Rsa-1200l user manual – RoyalTek RSA-1200LX User Manual
Page 11
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RSA-1200L User Manual
1.7 Hardware interface
Figure 1-6 Hardware Interface
Table 1-2 Definition of Pin assignment
Pin Defined
Pin Signal Name
I/O Description
Characteristics
1
VCC
I
DC Supply
Voltage input
DC +3.3V
±
5%
2
GND
G
Ground
Reference Ground
3
TXA
O
Serial port A
V
V
V
V
V
OL
OH
7
.
0
38
.
2
85
.
2
≤
≥
≥
4
RXA
I
Serial port A
V
V
V
V
V
IL
IH
86
.
0
0.3V
-
0
.
2
15
.
3
≤
≤
≥
≥
5
GPIO-1
I/O General
purpose I/O
V
V
V
V
V
IL
IH
86
.
0
0.3V
-
0
.
2
15
.
3
≤
≤
≥
≥
V
V
V
V
V
OL
OH
71
.
0
14
.
2
85
.
2
≤
≥
≥
6
VBATT
I
Backup voltage
supply
10uA
Current
3.6V
~
2.5
DC
≤
+
+
RSA-1200LX
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