802.11 b/g/n Wi-Fi module User manual Rev0 QFM-2202 Revision history 0 12/20/2014 1. 2. 3. 4. 5. 6. Initial version Overview Features Hardware specification 3.1 System block diagram 3.2 Module signal description 3.3 Module GPIO pin functions 3.4 Electrical characteristics 3.5 Power up sequence 3.6 Power consumption 3.
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2. Features Operating voltage : 3.3V Operating temperature : 0 - 85 °C CPU Cortex-M4 @ 120MHz o Flash 512KB 128KB o Memory Wi-Fi system o IEEE 802.11b/g/n o Single stream 1x1 o Single-band 2.4GHz o Green Tx power saving mode o Low power listen mode o Data rates up to 150Mbps o Data rates up to 1-52Mbps for 802.11 b/g, data rates up to 150Mbps for 802.11n (MCS0-7).
3. Hardware Specification 3.1 System block diagram VDD_MCU VDD33 24MHz XTAL 40MHz XTAL 4Mb SPI Flash 2 x UART 1 x USB 1 x I2S 2.
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Signal name GND VDD_MCU VDD33 RSV USB_MCU_DM USB_MCU_DP ADC0_DP0 ADC0_DP3 DAC0_OUT nRESET EZP_nCS ¹ SPI1_EXT_CS0 SPI1_EXT_SIN SPI1_EXT_SOUT SPI1_EXT_CLK JTAG_MCU_TCLK JTAG_MCU_TDI JTAG_MCU_TDO JTAG_MCU_nTRST JTAG_MCU_TMS I2C1_DAT I2C1_CLK I2C0_DAT I2C0_CLK MCU_UART0_RXD MCU_UART0_RTS MCU_UART0_CTS MCU_UART0_TXD MCU_UART1_RXD MCU_UART1_TXD MCU_UART1_CTS MCU_UART1_RTS I2S0_TXD0 I2S0_TX_BCLK I2S0_TX_FS I2S0_RXD0 I2S0_RX_BCLK I2S0_MCLK Table-1 QFM-2202 pin assignment and description Pin Type Description 1,
I2S0_RX_FS 46 DIO ² MCU_GPIO5 37 DIO ² internally generated. Receive Frame Sync. The frame sync is an input sampled synchronously by the bit clock when externally generated and an output generated synchronously by the bit clock when internally generated. ¹ Minimum 2 bus clock cycles of EZP_nCS=0 after reset will force K22 enter into EZP mode. ² All IOs are with multiplexed functions. See table-2 for details.
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VDD33 TSTG TA QCA4002 Supply Voltage Storage temperature Operating Temperature 3.14 - 40 0 3.4.3 DC electrical characteristics Table-5 QFM-2202 DC electrical characteristics Symbol Description Min. VIH Input High Voltage 0.7 x VDD_MCU VIL Input Low Voltage — VOH Output high voltage 3.46 135 85 V °C °C Max. — 0.35 x VDD_MCU Unit V V Normal drive pad (IOH = -5mA) VDD_MCU - 0.5 — V VDD_MCU - 0.5 — High drive pad (IOH = -20mA) VOL Output low voltage — 0.5 V Normal drive pad (IOH = 5mA) — 0.
Figure-4 QFM-2202 power up sequence 3.6 Power consumption 3.6.1 Operating power consumption Table-6 QFM-2202 operating power consumption Mode Standard Rate Typ Tx 11b 1 247.6 11 241.2 11g 6 246.1 54 210.6 11n HT20 MCS0 263.0 MCS7 217.3 11n HT40 MCS0 221.5 MCS7 195.5 Rx All rates 66.7 Unit mA mA 3.6.2 Standby power consumption Table-7 QFM-2202 standby power consumption Mode State Typical current consumption for SPI/UART at 3.
3.7 RF characteristics RF 3.7.1 Wireless LAN radio configuration and general specifications Table-8 Wireless LAN radio configuration and general specifications Item Specification Country/Domain Code ¹ Reserved Center Frequency 11b 2.412-2.472 11g 2.412-2.472 11n HT20 2.412-2.472 11n HT40 2.422-2.452 Rate 11b 1, 2, 5.
HT40 MCS2 MCS3 MCS4 MCS5 MCS6 MCS7 MCS0 MCS1 MCS2 MCS3 MCS4 MCS5 MCS6 MCS7 ¹ Performance measured at the balun. Loss from balun to antenna connector in the test board is 1.2 dB (2.4GHz).
4. Layout guide 1)The antenna area should be towards outside of base board. The distance from pin1 or pin47 to edge of board should be smaller than 2mm. 2)Red rectangle is the clearance area: on the base board, top and internal layers of the red rectangle should have no shapes or clines; the bottom layer of the red rectangle should have a whole ground shape.
5. Mechanical interface specification 5.
Figure-8 QFM-2202 module dimensions side view (unit: mm)
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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 equipment has been tested and found to comply with the limits for a Class B digi tal device, pursuant to part 15 of the FCC rules.
transmitter product procedures. 2. Only those antennas with same type and lesser gain filed under this FCC ID number c an be used with this device. 3. The regulatory label on the final system must include the statement: “Contains FCC I D: RUN-QFM2202“. 4.