at42qt2160 ATMEL Corporation, at42qt2160 Datasheet - Page 15

• Manufacturer Part Number: at42qt2160
• Description: Qslide?, 16-key Qmatrix? Sensor Ic
• Manufacturer: ATMEL Corporation

4.19
Figure 4-8.
9502A–AT42–07/08
Vunreg
Wiring
Wiring Diagram
I2C ADDRESS
SELECT
I2C
CHANGE
VREG
SDA
SCL
Suggested regulator manufacturers:
Re
• Toko (XC6215 series)
• Seiko (S817 series)
• BCDSemi (AP2121 series)
•
•
•
•
•
•
•
Rchg
Section 4.3 on page
Section Note: on page
Section 4.7 on page
Section 4.11 on page
Section 6.4 on page
Section 4.2 on page
Section 4.2 on page
Figure 4-8
Rp
VDD
VDD
Rp
check the following sections for component values:
VDD
QT2160
5: Cs capacitors (Cs0...Cs1)
7: Matrix resistors (Rx0...Rx7, Ry0...Ry1)
22: SDA, SCL pull-up resistors (Rp)
5: CHANGE resistor (Rchg)
5:
11: Voltage levels
7: Sample resistors (Rs0...Rs1)
I
2
C
-compatible addresses
Rs1
and output bypass capacitors.
follow regulator manufacturers recommended values for input
tightly wire a 100nF bypass capacitor between Vdd and Vss (pins 3 and 4).
Rs0
Cs0
Cs1
Notes:
1) the central pad on the underside of the chip is a
2) it is important to place all Rx, Ry, Cs and Rs
3) leave YnA, YnB unconnected
Vss pin and should be connected to ground.
Do not put any other tracks underneath the body
of the chip.
components physically near to the chip.
if not used.
General purpose
inputs/outputs
Ry0
Ry1
Rx7
Rx6
Rx5
Rx4
Rx3
Rx2
Rx1
Rx0
AT42QT2160
15