Legend: I = Input only, O = Output only, push-pull, I/O = Input/output,
OD = Open drain output, P = Ground or power
1.2.2 8-pin UDFN/USON
Table 1-2. Pin Listing
Name Pin Type Comments If Unused, Connect To...
SNSK 1 I/O Sense pin Cs + Key
N/C 2 — No connection —
N/C 3 — No connection —
VSS 4 P Supply ground —
OUT 5 O Output state —
SYNC/
MODE
6 I SYNC and Mode Input Pin is either SYNC/Slow/Fast Mode, depending on logic
level applied (see Section 3.1)
VDD 7 P Power —
SNS 8 I/O Sense pin Cs
Legend: I = Input only, O = Output only, push-pull, I/O = Input/output,
OD = Open drain output, P = Ground or power
1.3 Schematics
1.3.1 6-pin SOT23-6
Figure 1-1. Basic Circuit Configuration
Cs
OUT
VDD
SNSK
SNS
SYNC/MODE
VSS
2
6
4
3
1
5
VDD
Rs
Cx
SENSE
ELECTRODE
Note: A bypass capacitor should be tightly wired
between Vdd and Vss and kept close to pin 5.
AT42QT1010
© 2017 Microchip Technology Inc.
Datasheet
DS40001946A-page 6
