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WB30D-1711DCMV1 Devrlopment board

1 Product Introduction

The WB30D - 1711DCMV1 Development Board features a rich set of functions and outstanding performance, making it suitable for various Internet of Things (IoT) applications. The module integrates a high-performance MCU, dual-band Wi-Fi, and Bluetooth functionality to meet the communication needs of different devices. Its internal structure is well-designed, providing stable power supply to each module through embedded regulators, and it includes multiple power management modes to reduce power consumption. With its rich interface resources, it can easily connect and communicate with external devices such as sensors and displays. In terms of RF performance, both Wi-Fi and Bluetooth offer reliable wireless connections, ensuring stable and efficient data transmission. The module has broad application prospects in fields such as smart homes, industrial IoT, and wearable devices, providing strong wireless communication and data processing capabilities for various smart devices, enabling intelligent control and data interaction.

2 Features and Specifications

  • Dual-Band Wi-Fi and Bluetooth Support: Supports WLAN dual-band (2.4GHz and 5GHz) and Bluetooth 5.0 Low Energy (BLE). The module integrates the Real-M300 high-performance MCU, WLAN MAC, baseband, RF, and Bluetooth functionalities, enabling complete Wi-Fi and BLE 5.0 protocol support.

  • Multiple Operating Modes and Power-Saving Mechanisms: Operating voltage range of 3.0V to 3.6V, supporting various low-power modes such as sleep mode and deep sleep mode. In different modes, each functional module can flexibly configure power and clocks to reduce power consumption. For example, in sleep mode, most functional modules can be power-gated or clock-gated; in deep sleep mode, all functions are shut down except for AON (Always-On) functionality, achieving ultra-low power consumption.

  • Rich Interface Resources: Provides configurable GPIO pins for controlling peripheral devices. It also integrates internal memory to support simple application development. The module offers multiple communication interfaces, such as UART, SPI, QSPI/OSPI, I2C, and high-speed connection interfaces like SDIO and USB, as well as audio functions (including digital microphone interface and I2S).

  • High-Performance Processors: The module includes a low-power KM4 MCU (based on the Armv8.1-M architecture, compatible with the Cortex-M55 instruction set), with a maximum clock speed of 345MHz. The KM4 processor offers enhanced debugging features, floating-point computation, digital signal processing (DSP) extension instructions, etc. Additionally, it includes a low-power KM0 MCU (based on the Armv8-M baseline architecture, compatible with the Cortex-M23 instruction set), with a maximum clock speed of 115MHz. The KM0 processor features a simplified instruction set and smaller code size, compatible with KM4 processor code and tools, making it ideal for power-sensitive, fast-response tasks such as power management and network protocol handling.

  • Reliable RF Performance:

  • Wi-Fi RF Features: In the 2.4GHz frequency band, the module follows the IEEE 802.11b/g/n standards, supporting multiple modulation schemes and data rates, with good transmission power and reception sensitivity. In the 5GHz band, it follows the IEEE 802.11a/n standards, providing excellent transmission and reception performance. The antenna supports diversity functions, allowing the external RF switch to select the best antenna to reduce channel fading effects. The module also features real-time calibration to ensure stable operation of the radio system.
  • Bluetooth RF Features: Compliant with Bluetooth 5.0 specifications, operating in the 2.4GHz frequency band. The module offers good transmission power and reception sensitivity, supporting various Bluetooth functions such as fast AGC control, multiple power levels, enhanced power control, and low-power modes (such as BLE).

PCB Top and Bottom Views

PCB-EV721D00-2v0_Top.png Top View of PCB

PCB-EV721D00-2v0_Bottom.png Bottom View of PCB

3 Dimensions

Length: 65mm; Width: 30mm

4 Pin Definitions

The abbreviations for pin types are as follows:

