AT833
Hardware implementation:
The following circuit shows an example implementation for the Ebyte E73-2G4M08S1C / E73-2G4M08S1CX Module. Each pin and its functionality is described in the table below.
Please do not change the components and values. Ensure a stable +3.3 V supply with a minimum current delivery of 20 mA.
Please ensure that the capacitors are connected as close as possible to the controller and ensure a good grounding path. For the detailed PCB layout, follow the advice from the datasheet. This is important for proper radio function.
| Pin | Description | Mandatory | Function | Use | Wiring |
| – | XTAL1 | Yes | 32.768 kHz crystal | – | – |
| – | XTAL2 | Yes | 32.768 kHz crystal | – | – |
| P0.03 | FIXTURE_IS_ON | Yes | Whenever this pin is high, the Vision Controller is in On State. If this pin is low, the Vision Controller goes to sleep. If the fixture is in normal operation (Power On), it should set this pin to high. If the fixture is turned off, sleeping, or in a wake-up state, this pin should be low. When the fixture wakes up due to MAIN_WAKEUP from the Vision Controller, make sure this pin is still low. | High: Vision Controller normal operation Low: Vision Controller sleep mode | Pull Down (100K) |
| P0.31/AI7 | MAIN_WAKEUP | No | This pin is used to signal that the Vision Controller wants to communicate with the fixture. It is also used to wake up the main controller for communication. This pin is pulled high as long as the Vision Controller wants to communicate with the fixture. | This pin is pulled high if communication is needed. In normal operation, this pin is always high. | |
| RESET | RESET | Yes | Programming SWD | – | – |
| SWCLK | SWCLK | Yes | Programming SWD | – | – |
| SWDIO | SWDIO | Yes | Programming SWD | – | – |
| P0.07 | SPI_MISO | Yes | SPI Communication Master Input Slave Output | – | – |
| P1.09 | SPI_MOSI | Yes | SPI Communication Master Output Slave Input | – | – |
| P0.13 | SPI_CLK | Yes | SPI Communication Clock | – | – |
| P0.24 | SPI_CS | Yes | SPI Communication Chip Select | – | – |
| P1.00 | IRQ | Yes | SPI Communication Interrupt Signal | – | – |
| – | NFC1 | No | NFC Antenna | – | – |
| – | NFC2 | No | NFC Antenna | – | – |
| P0.06 | I2C_SCL | No | I2C Clock | – | Pull Up (10K) |
| P0.26 | I2C_SDA | No | I2C Data | – | Pull Up (10K) |
| P1.10 | IR_VCC | No | Switchable VCC for IR sensor | Used to reduce current consumption | – |
| P1.11 | IR_INPUT | No | Output of IR sensor | – | – |
| P0.02 | LED | No | Signal State | – | – |
The following components should be used:
- Ebyte E73-2G4M08S1C / Ebyte E73-2G4M08S1CX
- Crystal „EPSON FC-135 32.7680KA-AC0“ or „SF32WK32768D91T004“
Here you can download the schematic as PDF.
