qt1100a Quantum Research Group, qt1100a Datasheet - Page 9

• Manufacturer Part Number: qt1100a
• Description: 10 Key Qtouch? Sensor Ic
• Manufacturer: Quantum Research Group

Figure 1.1 SPI Connection Diagram
Note 1: EEPROM is optional when using SPI interface.
Note 2: See Table 1.4 for unused pin connections.
LQ
KEY3
KEY4
KEY5
KEY6
KEY7
KEY8
KEY9
VUNREG
5
6
7
8
*10uF
VDD
VSS
NC
NC
93LC46A
4.7K
4.7K
4.7K
4.7K
4.7K
4.7K
4.7K
CLK
DOUT
22K
DIN
CS
Regulator
VI
3
2
1
4
G
22nF
22nF
22nF
22nF
22nF
22nF
22nF
VO
10K
2.2K
2.2K
2.2K
2.2K
2.2K
2.2K
2.2K
*4.7uF
*100nF
VDD
QT1100A-AS
*One bypass capacitor to be tightly coupled to pins 36 and 17.
Follow regulator manufacturer's recommendations
for input and output capacitors.
9
Copyright © 2003-2005 QRG Ltd
12MHz 3-TERM
RESONATOR
2.2K
2.2K
2.2K
4.7K
QT1100A-ISG R3.02/1105
22nF
22nF
22nF
22K
VDD
4.7K
4.7K
4.7K
/SS
DI
DO
CLK
CRDY
WAKE
22K
KEY2
KEY1
KEY0
RESET
SYNC