1 Preface 1.1 Scope This manual provides the electrical, mechanical and environmental requirements for properly integrating the H350 serials wireless communications module. This manual gives a complete set of hardware features and functions that may be provided by H350, ensures the users can quickly and conveniently develop wireless communications using H350 Module.
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MO / MT Text and PDU modes Cell broadcast Digital Audio Voice Features Voice coders: EFR/HR/FR/AMR Audio Control Gain Control Character Set UCS2 FIBOCOM proprietary AT commands AT Commands GSM 07.05 H350 LGA Serials Module Hardware User Manual Page 8 of 37...
GSM 07.07 Firmware Loader Tool over USB/UART Accessories User Manual Developer Kit 2.3 Appearance The following picture shows the H350 Wireless Communication Module. Top view: Figure 2-1 Top View Bottom view: Figure 2-2 Bottom View H350 LGA Serials Module Hardware User Manual Page 9 of 37...
4.2.2 Pin Description The logic electrical lever of H350 is 1.8V. The following table shows H350 pin description: Pin# Pin Name Description Power Supply VBAT VBAT VBAT Module main power input, voltage range: 3.3V ~ 4.2V VBAT VBAT VBAT 1.8V voltage output inside module VRTC Backup battery power input.
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I2S2_CLK1 I2S2 Clock SCLK1 I2S2_CLK0 I2S2 l Clock SCLK0 (I2S2 use CLK0 by default) I2S2_WA0 I2S2 word alignment select I2S2_TX I2S2 transmit line I2S2_RX I2S2 receive line USB_DP USB data line+ USB_DM USB data line- USB_ID — USB ID line VUSB USB Power Input USB_TEST...
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UART2_RXD UART2 Received Data ADC1 Analog digital converter 1 EINT WAKE_UP External wake-up interrupt, Low activity. EINT2 External interrupt, Low activity. USB HSIC HSIC_USB_DATA HSIC USB data signal ( not supported) HSIC_USB_STRB HSIC USB pulse signal ( not supported) Antenna antenna interface, 50 ohm Impedance Others CLKOUT0...
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5 Hardware Interface 5.1 Power Interface 5.1.1 VBAT H350 module requires a 3.3 V~ 4.2V DC power supply to provide 2A as GSM transmitter maximum current. Input power supply requirements: Parameter Minimum Value Recommended Value Maximum Value Unit VBAT Note: 1.
TX slot GSM voice - 67.7 DCS1800 PCL=10 1Rx slot 109.6 TX slot 24dBm 442.0 0dBm 131.2 Band1 -24dBm 120.6 -50dBm 118.7 IWCDMA-RMS WCDMA 24dBm 421.9 0dBm 128.6 Band8 -24dBm 121.8 -50dBm 120.2 5.1.3 VIO VIO is power supply for the digital portion of the circuit inside of the module; it can be used for indicating signal of the module.
VRTC Reference design: Figure 5-1 VRTC Reference Design Note: R8 is the current-limiting resistance in order to ensure VRTC working normally. R8 ≥1kohm VRTC Current consumption < 2uA; C9 value can affect RTC hold time You can refer to the following formula to calculate the RTC hold time: T= (1.8-0.5)*C/1=1.3C, unit: s ...
Timing control: VBAT POWER_ON 300mS VDD_1V8 Figure 5-2 Timing Control Reference design: Figure 5-3 POWER_ON Reference Design 5.2.3 Power off Signal After lower down POWER_OFF signal, the power manage unit (PMU) of module is reset, module changes to shutdown status. Parameter Condition Minimum Value...
Reference design: Figure 5-5 POWER_OFF Reference Design 5.2.4 Reset Signal H350 wireless communication module supports external reset; it can restore the module to default settings through Reset signal. When Reset signal is Active Low by 100ms, the module will reset and restart. When users reset the module, PMU inside the module is still on.
5.3 Indicator Signal 5.3.1 Pin Description Pin# Pin Name Description Work mode indicator Sleep Mode Indicator WAKE_UP Wake up module 5.3.2 Indicator Description 5.3.2.1 LPG Signal LPG signal description: Status Mode idle(unregistered 600ms high level, 600ms low level idle(registered) 75ms high level, 3S low level Call low level Data communicating...
