Bluetooth low energy TI CC2541 module

Bluetooth low energy TI CC2541 module

Bluetooth low energy module

Chip set:  TI CC2541

Dimension: 15.2*25.3*2.0 mm


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  • Description
  • Inquiry

WJ-M104 Bluetooth low energy UART protocol module is a single mode device targeted for low power sensors and accessories.
WJ-M104 offers all Bluetooth low energy features: radio, stack, profiles and application space for customer applications. The module also provides flexible hardware interfaces to connect sensors.
WJ-M104 can be powered directly with a standard 3V coin cell batteries or pair of AAA batteries in lowest power shutdown mode it consumes only 0.5 uA and will wake up in few microseconds.
WJ-M104 transmission distance of 50 meter. (At face to face, free space, 1.2 Meter high from Ground for testing).
Bluetooth IC:TTC2541 6*6*0.9mm 40pin IC / use TI CC2541 IC dice

Heart rate sensors
Blood pressure and glucose meters
Weight scales
Key fobs
Households sensors and collector devices
Security tags
Wireless keys (keyless go)
Proximity sensors
Indoor GPS broadcasting devices

Bluetooth BLE v.4.0 single mode compliant
Supports master,slave nd master/slave modes
Integrated Bluetooth low energy stack
GAP, GATT, L2CAP, SMP Bluetooth low energy profiles
Compliance: BQB BLE4.0, FCC, IC(Canada), CE ETSI RED…etc. worldwide RF Regulations.
CC2541/TTC2541Transmit power :+0dBm typical
CC2541/TTC2541 Receiver sensitivity: -94dBm typical
In-System-Programmable Flash 256KB SRAM 8KB
Low current consumption :Shutdown. No clocks running, no retention: 0.5uA(Typical)
WMD410004SR6A0 (HY-254104) Metal wire Antenna PCBA dimension size and picture
(PCBA dimension size : 15.2*25.3*2.0 mm)

3. WJ-M104 Metal wire Antenna PCBA dimension size and picture
(PCBA dimension size : 15.2*25.3*2.0 mm)


4.  Module pin definition and description of input and output ports

Pin Function

Pin No. Function
Function corresponds
1 REST BLE hardware reset pin (Low: reset)
2 RX UART Serial data bus input
3 TX UART Serial data bus output
4 WAKEUP BLE wake up pin: Low/ wake up,
High / BLE module automatically sleep
5 INT Interrupt output pin
6 GND BLE module grounding pin
7 VCC BLE module power supply pin,
voltage range of 2.0 ~ 3.6V

a. UART: serial bus, the default baud rate 115200bps, a single packet transmission
is less than 17 bytes, package transmission intervals greater than 20ms.
b. WAKEUP: BLE wake up pin, Low _wake up, High/ BLE module automatically sleep.
c. RESET: BLE hardware reset pin, Low level reset.
d. VCC: BLE module power supply pin voltage range DC 2.0~3.6V.
e. GND: BLE module ground pin.

5. Electrical Characteristics
(With Ta = 25 ℃, VDD = 3.0V, standard measure:1Mbps , 250KHz GFSK modulation ,
Bluetooth Low energy mode.)
1). Modulation Mode: GFSK;
2). Frequency range: 2402~2480MHZ (2.4G ISM band);
3).Transmit power setting Range: -20 ~ +0 dBm typical ( differential mode o/p point characteristics ;
programmable by software)
4). Operating ambient temperature range: -40 ℃ ~ + 125 ℃;
5). The storage temperature range: -40 ℃ ~ + 85 ℃;
6). The power supply voltage: 2.0 ~ 3.6VDC;
7). Receiver sensitivity: – 94dBm typical( direct test from IC RF out differential mode o/p point
8). Receiving mode current (high gain setting): 20.02 mA (typical);
9). Transmit mode current ( at 0dBm output setting ): 18.2 mA (typical);
10). MCU law active current (only 32MHz operation of X-tal OSC): 6.7 mA (typ);
11). Power mode 1: The current consumption: (under MCU standby mode,
the wake-up time = 4uS); I= 270uA (Typical
12). Power mode 2: THE current consumption in sleep mode.
timer activate / enable, wake-up time can by the programming software setting): I = 1uA (typ);
13). Power mode 3: The current consumption 🙁 Low power deep sleep mode,
via the hardware initiative wake
): I = 0.5uA(Typical);

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