AT42QT2161-MMU Atmel, AT42QT2161-MMU Datasheet - Page 37

• Manufacturer Part Number: AT42QT2161-MMU
• Description: IC TOUCH SENSOR 16KEY QFN M-MOD
• Manufacturer: Atmel
• Type: Capacitiver

Specifications of AT42QT2161-MMU

• Touch Panel Interface: 8, 2-Wire
• Number Of Inputs/keys: 16 Key, Slider
• Resolution (bits): 10 b
• Data Interface: I²C, Serial
• Voltage Reference: Internal
• Voltage - Supply: 1.8 V ~ 5.5 V
• Current - Supply: 1.14mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-VFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

7. Setups Block
Setups data is sent from the host to the QT2161 using the
onto this interface. Thus each setup can be accessed by reading/writing the appropriate address. Setups can be accessed
individually or as a block.
Table 7-1.
9614A–AT42–08/10
Address
22
38
54
12
13
15
16
17
18
19
20
21
–
–
–
37
53
69
Bytes
16
16
16
Setups Table
1
1
1
1
1
1
1
1
1
LP Mode
Burst Repetition
Neg Drift Comp
Pos Drift Comp
Normal DI Limit
Neg recal delay
Drift Hold
Time/Awake
Timeout
Slider Control
Slider Options
Key Control
Neg threshold
Burst Length
Parameter
DHT/AWAKE
RESOLUTIO
NUM_KEYS
KEY_CONT
LP_MODE
Symbol
NDRIFT
PDRIFT
BREP
NTHR
HYST
NDIL
NRD
BL
N
Range
0
0
0
0
2
0, 2
1
0
1
1
0
Valid
0
0
–
–
–
–
–
–
–
–
–
–
–
–
255
127
127
255
255
255
255
–
63
31
15
6
3
8
I
Bits
2
C
8
6
7
7
5
8
8
4
4
3
3
8
8
-compatible interface. The setups block is memory mapped
Scope
Slider
Slider
Slider
Key
16
16
16
16
16
16
16
1
1
1
0 (AKS off)
5 (5 keys)
Default
position)
pulses)
(40.8s)
25 (4s)
25 (4s)
Value
4 (16
255
0 (1
20
10
1
1
5
3
0: SLEEP mode (no capacitive
sensing)
1- 255: Low Power mode,
increments in steps of 16 ms
Range is 1
Range is in 0.16s increments, 1 =
0.16s/reference level
Range is in 0.16s increments, 1 =
0.16s/reference level
Normal DI limit: take the operand
and add 2 to get the value
Range is in 0.16s increments; 0 =
infinite; default = 40.8s
Range is {infinite, 0.16
Range in 0.2s increments; default
= 4s
0
reported position
0: disables slider mode
2
Slider Keys start at X0 and are on
Y0
Resolution of reported slider touch
position
8 bits (0) to 2 bits (6)
0: AKS disabled
1
0: Key disabled
1
–
–
–
–
8: hysteresis for slider’s
8: number of keys in slider
3: AKS groups
255: Burst length = BL x 4
Description
–
63 burst repetitions
AT42QT2161
–
40.8s}
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