SIM800H Document
SIM800H User Manual
Compliance Information
FCC Compliance Statement: This device complies with Part 15 of the FCC Rules . Operation is subject to the
following two conditions: 1. This device may not cause harmful interference, and 2. This device must accept
any interference received, including interference that may cause undesired operation. This device must accept
any interference received, including interference that may cause undesired operation. Product that is a radio
transmitter is labeled with FCC ID.
FCC Caution:
(1)Exposure to Radio Frequency Radiation. This equipment must be installed and operated in accordance with
provided instructions and the antenna(s) used for this transmitter must be installed to provide a separation
distance of at least 20 cm from all persons and must not be collocated or operating in conjunction with any other
antenna or transmitter. End-users and installers must be provided with antenna installation instructions and
transmitter operating conditions for satisfying RF exposure compliance.
(2) Any changes or modifications not expressly approved by the grantee of this device could void the user's
authority to operate the equipment.
(3) This Transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
(4) Changes or modifications to this unit not expressly approved by the party responsible for compliance could
void the user authority to operate the equipment.
(5) the modules FCC ID is not visible when installed in the host, or
(6) if the host is marketed so that end users do not have straight forward commonly used methods for access to
remove the module so that the FCC ID of the module is visible; then an additional permanent label referring to
the enclosed module: Contains Transmitter Module FCC ID: UDV-2013072401 or Contains FCC ID:
UDV-2013072401 must be used.
1. SIM800H Description
1.1. Summarize
SIM800H designed by SIMCom is a quad band module which supports GSM/GPRS. The baseband circuit is
based on MTK and RF circuit is based on RFMD. It works at quad bands------GSM850, EGSM900, DCS1800,
and PCS1900. CPU clock is based on 26MHz crystal. The main IC includes MT6260D and RF7176.
1.2. Feature
ƽ Quad-Band 850/900/1800/1900MHz
ƽ GPRS multi-slot class 12/10
ƽ GPRS mobile station class B
ƽ Bluetooth output power class 1
ƽ Bluetooth v3.0 with data rates 3.0Mbps
ƽ Compliant to GSM phase 2/2+
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SIM800H Document
Class 4 (2 W @ 850/900 MHz)
–
– Class 1 (1 W @ 1800/1900MHz)
ƽ Dimensions: 15.8*17.8*2.4 mm
ƽ Weight: 1.25 g
ƽ Control via AT commands (3GPP TS 27.007, 27.005 and SIMCom enhanced AT Commands)
ƽ Supply voltage range 3.6~4.2 V
ƽ Low power consumption
ƽ Operation temperature:-30~80ć
ƽ 88 LGA pads include
– Interface to external SIM 3V/1.8V
– Analog audio interface
– RTC backup
– Serial interface
– USB interface
– Keypad interface
– LCD interface
– Antenna pad
– PCM
– GPIO
– ADC
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SIM800H Document
1.3. Pin
RI
GND
PCM
GHT
3142
RXD
PCM
OUT
PCM
CLK
GPIO
GPIO
PWM
COL1
COL4
ROW3ROW2
30
29
28
3
27
2
26
25
24
23
40 39 38 37 36 35 34 33 3241
VBAT
VBAT
1
GND
2
GPIO
3
1
STATUS
4
BPI_
5
BUS1
GND
6
7
VBUS
8
GND
GND
GND
GND
GND
ISINK1
ISINK0
PWR
KEY
RESET
ADC
ANT
GND
USB_DP
GND
SDA
77
GND 87 88 83
78
79
GND
GNDGND
SCL
GND
86 85 84
80
BT_
ANT
GND
GNDGND
81
CTS
UART
_DCD
82
UART
_DTR
TXDRTS
UART_
PCMIN
SYNC
NETLI
ROW4
ROW0
SIM_
MIC2P
9
MIC2N
10
SPK2P
11 12 13 14 15 16 17 18 19 20
MIC1P
MIC1N
SPK1P
SPK1NSPK2N
SIM
PRE
SIM_
DATA
CLK
SIM_
RST
VRTC
VSIM
FM_
ANT_N
FM_
ANT_P
GND
VDD
EXT
USB_
DP
USB_
DM
ROW1 COL2
COL0
COL3
21
22
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SIM800H Document
1.4. Picture
FCC ID:UDV-2013072401
FCC ID:2013-072401
Figure 1: Top and Bottom view of SIM800H
1.5. Dimension
Figure 2: Dimention
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SIM800H Document
2. Detail Block Diagram
Power
supply
Power management unit
Radio
Frequency
RF
BT
FM
RTC
Analog Interface
Digital Interface
GPIOs
Audio
UART
SIM
USB
ADC
Analog base
band
Digital base
band
KEY
Figure 3: Block diagram of SIM800H
3. Electrical and Reliability Characteristics
3.1. Absolute Maximum Ratings
The absolute maximum ratings stated in following table are stress ratings under non-operating conditions. Stresses
beyond any of these limits will cause permanent damage to SIM800H.
