FD7255S
Interface: SDIO
Wi-Fi/Bluetooth: Wi-Fi 6; Bluetooth 5.0
Frequency Bands: 2.4 GHz; 5 GHz
Antenna: 1T1R (1 Transmit 1 Receive)
Maximum Physical Layer Data Rate: 286.8 Mbps
Bandwidth: 40 MHz
Throughput Rate: 260 Mbps
Certifications: SRRC/ROHS/CE/FCC
Dimensions: 12 mm * 12 mm
| Product Name | FD7255S | ||
| Product description | 802.11ax/ac/a/b/g/n 1T1R dual band Wi-Fi and Bluetooth 5.0 comb module | ||
| Dimension | 12.0(±0.1)mm*12.0(±0.1)mm*1.65(±0.2)mm | ||
| Power supply | VBAT：3.0~3.6V；VDDIO：1.62V~1.92V/3.0V~3.6V | ||
| Host interface | SDIO3.0 + UART + PCM | ||
| Footprint | LCC 44pin | ||
| Operating temperature | -30°C to 70°C | ||
| Operating humidity | 10% to 90% (Non-Condensing) | ||
| Storage temperature | - 40°C to 85°C | ||
| Pin Number | Pin Name | Pin Type | Pin Description |
| 1 | GND | G | Ground connections |
| 2 | WL_BT_ANT | RF | Wi-Fi & BT antenna I/O port |
| 3 | GND | G | Ground connections |
| 4 | NC | - | Floating (Don’t connected to ground) |
| 5 | NC | - | Floating (Don’t connected to ground) |
| 6 | NC | - | Floating (Don’t connected to ground) |
| 7 | NC | - | Floating (Don’t connected to ground) |
| 8 | GND | - | Ground connections |
| 9 | VBAT | P | Main power voltage source input |
| 10 | NC | - | Floating (Don’t connected to ground) |
| 11 | NC | - | Floating (Don’t connected to ground) |
| 12 | CHIP_EN | I | Module enable signal |
| 13 | WAKE_GIPO0 | I/O | Wake up signal with auto negotiation |
| 14 | SDIO_DATA_2 | I/O | SDIO data line 2 |
| 15 | SDIO_DATA_3 | I/O | SDIO data line 3 |
| 16 | SDIO_DATA_CMD | I/O | SDIO command line |
| 17 | SDIO_DATA_CLK | I/O | SDIO clock line |
| 18 | SDIO_DATA_0 | I/O | SDIO data line 0 |
| 19 | SDIO_DATA_1 | I/O | SDIO data line 1 |
| 20 | GND | G | Ground connections |
| 21 | NC | - | Floating (Don’t connected to ground) |
| 22 | VDDIO | P | I/O Voltage supply input |
| 23 | NC | - | Floating (Don’t connected to ground) |
| 24 | NC | - | Floating (Don’t connected to ground) |
| 25 | PCM_OUT | O | PCM Data output |
| 26 | PCM_CLK | I/O | PCM clock |
| 27 | PCM_IN | I | PCM data input |
| 28 | PCM_SYNC | I/O | PCM sync signal |
| 29 | NC | - | Floating (Don’t connected to ground) |
| 30 | NC | - | Floating (Don’t connected to ground) |
| 31 | GND | G | Ground connections |
| 32 | NC | - | Floating (Don’t connected to ground) |
| 33 | GND | G | Ground connections |
| 34 | WAKE_GIPO1 | I/O | Wake up signal with auto negotiation |
| 35 | NC | - | Floating (Don’t connected to ground) |
| 36 | GND | G | Ground connections |
| 37 | NC | - | Floating (Don’t connected to ground) |
| 38 | NC | - | Floating (Don’t connected to ground) |
| 39 | NC | - | Floating (Don’t connected to ground) |
| 40 | NC | - | Floating (Don’t connected to ground) |
| 41 | UART_RTS_N | I/O | UART DCE request send signal |
| 42 | UART_TXD | I/O | UART TX signal |
| 43 | UART_RXD | I/O | UART RX signal |
| 44 | UART_CTS_N | I/O | UART DEC clear send signal |
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