QT60240-ATG Datasheet, PDF (21/26 Pages) List of Unclassifed Manufacturers – 16 AND 24 KEY QMATRIX TOUCH SENSOR ICs

6.16 Setups Block
Table 6.1 Setups Table
Setups data is sent from the host to the QT using the I ²C interface. The setups block is memory mapped onto this interface. Thus each setup can be accessed by
reading/writing the appropriate address. Setups can be accessed individually or as a block. Before writing to any setup, an unlock code (value 0x55) must be written to the
setups write unlock address (130). Refer also to Table 6.2, page 22 for further details, and all of Section 6.
Item Address Bytes Parameter
1 131...154
24
Neg thresh
Neg Drift Comp
Symbol Valid Range
NTHR NTHR = 0...15
NDRIFT NDRIFT = 0...15
Bits
4
4
Key
Scope
1
1
Default
Value
Description
6
Lower nibble = Neg Threshold - take operand and add 4 to get value
10
Upper nibble = Neg Drift comp - via Lookup Table (LUT) (Table 6.2, page 22)
Page
17
17
2 155...178
24 Pos Drift Comp
PDRIFT PDRIFT = 0...15
4
1
4
Upper nibble = Pos Drift comp - via LUT (Table 6.2, page 22)
17
3 179...202
24
Normal DI Limit
Fast DI Limit
NDIL
FDIL
NDIL = 0...15
FDIL = 0...15
4
1
4
1
2
5
Lower nibble = Normal DI Limit, values same as operand (0 = disabled burst)
For QT60160, only the first 16 locations are set to 2, the last eight are set to 0
Upper nibble = Fast DI Limit, values same as operand (0 does not work)
18
4 203...226
24 Neg recal delay
NRD 0...254
8
1
20
Range is in 0.5 sec increments; 0 = infinite, default = 10s
Range is {infinite, 0.5...127s}; 255 is illegal to use
18
Wake On Touch
WAKE WAKE = 0,1
1
1
1
Bit 3 = WAKE, 1 - enabled
20
5 227...250
24
Burst Length
AKS
BL
AKS
BL = 0...3
AKS = 0,1
2
1
1
1
2
Bits 5, 4 = BL, via LUT (Table 6.2 page 22), default = 48
0
Bit 6 = AKS, 1 - enabled
19
19
Scope Sync
SSYNC SSYNC = 0,1
1
1
0
Bit 7 = Scope sync, 1 = enabled
19
6
251
1
Sleep Duration
Mains Sync
SLEEP SLEEP = 0...7
MSYNC MSYNC = 0,1
3
24
1
24
3
Bits 2,1,0 = Sleep Duration, 8 values via LUT, default = 125ms
0
Bits 6 = Mains sync, negative edge, 1 = enabled, default = off
20
19
7
252
1
Awake Timeout
AWAKE 1...255
8
24
25
Range is in 100ms increments; 1 = 100ms. Default = 2.5s. 0 is illegal to use
20
8
253
1
Drift Hold Time
DHT 0...255
8
24
10
Range is in 100ms increments; 0 = disable, 1 = 100ms, default = 1s
20
lQ
21
QT60240-ISG R8.06/0906