Table 1: Absolute maximum ratings
Symbol Parameter Min Typ Max Unit
VBAT Power supply voltage - - 4.5 V
VBUS - - 30 V VBUS
*
I
Input current - - 8 mA
I
*
I
Output current - - 8 mA
O
*
These parameters are for digital interface pins, such as keypad, GPIO, I2C, UART, LCD and DEBUG.
3.2. Digital Interface Characteristics
Table 2: Digital interface characteristicsȱ
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SIM800H Document
Symbol Parameter Min Typ Max Unit
IIH High-level input current 2.1 - 3.1 V
IIL Low-level input current -0.3 - 0.7 V
VOH High-level input voltage 2.4 - - V
VOL Low-level input voltage - - 0.4 V
* These parameters are for digital interface pins, such as keypad, GPIO, I2C, UART, LCD, PWMs and DEBUG.
3.3. SIM Card Interface Characteristics
Table 3: SIM card interface characteristicsȱ
Symbol Parameter Min Typ Max Unit
IIH High-level input current -1 - 1 uA
IIL Low-level input current -1 - 1 uA
VIH High-level input voltage
1.4 - - V
2.4 - - V
- - 0.27 V
VIL Low-level input voltage
0.4 V
1.62 - - V
VOH High-level output voltage
2.7 - - V
- - 0.36 V
VOL Low-level output voltage
- - 0.4 V
3.4. SIM_VDD Characteristics
Table 4: SIM_VDD characteristicsȱ
Symbol Parameter Min Typ Max Unit
VO Output voltage 2.70 2.80 2.90 V
IO Output current - - 50 mA
3.5. VRTC Characteristics
Table 5: VRTC characteristicsȱ
Symbol Parameter Min Typ Max Unit
V
I
V
VRTC input voltage 2.8 V
RTC-IN
VRTC input current - 3 - uA
RTC-IN
RTC-OUT
VRTC output voltage - 2.8 - V
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SIM800H Document
I
RTC-OUT
VRTC output current - 2 mA
3.6. Current Consumption (VBAT = 3.8V)
Table 6: Current consumptionȱ
Symbol Parameter Conditions Value Unit
I
VRTC current VBAT disconnects. Backup battery is 3 V 2 uA
VRTC
Power down mode 50 uA
BS-PA-MFRMS=9 1.0
Sleep mode
Idle mode
BS-PA-MFRMS=2 1.8
GSM 850
EGSM 900
19 mA
DCS 1800
PCS 1900
mA BS-PA-MFRMS=5 1.2
I
VBAT current
VBAT
Voice call
Data mode
GPRS(1Rx,1Tx)
Data mode
GPRS(4Rx,1Tx)
GSM 850
EGSM 900
DCS 1800
PCS 1900
GSM 850
EGSM 900
DCS 1800
PCS 1900
GSM 850
EGSM 900
DCS 1800
PCS 1900
PCL=5 250
PCL=12 110
PCL=19 76
mA
PCL=0 168
PCL=7 89
PCL=15 76
PCL=5 240
mA PCL=12 110
PCL=19 83
PCL=0 170
mA PCL=7 95
PCL=15 80
PCL=5 270
mA PCL=12 150
PCL=19 120
PCL=0 205
mA PCL=7 130
PCL=15 115
Data mode
GPRS(3Rx,2Tx)
GSM 850
EGSM 900
DCS 1800
PCS 1900
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PCL=5 440
mA PCL=12 185
PCL=19 130
PCL=0 300
mA
PCL=7 155
SIM800H Document
ć
PCL=15 122
I
VBAT-peak
Peak current During Tx burst 2 A
3.7. Electro-Static Discharge
SIM800H is an ESD sensitive component, so more attention should be paid to the procedure of handling and
packaging. The ESD test results are shown in the following table.
7: The ESD characteristics (Temperature: 25
Table
Pin Contact discharge Air discharge
VBAT ±6KV ±12KV
GND ±6KV ±12KV
RXD, TXD ±2KV ±8KV
Antenna port ±5KV ±10KV
SPK_P/SPK_N/MIC_P/MIC_N
PWRKEY ±2KV ±8KV
±2KV ±5KV
, Humidity: 45 %)
4. Radio Characteristics
4.1. Module RF Output Power
The following table shows the module conducted output power, it is followed by the 3GPP TS 05.05 technical
specification requirement.
