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BLE-SER

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No.

Status

Description

once quickly flashes 3 times after powered on

currently in slave mode

twice quickly flashes 3 times after powered on

currently in master-slave mode

slowly flashes at 500ms intervals

currently in broadcast status

keeps on

currently in connection status

quickly flashes in connection status

currently performing data transmission

quickly flashes in pairing process

has been paired with other devices, need

power-up again to complete pairing

For details, please refer to CH9140 datasheet.

7. Schematic diagram for reference

3V3

GND

LED0

3V3

RXD_CONNECT_MCU_TXD

TXD_CONNECT_MCU_RXD

GND

Select 3 for master-slave mode

Select 1 for slave mode

BLE_MODE

VCC

GND

RELOAD/LED

RXD

TXD

CTS

RTS#

BLE-SER-A

Содержание BLE-SER

Страница 1: ...ide virtual serial driver can directly call Bluetooth interface through the serial port which is compatible with serial debug applications so it can communicate with UART with no secondary development required easily implementing the exemption of wire plugging and not being limited by cable distance BLE SER appearance Some application block diagrams of CH9140 Figure 1 Block diagram of serial commu...

Страница 2: ...y hardware Transmission distance 100 meters Adjustable 8 positions of TX power Power off sleep current is 0 3uA Supports 3 3V and 2 5V operating voltages Asynchronous serial port default baud rate is 115200bps Serial port supports MODEM signals RTS and CTS Serial port supports odd even no parity space 0 and mark 1 Supports obtain the chip supply voltage parameters 3 Package size and pins of BLE SE...

Страница 3: ... data transmission rate The module can run separately without extra ground plane but when it is installed on the other PCB it should be noted Antenna area must be far away from other metal components and the distance must be greater than 20mm Any conductor close to the antenna may seriously affect the antenna radiation pattern The figure below shows the reference layout of the module The first thr...

Страница 4: ...ss again The difference is that the indicator LED in step 3 will flash quickly In this case the pairing can be re established by powering up the chip or module 6 2 Serial transparent transmission function A UART is used for serial transparent transmission The default setting is 115200bit s baud rate 8 data bits 1 stop bit no parity and enabled flow control The UART receive and transmit buffers of ...

Страница 5: ...nection status 5 quickly flashes in connection status currently performing data transmission 6 quickly flashes in pairing process has been paired with other devices need power up again to complete pairing For details please refer to CH9140 datasheet 7 Schematic diagram for reference 3V3 GND 1K R2 D1 LED0 3V3 RXD_CONNECT_MCU_TXD TXD_CONNECT_MCU_RXD GND 2 3 1 S1 Select 3 for master slave mode Select...

Страница 6: ...m up Minimum temperature Tsmin 150 Maximum temperature Tsmax 200 Time minimum maximum ts 60 180s Tsmax TLslope rise rate Maximum 3 s During hold Temperature TL 217 Time tL 60 150s Peak temperature Tp 260 0 5 Time when actual peak temperature is within 5 tp 20 40s Slope descent rate Maximum 6 s Time from 25 to peak temperature Maximum 8 min ...

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