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Sunsea AIoT SIMCom SIM5800, Проектирование аппаратного обеспечения, Страница: 29 / 53

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Sunsea AIoT SIMCom SIM5800 Скачать руководство пользователя страница 29

                                                     

Smart Machine Smart Decision

 

SIM5800_Hardware Design_V1.01

                                                  29                         

                                                      2018-10-08 

Figure 19: Charge diagram 

Note: The standard charger supported by SIM5800 module needs to connect USB_DP and USB_DM 
together, and the charging current can only reach the normal value set by the software after the software 
determines that it is a standard charger. If there is no short connection between USB_DP and USB_DM, 
the software thinks that it is a non-standard charger with a small charging current and a slow charging.  

 

4.6.1Charger detection 

 

When the VBUS pin voltage is higher than 4.3v (TBD), a hardware interrupt will occur inside the module. The 
software recognizes whether the charger is inserted or the USB data cable is inserted by judging the state of 
USB_DP/USB_DM. 
 
Whenever an invalid charging source is detected (>7.0V),the charger detector will stop charging process 
immediately to avoid burning out the chip or module. Furthermore, if the charger-in level is not high enough 
(<4.3V),the charger will also be disabled to avoid improper charging behavior. 

 

4.6.2Charging Control 

 

When the charger is active, the charger controller will manage the charging phase according to the battery status. 
During the charging period, the battery voltage is constantly monitored. The battery charger supports pre-charge 
mode (VBAT<3.2V, PMIC power-off state), CC mode (constant current mode or fast charging mode at the range 
of 3.2V<VBAT<4.2V) and CV mode (constant voltage mode) to optimize the charging procedure for Li-ion 
battery. 

 

4.6.2.1

 

Pre-charge mode 

 

When the battery voltage is in the UVLO state, the charger will operate in the pre-charge mode. There are two 
steps in this mode. While the battery voltage is deeply discharged below 2.2V,the trickle charging current is 
applied to the battery, the trickle charging current is about 550ms pulse 70mA current when VBAT is under 
2.2V.when the battery voltage exceeds 2.2V,the charging current is 300mA(AC charger) or 70mA(USB host). 

 

4.6.2.2

 

Constant current mode 

 

As the battery is charged up and over 3.3V,it can switch to the CC mode, In the CC mode charging current can be 
set by registers up to 1A.for more details of the register, please refer to related software document. 
 

4.6.2.3

 

Constant voltage mode 

 

While the battery voltage reaches about 4.1V, a constant voltage is used for charging. The charging current is 
gradually decreased step-by-step. The charging process is completed once the current reaches zero automatically. 
Whenever the battery voltage exceeds 4.3V (programmed by SW),a hardware OV protection is activated and turns 
off the charger immediately. 

 

4.6.2.4

 

BAT_ID 

 

SIM5800 provide the battery temperature monitoring function with Pin134 BAT_ID. It needs a 10K Ohm NTC 
resistor , and connect to BAT_ID. In the charging procedure, the voltage on the BAT_ID will be a notice for the 
temperature ,if the temperature is too high or too low, it will stop charging immediately to prevent from battery 
damage. The battery connection is as following. 

 

If customers to use the battery without thermistor, only connect VBAT and GND, at this time in order to prevent 
the system determine the battery temperature anomaly, lead to cannot charge even unbootable, customers should 
connect    BAT_ID pin to GND via 10KR, so that we can make the system think battery temperature within the 
scope of the work, system can normal boot and charging. However, this connection SIMCom is not recommended 
for customers considering abnormal battery temperature. 

Содержание SIMCom SIM5800

Страница 1: ...SIM5800 Hardware Design_V1 01 FCC ID UDV SIM5800...

Страница 2: ...eceiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer...

Страница 3: ...ace 27 4 5 1 USB HOST 28 4 6 Charge management 28 4 6 1 Charger detection 29 4 6 2 Charging Control 29 4 7 UARTs 30 4 8 SD card 31 4 9 LCD interface 32 4 10 Touch panel interface 33 4 11 Camera interf...

Страница 4: ...ange 48 6 3 Operating Voltage 48 6 4 Digital logic Characteristics 48 6 5 PWRKEY characteristics 49 6 6 VRTC Characteristics 49 6 7 Current Consumption VBAT 3 9V 49 6 8 Electro Static Discharge 50 6 9...

