QT1106-ISG Atmel, QT1106-ISG Datasheet - Page 9

• Manufacturer Part Number: QT1106-ISG
• Description: QT1106 WHEEL/SLIDER CHIP W/7KEYS
• Manufacturer: Atmel
• Series: QSlide™, QTouch™, QWheel™r
• Type: Capacitiver

Specifications of QT1106-ISG

• Touch Panel Interface: 5-Wire
• Number Of Inputs/keys: 7 Slider
• Resolution (bits): 14 b
• Data Interface: Serial, SPI™
• Voltage Reference: External
• Voltage - Supply: 2.8 V ~ 5 V
• Current - Supply: 1.3mA ~ 3.6mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-QFN
• Output Type: Logic
• Interface: SPI
• Input Type: Logic
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 427-1115-2

/SS Wake Operation: /SS is also used to wake the device
from sleep, see Section 4.3
3.5 SPI Host Commands
3.5.1 Overview
The command from the host consists of three bytes, #1, #2
and #3. These three bytes contain operation mode settings
which must be transmitted every time. The setting information
in these three bytes becomes effective immediately after all
three are received by the QT1106.
The response to these three bytes is three data bytes
containing key detection information.
A downloadable host-driver software example for controlling
the QT1106 can be found on the Quantum website at
http://www.qprox.com/toolbox,
There are two command modes, selectable through bit CT.
CT - Custom threshold: Selects between normal command
bytes and custom threshold commands.
3.5.2 Normal Command Mode
Normal command mode data is sent every time an SPI
communication occurs, unless a custom threshold command
is required (see Section 3.5.3, page 10). The custom
threshold command is sent once (instead of the normal
command mode data) and then the normal command mode
resumes operation as usual.
When CT = 0, the three host command bytes should contain
the following bits:
Bits labelled ‘0’ should not be altered.
The bits used in these three bytes are defined as follows:
AKS - Three bits used to determine the AKS mode. See
SLD - Scrolling device type selection.
Prox - Key 7 QMagic Proximity mode. See Section 2.6 for
Lq
2
0
0
0
0
1
1
Byte #
CT = 0: Normal commands.
CT = 1: Custom Threshold commands.
SLD = 0: Wheel mode (default)
SLD = 1: Linear slider mode.
Prox = 0: Key 7 is a normal key (default)
Prox = 1: Key 7 is a proximity sensor.
Host
Section 2.4 for further information.
further information.
1
2
3
AKS
1
2
3
keys 1-4 AKS’d together
keys 5-7 AKS’d together
keys 1-6 AKS’d together
1
0
0
1
1
0
0
0
0
1
0
1
0
1
CT=0
7
0
Resolution
AKS Option
AKS disabled (default)
AKS global
AKS keys + Wheel/Slider
AKS 4 keys
AKS 4 keys
AKS (6 keys
6
0
MOD
5
0
1
1
3
+ 3 Keys
+ (3 Keys
+ Wheel/Slider) + key 7
CalW
Prox
then click QT1106.
DI
4
Bit
CalK
2
SLD
LPB
2
+ Wheel/Slider
3
+ Wheel/Slider)
2
Cal Key Num
Mode
AKS
1
0
9
Mode - These bits determine the Sleep / Low Power modes
1
2
LPB - Sets the LP mode ‘following burst’ option. See
DI - Set the ‘Detect Integrator’ noise filter function.
MOD (Recal Time) - Sets the 'Maximum On-duration' for all
Cal Key Num - key to be recalibrated when CalK = 1.
CalK - Recalibrates the key(s) specified by Cal Key Num.
Mode Bits
response times are estimated using a DI of six counts.
response times are estimated using a DI of two counts.
2
0
0
0
0
1
1
1
1
6
0
0
1
1
Num Bits
2
0
0
0
0
1
1
1
1
MOD
LPB = 0: If the host communicates with the device or there
LPB = 1: If the host communicates with the device or there
DI = 0: Two detections required to confirm a touch (faster
DI = 1: Six detections required to confirm a touch (slower
keys. Controls the time from the start of a key detection to
when the key is automatically recalibrated. See Table 2.1
for MOD times in other operating modes.
Cal Key
CalK = 0: No recalibration (normal state of this bit).
CalK = 1: The device recalibrates key(s).
Note: Once activated, Key 7 will be in QMagic Proximity
mode until a reset occurs.
the device runs in.
Figures 4.1 and 4.2.
1
0
0
1
1
0
0
1
1
1
0
0
1
1
0
0
1
1
is an /SS pulse during any LP mode (modes 001 to
100), there will be no following burst. The only bursts
that will take place are those that occur as naturally
defined by the LP mode noted above.
is an /SS pulse during any LP mode (modes 001 to
100), there will be an additional burst following /SS
raising high. (default)
but less noise immune).
but more noise immune; appropriate for most
applications). (default)
5
0
1
0
1
0
0
1
0
1
0
1
0
1
0
0
1
0
1
0
1
0
1
Maximum On-duration in Free Run Mode
10s (default)
20s
60s
infinite MOD - timeout disabled
Operating Mode
Free Run (default)
LP mode, 200ms
LP mode, 280ms
LP mode, 440ms
LP mode, 760ms
Sync mode
Sleep
(reserved)
Key
Recalibrate all keys (excluding wheel/slider)
Recalibrate Key 1
Recalibrate Key 2
Recalibrate Key 3
Recalibrate Key 4
Recalibrate Key 5
Recalibrate Key 6
Recalibrate Key 7
1
1
1
1
QT1106_8IR0.07_0907
response time (120ms
response time (200ms
response time (360ms
response time (680ms
2
2
2
2
)
)
)
)