A7608SA-H_User Manual_V1.
Smart Machine Smart Decision Document Title A7608SA-H_User Manual Version 1.00 Date 2022-08-26 Status Released Document Control ID A7608SA-H_User Manual_V1.00 RF Exposure Statement: For the product,under normal use condition is at least 20cm away from the b ody o f the user,the user must keeping at least 20cm distance to the product. Note that the module was assessed for use with cables of less than 3m length and not for use in automotive environments.
Smart Machine Smart Decision encouraged to try to correct the interference by one or more of the following measures: -- Reorient or relocate the receiving 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 or an experienced radio/TV technician for help. Exposure to Radio Frequency Radiation.
Smart Machine Smart Decision Contents Contents............................................................................................................................................... 5 Table Index.......................................................................................................................................... 7 Figure Index.........................................................................................................................................
Smart Machine Smart Decision 3.13.2 ADC.................................................................................................................................. 43 3.13.3 LDO.................................................................................................................................. 43 4 RF Specifications............................................................................................................................44 4.1 UMTS/LTE RF Specifications..................
Smart Machine Smart Decision Table Index Table 1: A7608SA-H frequency bands.................................................................................................................11 Table 2: General features......................................................................................................................................14 Table 3: Pin definition.......................................................................................................................................
Smart Machine Smart Decision Table 44: Safety Caution...................................................................................................................................... 69 A7608SA-H_User Manual_V1.
Smart Machine Smart Decision Figure Index Figure 1: A7608SA-H block diagram.................................................................................................................. 13 Figure 2: Pin assignment overview...................................................................................................................... 16 Figure 3: Dimensions (Unit: mm)........................................................................................................................
Smart Machine Smart Decision Revision History Data Version Description of change Author 2020-08-26 1.00 Original Ma Honggang Tianbao Yi A7608SA-H_User Manual_V1.
Smart Machine Smart Decision 1 Introduction This document describes the electronic specifications, RF specifications, interfaces, mechanical characteristics and testing results of the SIMCom A7608SA-H module. With the help of this document and other software application notes/user guides, users can understand and use module to design and develop applications quickly. 1.1 Product Outline Aimed at the Europe market, the A7608SA-H module supportGSM, WCDMA and LTE.
Smart Machine Smart Decision ● ● ● ● ● ● ● ● ● SDIO Interface USIM Interface GPIO ADC LDO Power Output Current Sink Source PCM Interface SPI Interface I2C Interface A7608SA-H_User Manual_V1.
Smart Machine Smart Decision 1.3 Hardware Block Diagram The block diagram of the A7608SA-H module is shown in the figure below. Figure 1: A7608SA-H block diagram A7608SA-H_User Manual_V1.
Smart Machine Smart Decision 1.4 Functional Overview Table 2: General features Feature Implementation Power supply Single supply voltage 3.4～4.2V Power saving Radio frequency bands Current in sleep mode : <5mA Please refer to the table 1 UMTS power class: --WCDMA :3 (0.25W) LTE power class: 3 (0.25W) Transmitting power Data Transmission Throughput UMTS R99 speed: 384 kbps DL/UL HSPA+: 5.76 Mbps(UL), 42 Mbps(DL) HSDPA/HSUPA: 2.2 Mbps(UL), 2.
Smart Machine Smart Decision Firmware upgrade Firmware upgrade over USB interface Physical characteristics Size:30*30*2.9m Weight:5.7 g Temperature range Normal operation temperature: -30°C to +80°C Extended operation temperature: -40°C to +85°C* Storage temperature -45°C to +90°C *Note: Module is able to make and receive voice calls, data calls, SMS and make GPRS /EGPRS/UMTS/HSPA+/LTE traffic in -40℃ ~ +85℃.
Smart Machine Smart Decision 2 Package Information 2.1 Pin Assignment Overview All functions of the A7608SA-H will be provided through 87 pads that will be connected to the customers’ platform. The following Figure is a high-level view of the pin assignment of the A7608SA-H. Figure 2: Pin assignment overview A7608SA-H_User Manual_V1.
Smart Machine Smart Decision Table 3: Pin definition Pin No. Pin name Pin No.