Страница 5: ...18 ISINK PARAMETERS 40 TABLE 19 GPIO INTERFACE DEFINITION 41 TABLE 20 KEYPAD INTERFACE 42 TABLE 21 LINE LENGTH OF MIPI INSIDE THE MODULE 45 TABLE 22 LINE LENGTH OF USB INSIDE THE MODULE 46 TABLE 23 LI...

Страница 6: ...5 FIGURE 16 USB REFERENCE CIRCUIT 27 FIGURE 17 USB DOWNLOAD DIAGRAM 27 FIGURE 18 USB_OTG DIAGRAM 28 FIGURE 19 CHARGE DIAGRAM 29 FIGURE 20 BAT_ID DIAGRAM 30 FIGURE 21 TX LEVEL CONVERTING BY TRANSISTOR...

Страница 7: ...Smart Machine Smart Decision SIM5800_Hardware Design_V1 01 7 2018 10 08 Version History Date Version Description of change Author 2018 10 08 1 01 Initial release Jialin Song...

Страница 8: ...front end and required circuitry to support rich multimedia features global location based service wireless connectivity and air interface standards including WCDMA GSM GPRS EDGE With higher integrat...

Страница 9: ...fps 10Mbps HEVC 1080p 30 fps 6Mbps VP9 1080p 30 fps 3Mbps Audio Encode EFR FR HR AMR FR AMR HR Decode MP3 AAC AAC eAAC AMR NB WB G 711 WMA 9 10 Pro UIM card Dual cards dual standby RF GSM850 EGSM900 D...

Страница 10: ...00_Hardware Design_V1 01 10 2018 10 08 11g 15 dBm EVM 25dB 11n 12 dBm EVM 27dB GNSS GPS GLONASS BEIDOU Temperature range Operating temperature 25 75 Storage temperature 40 90 Physical features Dimensi...

Страница 11: ...utput Power Management MT6350 26M XO IIS BUS Primary Camera 5MP 1280 800 LCD Secondary Camera 2MP USB HS Support OTG UIM Card2 SD Card UIM Card1 VBUS_5V VBAT ADC Speaker 3G 2G MODEM Core MODEM Voice P...

Страница 12: ...171 172 173 174 175 176 177 178 191 192 193 194 207 208 209 210 155 156 157 158 159 160 161 162 183 184 185 186 199 200 201 202 RESET MIC_BIAS1 MIC_BIAS0 VCAMA_PMU VCAMD_IO_PMU VCAMD_PMU VCAM_AF_PMU R...

Страница 13: ...2V 1 8V Output 200mA VMCH_PMU 1 38 O Power supply for SD 400mA VMC_PMU 2 32 O Only used pull up for SD card 100mA VCAMD_PMU 161 O 1 8V Output for Camera core 150 mA VCAM_AF_PMU 162 O 2 8V Output for C...

Страница 14: ...nternally USIM1_VDD USIM1_CLK 24 O USIM1 clk USIM1_DAT 25 I O USIM1 data USIM1_VDD 26 P USIM1 power SDIO SD card interface SD_CLK 39 O SDIO clk VMC_PMU SD_CMD 40 I O SDIO command SD_DATA0 41 I O SDIO...

Страница 15: ...I0_CLKN 63 I MIPI signal VIO18_PMU MIPI_CSI0_CLKP 64 I MIPI_CSI0_LN0N 65 I MIPI_CSI0_LN0P 66 I MIPI_CSI0_LN1N 67 I MIPI_CSI0_LN1P 68 I MIPI_CSI1_CLKN 70 I MIPI signal MIPI_CSI1_CLKP 71 I MIPI_CSI1_LN0...

Страница 16: ...e input 1 negative EAR_MICP 6 I Microphone input positive headset GND_ EARMICN 7 P Microphone input negative headset GND REC_P 8 O Earpiece output positive REC_N 9 O Earpiece output negative SPK_P 10...

Страница 17: ...90 I O GPIO GPIO11 93 I O GPIO GPIO12 94 I O GPIO GPIO65 96 I O GPIO GPIO18 97 I O GPIO GPIO19 98 I O GPIO GPIO20 99 I O GPIO GPIO21 100 I O GPIO ISINK3 101 I Constant flow source ISINK2 102 I Consta...