Table 8: SIM800H GSM 900 and GSM 850 conducted RF output power
GSM850ǃEGSM900
PCL Nominal output power (dBm)
5 33 ±2 ±2.5
6 31 ±3 ±4
7 29 ±3 ±4
Tolerance (dB) for conditions
Normal Extreme
8 27 ±3 ±4
9 25 ±3 ±4
10 23 ±3 ±4
11 21 ±3 ±4
12 19 ±3 ±4
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SIM800H Document
13 17 ±3 ±4
14 15 ±3 ±4
15 13 ±3 ±4
16 11 ±5 ±6
17 9 ±5 ±6
18 7 ±5 ±6
19-31 5 ±5 ±6
Table
9: SIM800H DCS 1800 and PCS 1900 conducted RF output power
DCS1800ǃPCS1900
PCL Nominal output power (dBm)
Tolerance (dB) for conditions
Normal Extreme
0 30 ±2 ±2.5
1 28 ±3 ±4
2 26 ±3 ±4
3 24 ±3 ±4
4 22 ±3 ±4
5 20 ±3 ±4
6 18 ±3 ±4
7 16 ±3 ±4
8 14 ±3 ±4
9 12 ±4 ±5
10 10 ±4 ±5
11 8 ±4 ±5
12 6 ±4 ±5
13 4 ±4 ±5
14 2 ±5 ±6
15 0 ±5 ±6
For the module’s output power, the following is should be noted:
At GSM900 and GSM850 band, the module is a class 4 device, so the module’s output power should not exceed
33dBm, and at the maximum power level, the output power tolerance should not exceed +/-2dB under normal
condition and +/-2.5dB under extreme condition.
At DCS1800 and PCS1900 band, the module is a class 1 device, so the module’s output power should not exceed
30dBm, and at the maximum power level, the output power tolerance should not exceed +/-2dB under normal
condition and +/-2.5dB under extreme condition.
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SIM800H Document
˅
4.2. Module RF Receive Sensitivity
The following table shows the module’s conducted receive sensitivity, it is tested under static condition.
Table
10: SIM800H conducted RF receive sensitivity
Frequency
GSM850 -108dBm -106dBm
EGSM900 -108dBm -106dBm
DCS1800 -108dBm -106dBm
PCS1900 -108dBm -106dBm
Receive sensitivity˄Typical
Receive sensitivity(Max)
4.3. Module Operating Frequencies
The following table shows the module’s operating frequency range; it is followed by the 3GPP TS 05.05 technical
specification requirement.
11: SIM800H operating frequencies
Table
Frequency Receive Transmit
GSM850 869 ~ 894MHz 824 ~ 849 MHz
EGSM900 925 ~ 960MHz 880 ~ 915MHz
DCS1800 1805 ~ 1880MHz 1710 ~ 1785MHz
PCS1900 1930 ~ 1990MHz 1850 ~ 1910MHz
5. Antenna interface
There are three antenna ports for SIM800H, GSM antenna port named RF_ANT, Bluetooth antenna port named
BT_ANT and FM antenna port named FM_ANT_P, The RF interface of the three antenna ports has an
impedance of 50.The maximum gain of the GSM antenna gain should not exceed 3dBi considering the SAR
radio. And the maximum gain of the Bluetooth antenna gain shout not exceed 2dBi.1RDQWHQQDJDLQPD\EHXVHG
WKDWZRXOGH[FHHGWKH:(,53SRZHUOLPLWLQ0+]EDQG
z The input impendence of the antenna should be 50, and the VSWR should be less than 2.
z It is recommended that the GSM antenna and the BT antenna be placed as far as better.
z The isolations of the three antenna should be bigger than 30d
5.1 GSM Antenna Interface
There is a GSM antenna pad named RF_ANT for SIM800H the connection of the antenna must be decoupled
from DC voltage. This is necessary because the antenna connector is DC coupled to ground via an inductor for
ESD protection.
The external antenna must be matched properly to achieve best performance, so the matching circuit is
necessary, the connection is recommended as following:
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SIM800H Document
Figure1: GSM antenna matching circuit
R101ˈC101ˈC102 are the matching circuit, the value should be defined by the antenna design. normally R101
is 0, C101 ઼ C102 are not SMD. The RF connector is used for conducted
5.2 Bluetooth antenna interface
The module provides a Bluetooth antenna interface named BT_ANT.
The external antenna must be matched properly to achieve best performance, so the matching circuit is
necessary, the connection is recommended as following figure:
GND
Module
BT_ANT
GND
C201
R201
C202
BT
Antenna
Figure 5: BT antenna matching circuit
R201ˈC201ˈC202 are the matching circuit, the value should be defined by the antenna design. R201 is
recommended as 1.2NH and C202 is 1.5pF, C201 are not SMD.
There are some suggestions to components placing and lying for GSM and Bluetooth RF traces:
z The RF connector is used for conducted test, so keep it as close as pin RF_ANT;
z Antenna matching circuit should be closed to the antenna;
z Keep the RF traces as 50˗
z The RF traces should be kept far away from the high frequency signals and strong disturbing source.
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