Smart Machine Smart Decision 69 RI 70 DCD 71 TXD 72 DTR 73 PCM_OUT 74 PCM_IN 75 PCM_SYNC 76 PCM_CLK 77 GND 78 GND 79 GNSS_ANT 80 GND 81 GND 82 MAIN_ANT 83 COEX1* 84 COEX2 85 BOOT_CFG0* 86 COEX3* 87 GPIO77 NOTE: Before the normal power up, GPIO43，COEX1, COEX3 and BOOT_CFG0 cannot be pulled up. 2.
Smart Machine Smart Decision command）. VDD_1V8 15 GND 1,2,5, 10,14,37 ,40,41,4 3,57,58, 60,61,64 ,65,77,7 8,80,81 PO 1.8V SMPS output with Max 50mA current output for external circuit, such as level shift circuit. If unused, keep it open. Ground System Control DI,PU System power on/off control input, active low. The high voltage is 0.8V; 4 DI, PU System reset control input, active low. RESET has been pulled up to 1.8V via 40Kohm resistor internally.
Smart Machine Smart Decision SPI_CS 9 DO SPI chip-select output USB_VBUS 11 DI,PD Valid USB detection input with 3.0~5.25V detection voltage USB_DN 12 I/O Negative line of the differential, bi-directional USB signal. USB_DP 13 I/O USB_ID 16 DI Positive line of the differential, bi-directional USB signal.
Smart Machine Smart Decision Mode Low level: Flight Mode Operating status output. High level: Power on and firmware ready Low level: Power off STATUS 49 DO GPIO41 52 IO GPIO GPIO43 50 IO GPIO GPIO3 33 IO GPIO GPIO6 34 IO GPIO NORMAL UP! POWER Default: GPIO Optional: SD card detecting input. H: SD card is removed L: SD card is inserted Default: GPIO Optional: USIM card detecting input.
Smart Machine Smart Decision 2.3 Mechanical Information The following figure shows the package outline drawing of A7608SA-H. Figure 3: Dimensions (Unit: mm) A7608SA-H_User Manual_V1.
Smart Machine Smart Decision 2.4 Footprint Recommendation Figure 4: Footprint recommendation (Unit: mm) A7608SA-H_User Manual_V1.
Smart Machine Smart Decision 3 Interface Application 3.1 Power Supply The power supply pins of A7608SA-H include 4 pins (pin 62&63, pin 38&39) named VBAT. The 4 VBAT pads supply the power to RF and baseband circuits directly. On VBAT pads, theripple current up to 2A typically, due to GSM/GPRS emission burst (every 4.615ms), may cause voltage drop. So the power supply for these pads must be able to provide sufficient current up to more than 2A in order to avoid the voltage drop is more than 300mV.
Smart Machine Smart Decision 3.1.1 Power Supply Design Guide Make sure that the voltage on the VBAT pins will never drop below 3.4V, even during a transmit burst, when current consumption may rise up to 2A. If the voltage drops below 3.4V, the RF performance may be affected.
Smart Machine Smart Decision 3.1.2 Recommended Power Supply Circuit It is recommended that a switching mode power supply or a linear regulator power supply is used. It is important to make sure that all the components used in the power supply circuit can resist a peak current up to 2A. The following figure shows the linear regulator reference circuit with 5V input and 3.8V output.
Smart Machine Smart Decision 3.2 3.2.1 Power on/Power off/Reset Function Power on A7608SA-H can be powered on by pulling the PWRKEY pin down to ground. The PWRKEY pin has been pulled up with a diode to 1.8V internally, so it does not need to be pulled up externally. It is strongly recommended to put a100nF capacitor, an ESD protection diode, close to the PWRKEY pin as it would strongly enhance the ESD performance of PWRKEY pin. Please refer to the following figure for the recommended reference circuit.
Smart Machine Smart Decision Table 8: Power on timing and electronic characteristic Symbol Ton Ton(status) Ton(uart) Ton(usb) VIH VIL 3.2.2 Parameter Min. The time of active low level impulse of PWRKEY 100 pin to power on module The time from power-on issue to STATUS pin 12 output high level(indicating power up ready ) The time from power-on issue to UART port ready 11 Typ. Max.