Страница 18: ...9 I Reset keypad VIO18_PMU RESERVED RESERVED 149 159 Internal connection If not used Don t connect anything NC 60 61 110 111 115 123 124 127 131 133 No internal connection 1 VMCH_PMU Connect to PMU in...

Страница 19: ...Smart Machine Smart Decision SIM5800_Hardware Design_V1 01 19 2018 10 08 3 3 Physical dimension Figure 3 Outline drawing unit mm...

Страница 20: ...Smart Machine Smart Decision SIM5800_Hardware Design_V1 01 20 2018 10 08 Figure 4 Recommended PCB footprint unit mm...

Страница 21: ...er is preferable especially when DC input voltage is quite high The reference design is show in Figure 6 and it is recommended to reserve a proper ferrite bead FB101 in Figure 6 in series for EMI supp...

Страница 22: ...143 144 147 148 should be connected to the power GND VRTC pin is the power supply of the RTC circuit in the module When designing the power supply in users application pay more attention to the power...

Страница 23: ...le Turn on off impulse Figure 9 Power on off module using transistor PWRKEY R VBAT 1K PMU Module Figure 10 Power on off module using button The power on timing is illustrated as the following figure 1...

Страница 24: ...efer to the following table for RESET hardware parameters Table 4 Electronic characteristic of the RESET Pin Pin Name Symbol Min Typ Max unit RESET VIH 1 4 V VIL 0 2 V Tpull down TBD TBD s 4 3 VRTC VR...

Страница 25: ...s to effectively eliminate the high frequency interference Table 5 Power Supply Pins Power Name Pin Outpur Voltage V Current mA Application VIO18_PMU 1 125 1 8 150 LCM camera sensor etc VIO28_PMU 2 12...

Страница 26: ...nded that the external current consumption is less than 150mA 2 VIO28_PMU The power supply is used internally PMU has an output capacity 200mA Considering the internal power of the module it is recomm...

Страница 27: ...plete the download In the download stage VBAT of the module can be provided by VCHG but the current limit of this channel is very small only enough for the module to download and the module cannot be...

Страница 28: ...odule does not have the output of 5V power supply Therefore when using this function the customer needs the external circuit to add 5V output The detection order of USB_HOST is as follows when the dev...

Страница 29: ...two steps in this mode While the battery voltage is deeply discharged below 2 2V the trickle charging current is applied to the battery the trickle charging current is about 550ms pulse 70mA current...

Страница 30: ...ng table Table 7 UART pins definition If the voltage of UART is 3 3V customer can use the following reference circuits VIO18_PMU 4 7K 47K TXD 4 7K Module VIO18_PMU RXD VDD Customer Figure 21 TX level...

Страница 31: ...4 8 SD card Table 8 SD interface Refer to the following application circuit 1 DAT2 2 DAT3 3 CMD 4 VDD 5 CLK 6 VSS 7 DAT0 8 DAT1 11 GND 12 GND 13 GND 14 GND 9 DET_SW 10 COMMON SD card SD_DATA2 SD_DATA...

Страница 32: ...interface definition is in the following table Table 9 LCM interface pin definitions MIPI is a high speed signal line In order to avoid EMI interference it is recommended to place the common mode ind...

Страница 33: ...ce The module provides a set of I2C interfaces that can be used to connect capacitive touch panel and provide the required power supply and interrupt pin The default interface pin of capacitive touch...

Страница 34: ...62 O Motor power of module VCAMD_IO_PMU 163 O I O interface level VCAMA_PMU 164 O Analog power The reference circuit of the primary camera is as follows VCAM_AF_PMU VCAMA_PMU VCAMD_PMU VCAMD_IO_PMU AG...

Страница 35: ...positive REC_N 9 O Receiver output negative SPK_P 10 O Speaker output positive SPK_N 11 O Speaker output negative HPH_R 136 O Headphone output right channel HPH_L 138 O Headphone output left channel...

Страница 36: ...reserve ESD devices during the design phase to prevent ESD damage The 139 pin of the module is the interrupt pin through which the user can realize the insert and pull out detection of the headset Sch...

Страница 37: ...x Unit 32 load f 1 kHz 0 dB gain Output power 22 mW SNR 90 dB A THD Pout 2mW Pout 10mW Pout 22mW 80 79 60 dB THD N Pout 2mW Pout 10mW Pout 22mW 78 78 58 dB 16 load f 1 kHz 0 dB gain Output power 33 mW...

