IQS550EV03 S Azoteq, IQS550EV03 S Datasheet - Page 18

• Manufacturer Part Number: IQS550EV03 S
• Description: Touch Sensor Development Tools Trackpad Demo for IQS550
• Manufacturer: Azoteq

Specifications of IQS550EV03 S

• Tool Is For Evaluation Of: IQS550
• Interface Type: I2C, SPI
• Operating Voltage: 1.65 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C

Name
Bit
The XY data consists of the status byte and
the following repeated sets of data bytes,
relative to the number of multi-touch points
Bit 7:
Bit 6:
Bit 5:
Bit 4:
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All Rights Reserved.
2 / 9 / 16 ...
3 / 10 / 17 ...
4 / 11 / 18 ...
5 / 12 / 19 ...
6 / 13 / 20 ...
7 / 14 / 21 ...
8 / 15 / 22 ...
Byte No.
SHOW_
RESET
1
7
SHOW_RESET: This bit can be monitored to determine whether a reset
MODE_INDICATOR: This shows in which mode the device currently is (only
NOISE_STATUS: This bit indicates the presence of RF noise interference.
LP_STATUS: This bit indicates if the charging is at full-speed, or low-power
occurred on the device after the ACK_RESET was last sent.
SHOW_RESET can be set to „0‟ by writing a „1‟ in the ACK_RESET bit.
0 = No reset has occurred since last cleared by ACK_RESET command
1 = Reset has occurred
required in Auto Mode)
0 = Normal Mode Charging
1 = ProxMode Charging
0 = No noise detected
1 = Noise detected (noise affected outputs are not used on-chip)
0 = full speed charging
INDICATOR
Touch Strength – High Byte
Touch Strength – Low Byte
MODE_
6
Xpos – High Byte
Ypos – High Byte
Xpos – Low Byte
Ypos – Low Byte
XY Info Byte
ID Tag
Data
NOISE_STATUS
ProxSense
Table 5.2
5
IQ Switch
IQS550 Trackpad Datasheet
XYInfoByte
®
used.
and thus a total of (7x5 + 1) 36 bytes are
available to be read in XY Data Read mode.
Touch Strength – indicates the „hardness‟ of this
Revision 1.04
Status bytes, and indicates the total number of
Series
®
LP_STATUS
XY Data
Currently 5 points are implemented,
4
Identify a specific co-ordinate
active co-ordinates
Description
X Position
Y Position
OUTPUT
touch
SNAP_
3
NO_OF_FINGERS
The value of
2
November 2012
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