Download Sim2 M80 Specifications

M80 Hardware Design
The reference design of 5V level match is shown as below. The construction of dotted line can
refer to the construction of solid line. Please pay attention to direction of connection. Input dotted
line of module should refer to input solid line of the module. Output dotted line of module should
refer to output solid line of the module.
MCU/ARM
MODULE
VDD_EXT
4.7k
VBAT
GND
4.7k
VCC_MCU
1K
/TXD
RXD
TXD
/RXD
l
e
t
l
c
a
i
e
t
u
n
Q fide
n
o
C
4.7k
4.7k
VCC_MCU
VDD_EXT
/RTS
/CTS
GPIO
EINT
GPIO
RTS
CTS
DTR
RI
STATUS
voltage level: 5V
Figure 25: 5V level match circuit
M80_HD_V1.0
- 51 -