5.4 USB Interface 5.4.1 USB Interface Description Pin# Pin Name Description USB_DP USB signal+ USB_DM USB signal- USB_ID — USB ID signal (NC is recommended) VUSB USB power input USB_TEST — USB TEST signal (NC is recommended) H350 wireless communication module supports USB 2.0. Install the corresponding USB driver before use on PC. After H350 wireless communication module plugged into the PC, the USB can map seven ports: One 3G Modem/AT port for data operation ...
USB_DP and USB_DM are high speed lines, the highest transmit speed is 480 Mbps. PCB Layout notice: Note: USB_DP and USB_DM lines need equal length, parallel, as short as possible. The input and output need GND isolation. The layout design of this circuit on the AP board should comply with the USB 2.0 high speed protocol, with ...
UART2 Pin# Pin Name Description UART2_RXD UART2 Transmitted Data UART2_TXD UART2 Received Data 5.5.2 UART Design The following table show the signal direction when H350 wireless communication module (DCE) UART1 connects to PC (DTE): Application MCU(DTE) Signal Direction H350 Module (DCE) UART1_TXD UART1_RXD UART1_CTS...
5.5.3 Ring Indicator UART1_R1 is used for indicating incoming call and SMS, sending pulse to host application program. Operation Mode Status Default mode Low level Ringing 1s high level, 1s low level, cycling Incoming message 150ms pulse 5.6 USIM H350 wireless communication module supports USIM and high speed SIM card, does not support 8 line smart USIM yet.
5.6.2 USIM Design Reference design: Figure 5-8 USIM Interface Reference Circuit Note: For better EMC performance, SIM card holder should be close to module Filtering capacitor should be close to SIM card pin The interface need add ESD protection, ESD should be close to SIM card pin ...
5.6.4 USIM Hot Plug H350 supports SIM hot plug. 5.6.4.1 Hardware Connection SIM hot plug function interacts with USIM_CD signal. When no SIM card, USIM_CD is high level; insert SIM, USIM_CD is low level. As shown in Figure5-8, USIM_CD connect Pin8 (SW2) of U2, Pin7 (SW1) connect GND. When no SIM card, SW2 is high level;...
5.7.1 I2S H350 Signal Direction Audio CODEC I2S Port I2S2_CLK0 I2S_CLK I2S2_WA0 I2S_LRCK I2S2_RX I2S_SDIN I2S2_TX I2S_SDOUT CLKOUT0 I2S_MCLK 5.7.2 I2C H350 Signal Direction Audio CODEC I2C Port I2C_SDA I2C_SDA I2C_SCL I2C_SCL Note: I2S can work in master mode or slave mode ...
It supports various audio sample rates (48 KHz, 44.1 KHz, 32 KHz, 24 KHz, 22.5 KHz, 16 KHz, 12 KHz, 11.025 KHz and 8 KHz). 5.8 ADC Interface H350 supports ADC detection, with accuracy to 10 bit. The input voltage requirement for ADC: 0~1.2V. The following table shows the ADC signal description: Pin# Pin Name...
6 Electrical and Environmental Features 6.1 Electrical Features This table shows the electrical features range of H350. Parameter Minimum Value Maximum Value Unit VBAT Digital Signal 6.2 Environmental Features This table shows the environmental features of H350. Parameter Minimum Value Maximum Value Unit Operational Temperature...
7 RF Interface 7.1 Operation Frequency Band 7.1.1 Main Antenna Operating Band UMTS 2100 (Band I IMT) 1920–1980 MHz 2110–2170 MHz UMTS 900 (Band II GSM) 880–915 MHz 925–960 MHz GSM 900 880–915 MHz 925–960 MHz DCS 1800 1710–1785 MHz 1805–1880 MHz 7.2 RF PCB Design 7.2.1 Layout Guideline...
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coupling loss. Efficiency of the master antenna > 40% (–4dB) (2) S11 or VSWR S11 (return loss) indicates the degree to which the input impedance of an antenna matches the reference impedance (50 ohm). S11 shows the resonance feature and impedance bandwidth of an antenna. Voltage standing wave ratio (VSWR) is another expression of S11.
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TIS ( Total Isotropic Sensitivity W900<-102dBm W2100<-103dBm GSM900<-102dBm DCS1800<-102dBm H350 LGA Serials Module Hardware User Manual Page 37 of 37...