AT42QT2161-MMU Atmel, AT42QT2161-MMU Datasheet - Page 43

• 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

9614A–AT42–08/10
Figure 8-1.
Typical Initialization and Usage
Yes
Read all status bytes (Address 2 – 6)
to restore CHANGE pin to inactive
Read required Status bytes and other
Host processes received status bytes
status bytes that changed , to restore
Send setup parameters to set up
CHANGE pin to inactive (high).
Send Calibrate command
Reset/Power Up
CHANGE pin
active (low)?
‘Reset occurred’
CHANGE pin
active (low)?
bit = 1?
QT2161
(high)
Yes
Yes
No
No
No
AT42QT2161
43