1.3 Wiring
Table 1.1 Pinlist
32-QFN
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Name
SS
/RST
Vdd
OSC
n/c
SNS0
SNS0K
SNS1
SNS1K
SNS2
SNS2K
SNS3
SNS3K
SNS4
SNS4K
SNS5
SNS5K
SNS6
SNS6K
SNS7
SN7K
Vss
SYNC/LP
‡
DETECT
OUT_0
OUT_1
OUT_2
OUT_3
OUT_4
OUT_5
OUT_6
OUT_7
Type
OD
I
Pwr
I
-
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
Pwr
I
O/OD
O/OD
O/OD
O/OD
O/OD
O/OD
O/OD
O/OD
O/OD
Function
Spread spectrum
Reset input
Power
Notes
If Unused
100K resistor to Vss
Vdd
-
-
-
Option resistor
Open
Open or
option resistor*
Open
Open or
option resistor*
Open
Open or
option resistor*
Open
Open or
option resistor*
Open
Open or
option resistor*
Open
Open or
option resistor*
Open or
mode resistor
†
Open or mode resistor
†
or option resistor*
Open
-
Vdd or Vss
Open
Open
Open
Open
Open
Open
Open
Open
Open
Spread spectrum drive
Active low reset
+2.8 ~ +5.0V
Resistor to Vdd and optional
Oscillator
spread spectrum RC network
-
Leave open
Sense pin and
To Cs0 and/or
option select
option resistor
Sense pin
To Cs0 + Key
Sense pin and
To Cs1 and/or
option select
option resistor*
Sense pin
To Cs1 + Key
Sense pin and
To Cs2 and/or
option select
option resistor*
Sense pin
To Cs2 + Key
Sense pin and
To Cs3 and/or
option select
option resistor*
Sense pin
To Cs3 + Key
Sense pin and
To Cs4 and/or
option select
option resistor*
Sense pin
To Cs4 + Key
Sense pin and
To Cs5 and/or
option select
option resistor*
Sense pin
To Cs5 + Key
Sense pin and
To Cs6 and/or
option select
option resistor*
Sense pin and
To Cs6 + Key and/or
mode select
mode resistor
†
Sense pin and mode To Cs7 and/or mode resistor
†
or option select
or option resistor*
Sense pin
To Cs7 + Key
Ground
0V
Sync In or LP In
Rising edge sync or LP pulse
Detect Status
Active = any key in detect
Out 0
Also, binary coded output 0
Out 1
Also, binary coded output 1
Out 2
Also, binary coded output 2
Out 3
Out 4
In binary coded mode, these pins
Out 5
are clamped internally to Vss
Out 6
Out 7
Pin Type
I
I/O
O
OD
O/OD
Pwr
CMOS input only
CMOS I/O
CMOS push-pull output
CMOS open drain output
CMOS push pull or open-drain output (option selected)
Power / ground
Notes
†
Mode resistor is required only in Simplified mode (see Figure 1.2)
* Option resistor is required only in Full Options mode (see Figure 1.1)
‡
Pin is either Sync or LP depending on options selected (functions SL_0, SL_1, see Figure 1.1)
lQ
5
QT1081_1R0.04_0307
QUANTUM [ QUANTUM RESEARCH GROUP ]