Smart Machine Smart Decision Figure 11: Power off timing sequence Table 9: Power off timing and electronic characteristic Symbol Parameter Toff Time value Unit Min. Typ. Max. The active low level time pulse on PWRKEY pin to power off module 2.
Smart Machine Smart Decision Table 10: RESET pin electronic characteristic Symbol Description Min. Typ. Max. Unit Treset The active low level time impulse on RESET pin to reset module 50 100 500 ms VIH Input high level voltage 1.17 1.8 2.1 V VIL Input low level voltage -0.3 0 0.8 V 3.3 UART Interface A7608SA-H provides a 7-wire UART (universal asynchronous serial transmission) interface as DCE (Data Communication Equipment).
Smart Machine Smart Decision The A7608SA-H UART is 1.8V voltage interface. If user’s UART application circuit is 3.3V voltage interface, the level shifter circuits should be used for voltage matching. The TXB0108RGYR provided by Texas Instruments is recommended. The following figure shows the voltage matching reference design. VDD_1V8 or External 1V8 100nF MODULE TXD RXD RTS CTS DTR DCD RI 100nF VCCA VCCB OE GND 47K UART port 3.
Smart Machine Smart Decision Normally RI will be kept at a high level until a voice call, then it will output periodic rectangular wave with 5900ms low level and 100ms high level. It will output this kind of periodic rectangular wave until the call is answered or hung up. Figure 17: RI behaviour（voice call） Note: For more details of AT commands about UART, please refer to document [1] and [22]. DTR pin can be used to wake A7608SA-H from sleep.
Smart Machine Smart Decision add a ZENER diode for surge clamping. The recommend diodes please refer to table 7. Note：The USB_DN and USB_DP nets must be traced by 90Ohm+/-10% differential impedance. 3.5 USIM Interface A7608SA-H supports both 1.8V and 3.0V USIM Cards. Table 11: USIM electronic characteristic in 1.8V mode (USIM_VDD=1.8V) Symbol Parameter Min. Typ. Max. Unit USIM_ VDD LDO power output voltage 1.75 1.8 1.95 V VIH High-level input voltage 0.65*USIM_VDD - USIM_VDD +0.
Smart Machine Smart Decision Figure 19: USIM interface reference circuit Note: USIM_DATA has been pulled up with a 100KΩ resistor to USIM_VDD in module. A 100nF capacitor on USIM_VDD is used to reduce interference. For more details of AT commands about USIM, please refer to document [1].USIM_CLK is very important signal, the rise time and fall time of USIM_CLK should be less than 40ns, otherwise the USIM card might not be initialized correctly. A7608SA-H_User Manual_V1.
Recommended USIM Card Holder Smart Machine Smart Decision It is recommended to use the 6-pin USIM socket such as C707 10M006 512 produced by Amphenol. User can visit http://www.amphenol.com for more information about the holder. Figure 20: Amphenol SIM card socket Table 13: Amphenol USIM socket pin description Pin C1 C2 C3 C5 C6 C7 Signal USIM_VDD USIM_RST USIM_CLK GND VPP USIM_DATA A7608SA-H_User Manual_V1.00 Description USIM Card Power supply. USIM Card Reset. USIM Card Clock. Connect to GND.
Smart Machine Smart Decision 3.6 PCM Interface A7608SA-H provides a PCM interface for external codec, which can be used in master mode with short sync and 16 bits linear format. Table 14: PCM format Characteristics Specification Line Interface Format Linear(Fixed) Data length 16bits(Fixed) PCM Clock/Sync Source Master Mode(Fixed) PCM Clock Rate 2048 KHz (Fixed) PCM Sync Format Short sync(Fixed) Data Ordering MSB Note: For more details about PCM AT commands, please refer to document [1]. 3.
Smart Machine Smart Decision Figure 23: Module to EXT codec timing Table 15: PCM timing parameters Parameter Description Min. Typ. Max. Unit T(sync) PCM_SYNC cycle time – 125 – μs T(synch) PCM_SYNC high level time – 488 – ns T(syncl) PCM_SYNC low level time – 124.
