at42qt1481 ATMEL Corporation, at42qt1481 Datasheet - Page 3

• Manufacturer Part Number: at42qt1481
• Description: 48-key Qmatrix Ic
• Manufacturer: ATMEL Corporation

Table 1-1.
9621B–AT42–06/11
Pin
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
Pin Listing (Continued)
Dbg_Data
STATUS /
Name
DRDY
SMP
Y3A
Y2A
Y1A
Y0A
Y0B
Y1B
Y2B
Y3B
Y4A
Y4B
Y5A
Y5B
Vdd
Vss
Vdd
Vss
Vdd
Vdd
Vss
X0
X1
X2
X3
X4
X5
X6
X7
Type
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
P
P
O
O
O
O
O
O
O
O
P
P
P
P
P
O
Sample output
Y line connection
Y line connection
Y line connection
Y line connection
Power
Ground
X matrix drive line
X matrix drive line
X matrix drive line
X matrix drive line
X matrix drive line
X matrix drive line
X matrix drive line
X matrix drive line/
Power
Ground
Power
Y line connection
Y line connection
Y line connection
Y line connection
Y line connection
Y line connection
Y line connection
Y line connection
Power
Ground
Status output (active low) or Debug Data; has internal
20 k – 50 k pull-up resistor
This pin MUST be used.
1 = comms ready; need a 20 µs grace period before
checking. Open-drain with internal 20 k – 50 k
pull-up resistor
Comments
AT42QT1481
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