IQS232/43EV02S Azoteq, IQS232/43EV02S Datasheet - Page 5

• Manufacturer Part Number: IQS232/43EV02S
• Description: Touch Sensor Development Tools IQS232/243 Eval Kit
• Manufacturer: Azoteq

Specifications of IQS232/43EV02S

• Rohs: yes

4 Reference Designs
4.1 IQS232 Reference Design
4.2 IQS243 Reference Design
Copyright © Azoteq (Pty) Ltd 2012.
All Rights Reserved.
Connect to sense buttons
(See Appnote: AZD008 for button design
guidelines)
CX0
CX1
VIN
GND
TO0 = Touch Output 0
TO1 = Touch Output 1
P0 = Proximity Output 0
Connect to sense buttons
(See Appnote: AZD008 for button design
guidelines)
CX0
CX1
CX2
VIN
GND
VDDHI
GND
VDDHI
GND
R1
470R
R2
470R
R0
470R
R1
470R
R2
470R
TO0/DATA
PO0/RDY
TO1/SCL
2
8
6
7
5
U1
IQS232 SOIC-8
CX0
CX1
TO0/SDA
TO1/SCL
PO0/RF&RDY
RDY/RF
ADR0
SDA
SCL
10
2
3
9
7
8
6
U1
IQS243 MSOP-10
Figure 4.1
Figure 4.2
CX0
CX1
CX2
SDA
SCL
RDY/RF
ADR0
VDDHI
VREG
GND
3
4
1
GND
ProxSense
VDDHI
VREG
GND
GND
Optional: 100pF capacitors for additional RF
immunity.
IQS232/43EV02 Evaluation Kit User Manual
C3
1uF
IQ Switch
IQS232 Reference design
IQS243 Reference design
4
5
1
GND
Optional: 100pF capacitors for additional RF immunity.
C4
100pF
GND
®
C2
100pF
C4
100pf
Revision 1.1
Series
®
GND
Populate R3, R4, R5 if using IQS232 in debug mode only.
C3
1uF
C1
1uF
VDDHI
C2
100pF
VDDHI
IOs configured as software open drain (default)
VDDHI
GND
C1
1uF
R6
2K
R7
2K
R8
2K
VDDHI
DS1
DS2
DS3
R8
4.7K
R9
4.7K
R10
10K
R7
4.7K
R4
10k
VDDHI
R5
10k
SDA
SCL
ADR0
RDY/RF
R3
10k
TO0/SDA
TO1/SCL
PO0/RDY
Page 5 of 6
June 2012
SDA
SCL
ADR0
RDY
TO0
TO1
PO0