Datasheet

(1)
I/O briefly on power-up
I Input only O Output only, push-pull
I/O Input/output P Ground or power
1.3 Schematics
1.3.1 6-pin SOT23-6
Figure 1-1. Basic Circuit Configuration
(active high output, toggle on/off, no auto switch off)
VDD
TIME
VSS
2
6
5
OUT
1
Rop
VDD
Cs
SNSK
SNS
4
3
Rs
Note: bypass capacitor to be tightly
wired between VDD and VSS and
kept close to pin 5.
SENSE
ELECTRODE
Cby
Rm
1.3.2 8-pin UDFN/USON
Figure 1-2. Basic Circuit Configuration
(active high output, toggle on/off, no auto switch off)
VDD
TIME
VSS
4
6
7
OUT
5
Rop
VDD
Cs
SNSK
SNS
8
1
Rs
Note: bypass capacitor to be tightly
wired between VDD and VSS and
kept close to pin 7.
SENSE
ELECTRODE
Cby
Rm
N/C
N/C
3
2
For component values in Figure 1-1 and Figure 1-2, check the following sections:
• Cs capacitor (Cs) – see Section 4.2 on page 20
• Sample resistor (Rs) – see Section 4.3 on page 20
• Voltage levels – see Section 4.4 on page 20
• Output polarity selection resistor (Rop) – see Section 3.9 on page 10
• Rm resistor – see Section 3.11.2 on page 11
• Bypass capacitor (Cby) – see page 20
AT42QT1012
© 2017 Microchip Technology Inc.
Datasheet
DS40001948A-page 6