IQS128EV04 S Azoteq, IQS128EV04 S Datasheet - Page 18

• Manufacturer Part Number: IQS128EV04 S
• Description: Touch Sensor Development Tools Long range IQS128 proximity kit
• Manufacturer: Azoteq

Specifications of IQS128EV04 S

• Tool Is For Evaluation Of: IQS128
• Interface Type: LED
• Operating Voltage: 2.95 V to 5.5 V

7 Streaming Mode
For a more complete description of the data
streaming
Application Note AZD017 on the Azoteq
website.
The IQS128/IQS128L has the capability to
stream data to a MCU. This provides the
designer the ability to obtain the parameters
and sensor data within the device in order to
aid design into applications. Data streaming
is performed as a 1-wire data protocol on the
OUT pin. The output function of this pin is
therefore lost when the device is configured
in streaming mode. Data Streaming can be
enabled as indicated below:
Configuration: Bank1 bit7: Streaming Mode
Bit
0
1
Figure 7.1 illustrates the communication
protocol for initialising and sending data with
the 1 wire communication protocol.
The following table defines the bit definitions
for the IQS128/IQS128L devices during
Streaming Mode.
Copyright © Azoteq (Pty) Ltd 2012
All Rights Reserved
TOUT
/OUT
Selection
Disabled
Enabled
Start
protocol,
t
INIT
Stop – Start
t
DATA
D7
IQ Switch
Figure 7.1 Debug: 1-wire streaming Debug Mode
please
D6
Stop – Start
®
refer
ProxSense
D5
IQS128 & IQS128L Datasheet v2.4
to
®
D4
Series
1. Communications initiated by a START
2. Following
3. Following T
4. Each byte sent will be preceded by a
5. STOP bit indicated by taking pin 1
D3
bit. Bit defined as a low condition for
T
synchronisation byte (T
This byte is used by the MCU for
clock synchronisation.
sent. With short data streaming mode
enabled, 5 bytes of data will be sent,
otherwise 8 bytes will be sent after
each charge cycle.
START bit and a STOP bit will follow
every byte.
high. The STOP bit does not have a
defined
START
.
D2
the
INIT
the data bytes will be
D1
START
D0
INIT
bit,
Page 18 of 33
= 0xAA).
t
STOP
April 2013
period.
is
a