Smart Machine Smart Decision 3.6.2 PCM Application Guide The following figure shows the external codec reference design. Figure 24: Audio codec reference circuit 3.7 SD Interface A7608SA-H provides a 4-bit SD/MMC interface with clock rate up to 200 MHz, The voltage of MMC/SD interface is 2.95V, which is compatible with SDIO Card Specification (version 3.0) and Secure Digital (Physical Layer Specification, version 3.0).It supports up to 32GB SD cards.
Smart Machine Smart Decision Figure 25: SD reference circuit SD card layout guide lines: ● Protect other sensitive signals/circuits from SD card signals. ● Protect SD card signals from noisy signals (clocks, SMPS, etc.).
Smart Machine Smart Decision Figure 26: I2C reference circuit Note：SDA and SCL do not have pull-up resistors in module. So, 2 external pull up resistors are needed in application circuit. “AT+CRIIC and AT+CWIIC” AT commands could be used to read/write register values of the I2C peripheral devices. For more details about AT commands please refer to document [1]. 3.9 SDIO Interface A7608SA-H provides a 4 bit 1.8V SDIO interface for WLAN solution.
Smart Machine Smart Decision Table 17: NETLIGHT pin status NETLIGHT pin status Module status Always On Searching Network; Call Connect(include VOLTE,SRLTE) 200ms ON, 200ms OFF Data Transmit; 4G registered; 800ms ON, 800ms OFF 2G/3G registered network OFF Power off ;Sleep Note: NETLIGHT output low level as “OFF”, and high level as “ON”. 3.12 Flight Mode Control The FLIGHTMODE pin can be used to control A7608SA-H to enter or exit the Flight mode.
Smart Machine Smart Decision 3.13 Other interface 3.13.1 Sink Current Source The ISINK pin is VBAT tolerant and intended to drive some passive devices, such as LCD backlight and white LED, etc. Its output current can be up to 40mA and be set by the AT command “AT+ CLEDITST”. Table 19: Sink current electronic characteristic Symbol Description Min. Typ. Max. Unit VISINK Voltage tolerant 0.5 - VBAT V IISINK Current tolerant 0 - 40 mA ISINK is a ground-referenced current sink.
Smart Machine Smart Decision 3.13.2 ADC A7608SA-H has 2 dedicated ADC pins named ADC1 and ADC2.They are available for digitizing analog signals such as battery voltage and so on. These electronic specifications are shown in the following table. Table 20: ADC1 and ADC2 electronic characteristics Characteristics Resolution Conversion time Input Range Min. Max. – Typ. 15 – 442 – Input serial resistance 1 0.1 – 1.
Smart Machine Smart Decision 4 RF Specifications 4.1 UMTS/LTE RF Specifications Table 22: Operating frequencies Frequency Receiving Transmission WCDMA B2 WCDMA B5 1932.4-1987.6 MHz 871.4-891.6MHz 1852.4-1907.6 MHz 826.4-846.6 MHz The LTE Operating frequencies are shown in the following table 24. GPS 1574.4 ～1576.
Smart Machine Smart Decision E-UTRA band 3GPP standard Test value 3GPP standard 1.4 MHz 3MHz 5MHz 10MHz 10 MHz 15 MHz 20 MHz 2 -102 -99 -96.3 -94.3 -97 -92.5 -91.3 FDD 4 -104 -101 -99.3 -96.3 -99 -94.5 -93.3 FDD 5 -103.2 -100.2 -98 -95 -99 -97.3 -94.3 -97 -92.5 -91.3 TDD -99.3 -96.3 -99 -94.5 -93.3 FDD 41 66 -104 -101 A7608SA-H_User Manual_V1.
Smart Machine Smart Decision 4.2 UMTS/LTE Antenna Design Guide Users should connect antennas to A7608SA-H’s antenna pads through micro-strip line or other types of RF trace and the trace impedance must be controlled in 50Ω. SIMCom recommends that the total insertion loss between the antenna pads and antennas should meet the following requirements: Table 26: Trace loss Frequency Loss 700MHz-960MHz <0.5dB 1710MHz-2170MHz <0.9dB 2300MHz-2650MHz <1.
