AT42QT2161-MMU Atmel, AT42QT2161-MMU Datasheet - Page 25

• 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

6.2
6.3
9614A–AT42–08/10
Address 0: Chip ID
Address 1: Code Version
Table 6-2.
Table 6-3.
Table 6-1.
Note: Reserved areas can be read or written to, to simplify communications. If written to, only
write 0x00.
There is an 8-bit chip ID, which is set at 0x3D.
There is an 8-bit major and minor version of firmware code revision. The top nibble of the
firmware version register contains the major version (e.g. 1.0) and the bottom nibble contains
the minor version (e.g. 1.0).
Address
Address
0
1
100 – 131
132 – 163
Address
80 – 99
71
72
73
74
75
76
77
78
79
Chip ID
Code Version
Memory Map (continued)
b7
b7
GPIO/GPO Drive 2
Reserved
GPIO Direction 2
GPIO/GPO PWM 1
GPIO/GPO PWM 2
PWM Level
GPIO Wake
Common change Keys 1
Common change Keys 2
Reserved
Key 0
Key 0
b6
b6
Major Version
–
–
15 Signals
15 References
–
–
0x00
0x00
b5
b5
Use
b4
b4
Chip ID
b3
b3
b2
b2
Minor Version
AT42QT2161
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Access
Read
Read
b1
b1
–
b0
b0
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