MOTG-CANBUS
Description
Controller Area Network (CAN Bus) is a multi-master communication network for various industrial and automotive applications. Unfortunately, the microcontroller does not have an onboard CAN Bus controller and transceiver.
MOTG-CAN provides a high-speed and low-cost solution for incorporating a CAN bus controller and transceiver into your design.
Features
- Supports CAN V2.0B at 1 Mb/s operation
- Supports both 3.3V and 5V power supply
- Maximum of 112 nodes connected
- MCP2515 CAN Controller
- ISO-11898 standard physical layer
- High-speed SPI Interface (10 MHz)
- MCP2551 High-Speed CAN Transceiver
- ISO-11898 standard physical layer
- High-voltage transient protection
- Short circuit protection
Chipset Features
MOTG-CAN carries the MCP2515 CAN controller and MCP2551 CAN Transceiver. The datasheets are available from https://www.microchip.com. Please refer to these datasheets for specific information.
Pins and Solder Bridges
Pin Description
| Pin | Symbol | Description |
|---|---|---|
| 1 | N/C | Not Connected |
| 2 | GND | Supply Ground |
| 3 | N/C | Not Connected |
| 4 | N/C | Not Connected |
| 5 | GPIO5 | Interrupt Pin (INT) |
| 6 | GPIO4 | Chip Select (CS) |
| 7 | N/C | Not Connected |
| 8 | N/C | Not Connected |
| 9 | N/C | Not Connected |
| 10 | N/C | Not Connected |
| 11 | N/C | Not Connected |
| 12 | SCK | Clock input for SPI interface |
| 13 | MISO | Data output for SPI interface |
| 14 | MOSI | Data input for SPI interface |
| 15 | GND | Supply Ground |
| 16 | N/C | Not Connected |
Solder Bridge Description
The MOTG-CAN has one solder bridge. The functionality of those solder bridges is described in the table below. These are soldered by the User.
| Solder Bridge | Description |
|---|---|
| SB1 | Use terminating resistor |
Note
Solder Bridge 1 (SB1) provides the option for using the terminating resistor (120-ohms) in the module.
Limitations with DIABLO-16
Due to limitations with GPIO pins PA12 and PA13 on DIABLO modules, these pins are used for I2C by the DIABLO modules themselves. This makes PA12 and PA13 not available to the SPI bus on MOTG, meaning all SPI MOTG modules are not compatible with DIABLO-16 based modules which feature external touch controllers. This includes this MOTG-CAN MOTG
This includes all DIABLO modules with Capacitive Touch (CTP) - All sizes, and Resistive Touch modules on 4.3" and above.
SPI MOTG modules are however compatible with Resistive Touch modules 2.4" to 3.5" as these do not feature an external RTP controller.
Applies to gen4 2.4" to 3.5" with board revisions 1.2 and lower, and gen4 4.3" to 7.0" with board revisions 1.5 and lower.
Mechanical Views
Schematic Details
Specifications
Recommended Operating Conditions
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Supply Voltage (VCC) | Relative to VSS | 4.5 | 5.0 | 5.5 | V |
| Operating Temperature | -20.0 | -- | 70.0 | °C | |
| Storage Temperature | -65.0 | -- | 150.0 | °C |
Global Characteristics Based on Operating Conditions
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Operating Current | Typical – Please refer to Chip Datasheets | -- | 85 | -- | mA |
| Standby Current | Typical – Please refer to Chip Datasheets | -- | 13 | -- | mA |
Note
Please refer to the Datasheets of the MCP2515 and MCP2551 for more specific information.
Revision History
Hardware Revision
| Revision Number | Date | Description |
|---|---|---|
| 1.1 | 30/03/2020 | Initial Public Release version |
Datasheet Revision
| Revision Number | Date | Description |
|---|---|---|
| 1.8 | 06/01/2023 | Modified datasheet for web-based documentation |