Smart Machine Smart Decision Figure 31: Antenna matching circuit (AUX_ANT) In above figure, R3, C3, C4 and R4 are used for auxiliary antenna matching. By default, the R3, R4 are 0Ωresistors, and the C3, C4 are reserved for tuning. D2 is a TVS for ESD protection, and it is optional for users according to application environment. Two TVS are recommended in the table below.
Smart Machine Smart Decision Cold-start sensitivity: -148 dBm Accuracy (Open Sky): 2.5m (CEP50) TTFF (Open Sky) : Hot start <1s, Cold start<35s Receiver Type: 16-channel, C/A Code GPS L1 Frequency: 1575.42±1.023MHz GLONASS: 1597.5~1605.
Smart Machine Smart Decision Figure 33: Passive antenna circuit (Default) In above figures, the components C1, L1 and L2 are used for antenna matching. Usually, the values of the components can only be achieved after antenna tuning and usually provided by antenna vendor. C2 is used for DC blocking. L3 is the matching component of the external LNA, and the value of L3 is determined by the LNA characteristic and PCB layout.
Smart Machine Smart Decision 5 Electrical Specifications 5.1 Absolute maximum ratings Absolute maximum rating for digital and analog pins of A7608SA-H are listed in the following table: Table 28: Absolute maximum ratings Parameter Voltage at VBAT Voltage at USB_VBUS Voltage at digital pins (RESET,SPI,Keypad,GPIO,I2C,UART,PCM) Voltage at digital pins (SD,USIM) Voltage at PWRKEY 5.2 Min. -0.5 -0.5 Typ. - Max. 6.0 5.85 Unit V V -0.3 - 2.1 V -0.3 -0.3 - 3.05 1.8 V Min. 3.4 3.0 Typ. 3.8 5.
Smart Machine Smart Decision VOH High-level output voltage 1.35 - 1.8 V VOL Low-level output voltage 0 - 0.
Smart Machine Smart Decision FR/EFR/HR, hopping sequences, and antenna. UMTS/LTE Standby Module is ready for data transmission, but no data is currently sent or received. In this case, power consumption depends on network settings. UMTS/LTE Data transmission There is data transmission in progress. In this case, power consumption is related to network settings (e.g. power control level); uplink/downlink data rates, etc.
Smart Machine Smart Decision ● AT+CFUN=4: Flight mode If A7608SA-H has been set to minimum functionality mode, the RF function and USIM card function will be closed. In this case, the serial port and USB are still accessible, but RF function and USIM card will be unavailable. If A7608SA-H has been set to flight mode, the RF function will be closed. In this case, the serial port and USB are still accessible, but RF function will be unavailable.
Smart Machine Smart Decision Antenna port +/-5K +/-10K USB +/-4K +/-8K UART +/-3K +/-6K Other PADs +/-3K +/-6K A7608SA-H_User Manual_V1.
Smart Machine Smart Decision 6 SMT Production Guide 6.1 Top and Bottom View of A7608SA-H Figure 34: Top and bottom view of A7608SA-H A7608SA-H_User Manual_V1.
Smart Machine Smart Decision 6.2 Label Information Figure 35: Label information Table 35: The description of label information No. Description A LOGO B Module part number C Project name D Serial number E International mobile equipment identity F QR code 6.3 Typical SMT Reflow Profile SIMCom provides a typical soldering profile.
Smart Machine Smart Decision constraints. Figure 36: The ramp-soak-spike reflow profile of A7608SA-H Note: For more details about secondary SMT, please refer to the document [21]. 6.4 Moisture Sensitivity Level (MSL) A7608SA-H is qualified to Moisture Sensitivity Level (MSL) 3 in accordance with JEDEC J-STD033. If the prescribed time limit is exceeded, users should bake modules for 192 hours in drying equipment (<5% RH) at 40+5/-0°C, or 72 hours at 85+5/-5°C.
Smart Machine Smart Decision 6.5 Stencil Foil Design Recommendation The recommended thickness of stencil foil is more than 0.15mm. A7608SA-H_User Manual_V1.
Smart Machine Smart Decision 7 Packaging A7608SA-H module support tray packaging. Figure 37: packaging diagram Module tray drawing： Figure 38: Tray drawing A7608SA-H_User Manual_V1.