  • I/O: Input/Output pin
  • I: Input-only pin
  • A: Analog signal pin
  • RST: Reset pin
  • P: Power pin
  • G: Ground pin
Pin Number RTL8711DCM-VA2/VA3 Pin Name Pin Type Default Function and Description
1 VAH_LDOM P Power input to LDOM.
2 LDOM_OUT P Power input to LDOM.
PA8 I/O GPIO The default function is general input/output and can be configured for other functions.
3 PA12 I/O GPIO The default function is general input/output and can be configured for other functions.
4 VDL_CORE P Power input for the digital core domain.The default function is general input/output and can be configured for other functions.
5 PA13 I/O GPIO The default function is general input/output and can be configured for other functions.
6 PA14 I/O GPIO The default function is general input/output and can be configured for other functions.
7 PA15 I/O GPIO The default function is general input/output and can be configured for other functions.
8 PA16 I/O GPIO The default function is general input/output and can be configured for other functions.
9 PA17 I/O GPIO The default function is general input/output and can be configured for other functions.
10 PA18 I/O GPIO Power input to the digital I/O power domain.The default function is general input/output and can be configured for other functions.
11 VDH_IO1 P
12 PA19 I/O GPIO The default function is general input/output and can be configured for other functions.
13 PA20 I/O GPIO The default function is general input/output and can be configured for other functions.
14 PA21 I/O GPIO Power input to the digital I/O power domain.The default function is general input/output and can be configured for other functions.
15 PA22 I/O GPIO The default function is general input/output and can be configured for other functions.
16 PA23 I/O GPIO
17 VDH_IO2 P
18 PA26 I/O GPIO The default function is general input/output and can be configured for other functions.
19 PA27 I/O GPIO The default function is general input/output and can be configured for other functions.
20 PA28 I/O GPIO The default function is general input/output and can be configured for other functions.
21 PA29 I/O GPIO The default function is general input/output and can be configured for other functions.
22 PA30 I/O SWD CLK The default function is SWD CLK, which can be configured to other functions after the IC starts up.
23 PA31 I/O SWD DATA The default function is SWD DATA, which can be configured to other functions after the IC starts up.
24 PBO I/O GPIO The default function is general input/output and can be configured for other functions.
25 PB1 I/O GPIO The default function is general input/output and can be configured for other functions.
26 PB2 I/O GPIO The default function is general input/output and can be configured for other functions.
27 PB3 I/O GPIO The default function is general input/output and can be configured for other functions.
28 VRH_PAD_A P Power input of the RF circuit.
29 VRH_PA_A P Power input of the RF circuit.
30 RFIO_A A Output of the radio transmitter and input of the receiver.
31 GND G Grounding.
32 GND G Grounding.
33 RFIO_G A Output of the radio transmitter and input of the receiver.
34 VRH_PA_G P Power input of the RF circuit.
35 VRM_RF P Power input of the RF circuit.
36 VRH_SYN P Power input of the RF circuit.
37 VRM_SYN P Power input of the RF circuit.
38 XI A 40MHz crystal clock reference input.
39 XO A 40MHz crystal clock reference output.
40 VAH_XTAL P Power input of the XTAL circuit.
41 VAM_AFE P Power input of the RF AFE circuit.
42 VAH_ADC P Power input of the ADC circuit.
43 BAT_MEAS A Battery voltage measurement pin.
44 PB4 I/O LOGUART Rx The default function is LOGUART Rx, which can be configured to other functions after the IC starts up. If configured as a GPIO function, the LOGUART function will be disabled.
45 PB5/UD_DIS I/O LOGUART Tx The default function is LOGUART Tx, which can be configured to other functions after the IC starts up. If configured as a GPIO function, the LOGUART function will be disabled.
46 PB6 I/O GPIO The default function is general input/output and can be configured for other functions.
47 PB7 I/O GPIO Power is supplied to the digital I/O power domain.
48 PB8 I/O GPIO Power is supplied to the digital I/O power domain.
49 PB9 I/O GPIO The default function is general input/output and can be configured for other functions.
50 PB10 I/O GPIO The default function is general input/output and can be configured for other functions.
51 VDH_IO3 P
52 PB13 I/O GPIO The default function is general input/output and can be configured for other functions.
53 PB14 I/O GPIO The default function is general input/output and can be configured for other functions.
54 PB15 I/O GPIO The default function is general input/output and can be configured for other functions.
55 PB16 I/O GPIO The default function is general input/output and can be configured for other functions.
56 PB17 I/O GPIO The default function is general input/output and can be configured for other functions.
57 PB18 I/O GPIO The default function is general input/output and can be configured for other functions.
58 PB19 I/O GPIO The default function is general input/output and can be configured for other functions.
59 PB20 I/O GPIO The default function is general input/output and can be configured for other functions.
60 PB21 I/O GPIO The default function is general input/output and can be configured for other functions.
61 PB22 I/O GPIO The default function is general input/output and can be configured for other functions.
62 PB30 I/O GPIO Wake-up pin. This pin should be pulled up during reset.The default function is general input/output and can be configured for other functions.
63 PB31/TM_DIS I/O GPIO Wake-up pin. The operating mode of the IC is determined by the level of the trap pin PB31/TM_DIS during the power-on process. 1: Normal mode 0: Test mode.The default function is general input/output and can be configured for other functions.
64 CHIP_EN RST Chip enable or disable selection pin. 1: Enable chip 0: Disable chip.
65 LDOC_OUT P LPower output of DOC and power input of digital core domain.
66 VAM_LDOC P Power input of LDOC.
67 LX P DCDC input
68 VAH_DCDC P Power input of DCDC.
69 GND G