
First key pressed within the group locks out all other keys.
Most heavily pressed key (highest signal level) is selected over all other
keys in the group.
GPO 8
Mode
Grp7
Bit 6
Bit 6
Bit 7
state
0
GPO 7
AKSGrp6
Bit 6
state
Mode
Grp6
Bit 5
Bit 5
0
GPO 6
Bit 5
state
AKSGrp5
0
Mode
Grp5
Bit 4
Bit 4
GPO 13
GPO 5
Bit 4
state
state
AKSGrp4
Mode
Bit 3
Bit 3
Grp4
GPO 12
GPO 4
17.
Bit 3
state
state
AKSGrp3
Mode
Grp3
Bit 2
Bit 2
GPO 11
GPO 3
Bit 2
state
state
AKSGrp2
Mode
Bit 1
Bit 1
Grp2
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GPO 10
GPO 2
Bit 1
state
state
AKSGrp1
QST104
Mode
GPO 1
GPO 8
Grp1
Bit 0
Bit 0
Bit 0
state
state