Smart Machine Smart Decision Table 37: Tray size Length（±3mm） Width（±3mm） Numbe r 161.0 15 242. 0 Small carton drawing： Figure 39: Small carton drawing Table 38: Small Carton size Length（±10mm） Width（±10mm） 270 180 Height（±10mm） Number 120 15*20=300 Big carton drawing： Figure 40: Big carton drawing Table 39: Big Carton size A7608SA-H_User Manual_V1.
Length（±10mm） Width（±10mm） A7608SA-H_User Manual_V1.
Smart Machine Smart Decision 380 280 280 300*4=1200 Appendix A. Reference Design Refer to < SIM7600 Reference Design V1.X.pdf > for the details.
Smart Machine Smart Decision Figure 41: Reference design B. Coding Schemes and Maximum Net Data Rates over Air Interface Table 40: Coding Schemes and Maximum Net Data Rates over Air Interface Multislot definition(GPRS/EDGE) Slot class DL slot number UL slot number Active slot number 1 2 3 4 5 6 7 8 9 10 11 12 1 2 2 3 2 3 3 4 3 4 4 4 1 1 2 1 2 2 3 1 2 2 3 4 2 3 3 4 4 4 4 5 5 5 5 5 GPRS coding scheme Max data rata（4 slots） Modulation type CS 1 = 9.05 kb/s / time slot 36.2 kb/s GMSK CS 2 = 13.
Smart Machine Smart Decision Category 5 3.6Mbps 16QAM,QPSK Category 6 3.6Mbps 16QAM,QPSK Category 7 7.2Mbps 16QAM,QPSK Category 8 7.2Mbps 16QAM,QPSK Category 9 10.2Mbps 16QAM,QPSK Category 10 14.4Mbps 16QAM,QPSK Category 11 0.9Mbps QPSK Category 12 1.8Mbps QPSK Category 13 17.6Mbps 64QAM Category 14 21.1Mbps 64QAM Category 15 23.4Mbps 16QAM Category 16 28Mbps 16QAM Category 17 23.4Mbps 64QAM Category 18 28Mbps 64QAM Category 19 35.
Smart Machine Smart Decision Category 2 25Mbps QPSK/16QAM Category 3 50Mbps QPSK/16QAM Category 4 50Mbps QPSK/16QAM A7608SA-H_User Manual_V1.
Smart Machine Smart Decision C. Related Documents Table 41: Related Documents NO. [1] [2] Title SIM7500_SIM7600 Series_AT Command Manual_V1.xx ITU-T Draft new recommendationV.25ter Description AT Command Manual Serial asynchronous automatic dialing and control Digital cellular telecommunications (Phase 2+); AT command set for GSM Mobile Equipment (ME) Support GSM 07.
Smart Machine Smart Decision portable (UE) radio and ancillary equipment [17] IEC/EN60950-1(2001) Safety of information technology equipment (2000) [18] 3GPP TS 51.010-1 Digital cellular telecommunications system (Release 5); Mobile Station (MS) conformance specification [19] GCF-CC V3.23.1 Global Certification Forum - Certification Criteria [20] 2002/95/EC [21] [22] Module secondary-SMT-UGD-V1.xx SIM7X00 Series_UART_Application Note_V1.
Smart Machine Smart Decision D.
RF RMS RTC SIM SMS SPI SMPS TDMA TE TX UART VSWR SM NC EDGE HSDPA HSUPA ZIF WCDMA VCTCXO USIM UMTS UART Smart Machine Smart Decision Radio Frequency Root Mean Square (value) Real Time Clock Subscriber Identification Module Short Message Service serial peripheral interface Switched-mode power supply Time Division Multiple Access Terminal Equipment, also referred to as DTE Transmit Direction Universal Asynchronous Receiver & Transmitter Voltage Standing Wave Ratio SIM phonebook Not connect Enhanced data rat
Smart Machine Smart Decision E. Safety Caution Table 43: Safety Caution Marks Requirements When in a hospital or other health care facility, observe the restrictions about the use of mobiles. Switch the cellular terminal or mobile off, medical equipment may be sensitive and not operate normally due to RF energy interference. Switch off the cellular terminal or mobile before boarding an aircraft. Make sure it is switched off.
