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SIM800L 数据表(PDF) 16 Page - SIMCom

部件名 SIM800L
功能描述  Hardware Design_V2.02
PDF  73 Pages
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制造商  SIMCOM [SIMCom]
网页  https://www.simcom.com
标志 SIMCOM - SIMCom

SIM800L 数据表(HTML) 16 Page - SIMCom

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Smart Machine Smart Decision
SIM800H&SIM800L_Hardware Design_V2.02
16
2015-07-27
3.2. Pin Description
Table 5: Pin description
Pin name
Pin number
I/O Description
Comment
Power supply
VBAT
1,42
I
Power supply
VRTC
56
I/O
Power supply for RTC
It is recommended to
connect with a battery or a
capacitor (e.g. 4.7uF).
VDD_EXT
18
O
2.8V power output
If these pins are unused,
keep open.
GND
2,6,8,35,37,38,39,
41,43,44,45,58,67
,71,72,73,76,77,7
8,79,80,81,82,83,
84,85,86,87,88
Ground
GND for VBAT recommend
to use 2,43,44,45pin
Power on/down
PWRKEY
48
I
PWRKEY should be pulled low at
least 1 second and then released to
power on/down the module.
Internally pulled up to
VBAT.
Audio interfaces
MIC1P
52
MIC1N
12
I
Differential audio input
SPK1P
53
SPK1N
13
O
Differential audio output
MIC2P
9
MIC2N
10
I
Differential audio input
SPK2P
51
SPK2N
11
O
Differential audio output
If these pins are unused,
keep open.
PCM interface
PCM_CLK
29
O
PCM_OUT
30
O
PCM_SYNC
65
O
PCM_IN
66
I
PCM interface for digital audio
If these pins are unused,
keep open.
Keypads interface
KBC4
24
I
KBC3
21
I
KBC2
22
I
KBC1
25
I
KBC0
20
I
KBR4
63
O
KBR3
23
O
Support up to 50 buttons (5*5*2)
If these pins are unused,
keep open.（Please make
sure pin20 at high level
when power on）



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