ATmega64M1-Development-Board (Arduino-Compatible)

This projects brings an Arduino-compatible development board for the Atmel ATmega64M1 microcontroller. The ATmega64M1 is an 8-bit AVR RISC-based microcontroller and with the CAN capabilities widely used in the automotive industry.

The microcontroller has some additional features to the widely-used Arduino UNO:

• CAN interface
• DAC
• internal temperature sensor

With the help of ATmegaxxM1-C1 Arduino Core of thomasonw (https://github.com/thomasonw/ATmegaxxM1-C1) it is possible to work with the Arduino environment on this board. But you are also able to program the board directly via an ICSP and a dedicated programmer.

Notes

CAN Interface

The CAN interface can be handled by two CAN transceivers. You can choose between an isolated (ADM3053) and a non-isolated (MCP2562) CAN transceiver. If you are using the ADM3053, you have to equip the board with R6 and C12 to C15. C5 to C8 are mandatory for both configurations.

Power Supply

You power the board via three different ways: USB, VIN (DC-Jack or pin header) or CAN interface (3: GND and 9: VCC). You can configure the power supply via the jumper JP2 and JP3 next to the DC-Jack. If you are using the CAN interface as power provision, you have to close the solder jumper SJ4 next to the CAN interface. Caution: If you are closing this jumper the grounds of the board and CAN interface are no more isolated to each other!

Logic Level

You can run the controller with 5V or 3.3V. You can configure this via the jumper JP4 next to the DC-Jack.

Bill of Materials (Thanks to @elasticdotventures)

Per Unit in non-isolated can bus (MCP2562 config)

Chips:

• 1x ATMEGA64M1 IC11
• 1x FT232RL IC4
• 1x MCP2562 U1

Capacitors:

• 6x smd 1206 / 3216 polar 10uf tantulum c1,c2,c3,c4,c5,c7
• 6x smd 0805 / 2012 non-polar 100nf c6,c8,c16,c17,c18,c19
• 2x smd 0805 / 2012 non-polar 22pf c9,c11

Oscillators:

• 16mhz Q1

Voltage Regulator:

• AMS1117 LM1117IMPX-3.3 15Vin 3.3Vout 800ma SOT223 IC1
• AMS1117 LM1117IMPX-5.0 15Vin 3.3Vout 800ma SOT223 IC2

0805 / 2012 Resistors:

• 6x 1k r1,r2,r4,r5, r8,r9
• 1x 10k resistor R3
• 1x 120ohm resistor r7

0805 Leds:

• 6x color your choice

Misc:

• 1x X1 micro USB
• 1x ISCP connector 3x2 pin header SV1
• 1x DC Jack - DCJ0202 J1
• 1x sw1 (reset)
• 6x surface jumpers sj1,sj2,sj3,sj4,sj5
• 1x smd fuse 1206 f1

Optional isolated can bus ADM3053

2x smd 1206 / 3216 polar 10uf C12,c15 2x smd 0805 / 2012 non-polar 100uf c13,14
1x 47k 0805 resistor r6

Improved CAN terminator (replaces r7 120ohm) - coming soon!

2 x 60ohm r7a r7b 1 x 4.7nf capacitor