WIM1481 The compact-sized BLE 5.0 module, designed for intelligent wireless controls, enables ultra-low power connectivity and provides considerable design flexibility to the engineers.
WIM1481 Table of Contents 1. Features ................................................................................................................................................................. 3 2. Block Diagram..................................................................................................................................................... 3 3. Specifications ......................................................................................................................
WIM1481 1. Features • BLE 5.0 based non-flooding intelligent mesh • PWM/AIO/SPI/I2C/UART/IO interface options • TX output power up to +10dBm • -96dBm RX sensitivity • 14 programmable GPIOs • 6 PWM channels • External antenna • Compact form factor • Zero downtime Over-the-Air (OTA) firmware updates • FCC, CE, ISED certified • RoHS2.0 compliant • Max power:1±1 2.
WIM1481 3. Specifications Electrical specifications Parameter Symbol Min. Input voltage VDD 1.8 Typ. IO supply voltage Max. Unit 3.6 V VDD Remark V RF specifications Parameter Min. Typ. Max. Unit Operating frequency 2402 - 2480 MHz Maximum output power - 10 - dBm Receiver sensitivity - -96 - dBm ADC specifications Parameter Min. Typ. Max. Unit Remark ADC input voltage 0 - 1.2 V @3.3V input PWM specifications Parameter Symbol PWM frequency Min. Typ. Max.
WIM1481 Environmental specifications Parameter Symbol Min. Max. Unit Operating temperature Topr -40 85 °C Storage temperature Tstr -65 150 °C Mechanical specifications Parameter Typ. Dimension Dimension Max. Unit Remarks 22.5 x 8.0 x 2.95 mm For chip antenna 16.60 x 8.0 x 2.41 mm For external antenna Certifications Certifications Details CE FCC ISED RoHS 2.
WIM1481 4. Module Dimensions External antenna version (WIM1481E) • Dimensions: 16.60 x 8.0 x 2.41 mm (with external antenna) • Pitch: 1.33 mm • Module pad dimensions: 0.737 x 0.698 mm Chip antenna version (WIM1481C) • Dimensions: 22.50 x 8.0 x 2.95 mm (with chip antenna) • Pitch: 1.33 mm • Module pad dimensions: 0.737 x 0.
WIM1481 5.
WIM1481 6. Design Recommendations a) Keep out enough area for the chip antenna. b) Avoid any routing under antenna area as shown in the below image. c) Better to place the module away from High frequency circuitry like other RF, and large components or metallic objects. d) All GND pins must be well grounded. e) The area around the module should be free of any ground planes, power planes, trace routings or metal for 6 mm from the module antenna position in all directions.
WIM1481 7. Antenna External wire antenna – 37mm 37mm wire antenna Antenna Properties Frequency range 2.4GHz-2.5GHz Impedance 50Ω Nominal VSWR 1.92:1 Max Return loss -10dB Max Gain (Peak) 2dBi Cable loss 0.3dBi Max External wire antenna – 150mm 150mm wire antenna Antenna Properties Frequency range 2.4 GHz-2.5GHz Impedance 50 Ω Nominal VSWR 1.92:1 Max Return loss -10 dB Max Gain(peak) 1.5 dBi Cable loss 0.
WIM1481 External wire antenna – 600mm 600mm wire antenna Antenna Properties Frequency range 2.4GHz-2.5GHz Impedance 50Ω Nominal VSWR ≤ 1.3 Gain (Peak) 3dBi Stick antenna Stick antenna Antenna Properties Frequency range 2.4GHz-2.5GHz Impedance 50Ω Nominal VSWR 1.92:1 Max Return loss -10dB Max Gain (Peak) 2dBi Cable loss 0.
WIM1481 Chip antenna Chip antenna Antenna Properties Frequency range 2.4 GHz-2.5 GHz Impedance 50 Ω Peak Gain 1.
WIM1481 8.
WIM1481 PIN NO PIN NAME SUPPORTING FUNCTIONS COMMENTS 1 GND GROUND Ground 2 RST RESET Reset 3 NC NC NC 4 SWS Single wire slave Serial wire debug IO for debug and programming 5 GP1 IO/PWM/I2C/SPI/UART PWM or Digital IO or Serial interface 6 GP2 IO/PWM/I2C/SPI/UART PWM or Digital IO or Serial interface 7 NC NC NC 8 GP3 IO AIO or Digital IO 9 GP4 IO/PWM/I2C/SPI/UART PWM or Digital IO or Serial interface 10 GP5 IO/PWM/I2C/SPI/UART/AIO AIO or Digital IO or PWM or Seria
WIM1481 9. Soldering Information Leadfree reflow soldering Do not exceed peak temperature (Tp) of 242°C. Time at maximum temperature is 27 seconds. After reflow soldering, optical inspection of the module is recommended to verify proper alignment. Hand soldering is also possible. Cleaning In general, cleaning the populated modules is strongly discouraged. Residuals under the module cannot be easily removed with any cleaning process. 1.
WIM1481 10.
WIM1481 Reel Information A full reel can hold 1000 modules and weighs approximately 1100 gm (including the modules). The module antennas are packed separately and supplied along with the modules. Please note: 1. Tape material: Conductive Polystyrene; Black; 0.4mm thickness 2. All tape and sprocket hole dimensioning are as per EIA-481 unless otherwise stated 3.
WIM1481 11. Ordering Information Product code Communication Voltage Rating Analog Channel I/O PWM I/O Serial Interface Antenna Dimensions (mm) WIM1481C BLE 5.0 3.0V DC 4 AIO 6Channels UART/SPI/12C Chip 22.50 x 8.0 x 2.95 WIM1481E BLE 5.0 3.0V DC 4 AIO 6Channels UART/SPI/12C External 16.60 x 8.0 x 2.41 12. Precautions • While integrating module, make sure all the pads are soldered properly. • Please use a voltage regulator if the power supply is above the max ratings.
FCC Statement This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) thi s device may not cause harmful interference, and (2) this device must accept any interference received, incl uding interference that may cause undesired operation. Changes or modifications not expressly approved by the party responsible for compliance could void the user’ s authority to operate the equipment.
ISED Statement English: This device complies with Industry Canada license‐ exempt RSS standard(s). Operation is subject to the following two conditions: (1) This device may not cause interference, a nd (2) This device must accept any interference, including interference that may cause undesired operation of the device. The digital apparatus complies with Canadian CAN ICES‐ 3 (B)/NMB‐ 3(B). ‐ French: Le présentappareilestconforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence.
WIM1481 Version 1.