Страница 38: ...Pout 0 5Wrms VBAT 4 2V 0 1 0 2 Pout 0 4Wrms VBAT 3 8V 0 1 0 2 Pout 0 3Wrms VBAT 3 4V 0 1 0 2 Efficiency VBAT 4 2V 0 5W 8 68uH 1kHz 85 VBAT 3 8V 0 5W 8 68uH 1kHz 85 Static current 5 mA Reference circu...

Страница 39: ...it 4 13 USIM Card SIM5800 supports dual cards dual standby and card presence detection Table 16 Pin definitions of the USIM Pin Name Pin I O Description USIM2_DET 17 I USIM2 presence detection USIM2_R...

Страница 40: ...00 provides one 12bits ADC Its performance parameters are following Table 17 ADC performance parameters Parameter Min Typ Max Unit Input voltage range 0 1 1 8 V Resolution 12 bits 4 15 Motor Interface...

Страница 41: ...down GPIO GPIO12 94 Pull down GPIO GPIO65 96 Pull down KPROW1 GPIO18 97 Pull down GPIO GPIO19 98 Pull down GPIO GPIO20 99 Pull up GPIO GPIO21 100 Pull down GPIO GPIO84 106 GPIO GPIO83 107 GPIO GPIO82...

Страница 42: ...re good RF performance users should meet the following requirements Keep the RF traces at 50 Maintain a complete and continuous reference ground plane from antenna pin to the RF connector The RF trace...

Страница 43: ...37 GNSSantenna recommended circuit R1 C1 and C2 are antenna matching components in Figure 37 the value of these components are determined according to the antenna tuning results By default R1 is 0 C1...

Страница 44: ...ecommended circuit is shown as Figure 39 RF connector optional C1 Module 77 ANT_WIFI BT GND C2 78 R1 Matching circuit WIFI BT_ ANT 76 GND Figure 39 WiFI BT antenna recommended circuit R1 C1 and C2 are...

Страница 45: ...o connect the antenna please avoid spanning on UIM cards power circuits and high speed digital circuits to minimize the impact of each other 5 2 2 POWER GND Both VBAT and return path should be as shor...

Страница 46: ...m External components should be located near the USB connector Should be routed away from sensitive circuits and signals If there are test points place them on the trace to keep branches as short as p...

Страница 47: ...2 SD_DATA1 13 63 43 SD_DATA2 12 90 44 SD_DATA3 13 05 5 2 7 Audio Isolate from noise sources such as antenna RF signals SMPS clocks and other digital signals with fast transients All audio signal shoul...

Страница 48: ...rature 25 25 75 Storage temperature 45 90 6 3 Operating Voltage Table 26 Operating voltage Parameter Min Typ Max Unit VBAT 3 4 3 9 4 4 V VBUS 4 35 5 5 5 V V_RTC 2 0 3 0 3 25 V 6 4 Digital logic Charac...

Страница 49: ...oltage 0 75 VMCH_PMU VMCH_PMU V VOL Low level output voltage 0 0 125 VMCH_PMU V 6 5 PWRKEY characteristics Table 31 PWRKEY characteristics Parameter Description Min Typ Max Unit VIH High level input v...

Страница 50: ...4 ESD performance parameters Temperature 25 Humidity 45 Pin Contact discharge Air discharge VBAT TBD TBD GND TBD TBD TBD TBD PWRKEY TBD TBD 6 9 Module Operating Frequencies Table 35 Module operating f...

Страница 51: ...m 6 11 Module Receiving Sensitivity Table 37 Conducted receiving sensitivity Band Receiving sensitivity Typ Receiving sensitivity Max GSM850 108dBm 3GPP standard E GSM900 108dBm 3GPP standard DCS1800...

Страница 52: ...Characteristics Table 40 GNSS Main RF Characteristics Output performance DH5 2DH5 3DH5 Output power 9 7 7 dBm Receiving performance Receiving sensitivity DH5 2DH5 3DH5 90 80 80 dBm Receiver type GPS G...

Страница 53: ...e Design_V1 01 53 2018 10 08 Contact us Shanghai SIMCom Wireless Solutions Limited Address Building B No 633 Jinzhong Road Changning District Shanghai P R China 200335 Tel 86 21 3157 5100 3157 5200 Em...

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