AT42QT2161-MMU Atmel, AT42QT2161-MMU Datasheet - Page 24

• 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

6. Communications Protocol
6.1
24
Introduction
AT42QT2161
The device is address mapped. All communications consist of writes to, and reads from,
locations in an 8-bit address map.
Table 6-1.
Address
22 – 37
38 – 53
54 – 69
8 – 9
10
11
12
13
14
15
16
17
18
19
20
21
70
0
1
2
3
4
5
6
7
Memory Map
Chip ID
Major/minor code version
General Status
Key Status 1
Key Status 2
Slider Touch Position
GPIO Read
Sub-revision
Reserved
Calibrate
Reset
LP Mode
Burst Repetition
Reserved
Neg Drift Compensation
Pos Drift Compensation
Normal DI Limit
Neg Recal Delay
Drift Hold Time/AWAKE
Slider Control
Slider Options
Key 0
Key 0
Key 0
GPIO/GPO Drive 1
–
–
–
15 Key Control
15 Neg Threshold
15 Burst Length
Table 6-1
–
–
0x00
0x00
Use
shows the address map of QT2161.
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Access
Read
Read
Read
Read
Read
Read
Read
–
–
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