AT42QT1111-AU Atmel, AT42QT1111-AU Datasheet - Page 40

• Manufacturer Part Number: AT42QT1111-AU
• Description: IC TOUCH SENSOR 11KEY TQFP
• Manufacturer: Atmel
• Series: QTouch™r
• Type: Capacitiver

Specifications of AT42QT1111-AU

• Touch Panel Interface: 10, 2-Wire
• Number Of Inputs/keys: 11 Key
• Data Interface: Serial, SPI™
• Voltage Reference: Internal
• Voltage - Supply: 3 V ~ 5.5 V
• Current - Supply: 12mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-TQFP
• Output Type: Logic
• Interface: SPI
• Input Type: Logic
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: AT42QT1111-AU; AT42QT1111-AUTR

8.6
8.7
40
Parameter
Internal RC oscillator
Parameter
Reset
V
RST
External Reset
Internal Resonator
AT42QT1111-MU/AT42QT1111-AU
Description
Threshold voltage low (Activate)
Threshold voltage high (Release)
Minimum length of Reset low
Figure 8-1.
Signals on SPI Pins During the Exchange of a Data Byte
SCK
SAMPLE
MOSI/MISO
CHANGE
MOSI PIN
CHANGE
MISO PIN
SS
Operation
0.2Vdd
0.9Vdd
600 ns at 5V
1100 ns at 3V
Operation
8 MHz with spread-spectrum modifier during measurement bursts
MSB
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
9571A–AT42–02/10
LSB