qt1100a Quantum Research Group, qt1100a Datasheet - Page 10

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

Figure 1.2 UART / Scanport Connection Diagram
Shown with optional EEPROM
Note 1: EEPROM is optional when using UART interface in this drawing.
Note 2: UART interface is not normally used when using Scanport interface and vice versa.
Note 3: See Table 1.1 for unused pin connections
LQ
KEY3
KEY4
KEY5
KEY6
KEY7
KEY8
KEY9
VUNREG
5
6
7
8
*10uF
VSS
NC
NC
VDD
93LC46A
4.7K
4.7K
4.7K
4.7K
4.7K
4.7K
4.7K
10K
10K
22K
CLK
DOUT
DIN
CS
VI
Regulator
3
2
1
4
G
22nF
22nF
22nF
22nF
22nF
22nF
22nF
VO
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.
10
Copyright © 2003-2005 QRG Ltd
12MHz 3-PIN
2.2K
2.2K
2.2K
4.7K
RESONATOR
QT1100A-ISG R3.02/1105
22K
22nF
22nF
22nF
VDD
4.7K
4.7K
4.7K
SCANI_0
SCANI_1
SCANI_2
SCANO_3
SCANO_2
SCANO_1
SCANO_0
TX
CRDY
RX/WAKE
22K
KEY2
KEY1
KEY0
RESET
SYNC