Huicheng HC-12 SI4463 wireless single-chip

Operating Frequency Range: 433.4—473.0MHz Transmit Power Max: 20dBm Power Supply Voltage: DC 3.2V ~5.5V Long Communication Dist
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Product Details

Product Applications

• Wireless sensor
• Community building security
• Robot wireless control
• Industrial remote control and telemetry
• Automatic data acquisition
• Container information management
• POS system
• Wireless acquisition of gas meter data
• Vehicle keyless entry system
• PC wireless networking

Product Features
  • Long-distance wireless transmission (FU3: 1000m in open space, baud rate
    5000bps in the air. FU4: 1800m in open space, baud rate 500bps in the air)
    • Working frequency range (433.4-473.0MHz, with 100 communication channels)
    • Maximum 100mW (20dBm) transmitting power (8 levels of power can be set)
    • Four working modes, adapted to different application situations
    • Built-in MCU performs communication with external device through serial
    port, no programming or configuration required for basic use
    • The number of bytes transmitted continuously is unlimited (FU1 and FU3
    modes only)
    • Update software version through the serial port
    Product Introduction
    The HC-12 wireless serial port communication module is a new generation of
    multi-channel embedded wireless data transmission module. Its wireless working
    frequency band is 433.4-473.0MHz. Multiple channels can be set, with a channel
    stepping of 400kHz and a total of 100 channels. The maximum transmitting power
    of the module is 100mW (20dBm), the receiving sensitivity is -117dBm at a baud
    rate of 5000bps in the air. Communication distance is 1000m (FU3 mode at 4800bps
    serial speed) in open space, 1800m in FU4 mode at reduced baud rate and volume
    of data.
    The module uses stamp hole packaging to allow for patch soldering, with
    dimensions of 27.8mm ×14.4mm ×4mm (including antenna cap, excluding spring
    antenna), making it is very convenient for incorporate into user specific
    applications. There is a PCB antenna socket ANT1 on the module, so an external
    433MHz frequency band antenna can be attached via a coaxial cable; there is also
    an antenna solder eyelet ANT2 on the module, convenient to solder a spring
    antenna to. Select one of these antenna options according to usage requirements.
    The module has an onboard MCU, eliminating the need for user to program the
    radio section separately, with transparent half-duplex serial transmission
    provided for receiving and sending serial port data. This making the HC-12 very
    easy to interface with. The module adopts multiple serial port transparent
    transmission modes that are user selected by AT commands according to usage
    requirements. The average working current of the four modes FU1, FU2, FU3, and
    FU4 in idle state are: 3.6mA, 80uA, 16mA, and 16mA respectively, while the
    maximum working current in any mode is 100mA (in the transmitting state).

  • Product Configuration

    Standard configuration of the HC-12 module only contains one 433MHz-frequencyband wireless communication module with IPEX20279-001E-03 standard RF socket.
    Optional accessories are 433MHz frequency band spring antenna, or IPEX-to-BNC
    coaxial cable and matching 433MHz frequency band omni-directional rubber antenna
    with BNC connector base. The user can purchase these according to their
    application requirements.

    Technical Details

    The HC-12 module uses a Silicon Labs Si4463 to provide the RF communications
    link. This is a high performance, low current, single-chip “EZRadioPRO” family
    transceiver with up to 20dBm (100mW) transmitting output power. The Si4463
    communicates through an SPI bus with an STMicroelectronics STM8S003F3 8-bit MCU
    that runs the HC-12 firmware. The STM8S provides a transparent serial data
    interface for interfacing to the module, allowing two HC-12 modules to act like
    a wired TTL level serial cable without any attached hardware devices needing to
    be aware of the RF link. Serial port and transceiver configurations are held in
    onboard non-volatile flash memory

    Definition of Pins

    The HC-12 module can be patch soldered, or have a 2.54mm-spacing pin header
    attached and directly inserted onto the user’s PCB. The module has nine pins in
    total, and one RF antenna socket (ANT1), with definitions as shown in the table
    Pin Definition I/O direction Notes
    1. Vcc
    Power supply input, DC3.2V-5.5V, with load
    capacity not less than 200mA. Note: if the
    module is working in the transmitting state
    for an extended time, it is suggested that a
    1N4007 diode be connected in series if the
    supply voltage is greater than 4.5V, so as to
    avoid overheating the onboard LDO regulator
    2. GND Common ground
    3. RxD Input
    (weak pullup)
    UART data input, TTL level. 1k resistor
    connected in series inside the module
    4. TxD Output UART data output, TTL level. 1k resistor
    connected in series inside the module
    5 SET Input
    (10k pullup)
    Parameter setting control pin, active low
    level. 1k resistor connected in series inside
    the module
    6. ANT Input/Output 433MHz antenna pin
    7. GND Common ground
    8. GND Common ground
    9. NC No connection, used in mechanical fixing,
    compatible with HC-11 module pin position
    ANT1 ANT Input/Output IPEX20279-001E-03 antenna socket
    ANT2 ANT Input/Output 433MHz spring antenna solder eyelet
    Pins 1-6 each have two bonding pads, with the outer half-hole bonding pads
    intended for patch soldering. When the inner bonding pad ANT2 of Pin 6 is used
    for connection, the spring antenna can be soldered here by hand. The inner
    round-hole bonding pads of Pins 1-5 may then be used to solder a 2.54mm-spacing
    pin header that can be plugged into a PCB socket.

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