Eval¶

Funk¶

Ordered RFM69CW-868S2 x8; je 3.70Euro

Obsolete
Obsolete

Link
Manual

2x7 pins, 2mm pitch, 13,6mm horizontal pitch

Packet mode is already recommended.
With AES there are still max 64 Bytes for transfer. (Not enough for CAN-FD)

868MHz

MCU¶

STM32F373C8T6; 4,75€
Cortex-M4 etwas overkill; 64 KB, LQFP-48
Gibt gerade nichts anderes.

STM32G441KBT6; 5,45€
Cortex-M4F etwas overkill; 128 KB, LQFP-32

STM32F072C8T6; 4,38€
Cortex-M0; 64KB, LQFP-48

STM32F042C6T6; would be perfect; 2.5984€ bei 25 Stk; schoen waers

Small as possible with CAN. STM32F042 not available.
What did i get from farnell? STM32F103? STM32L433CCU6; ARM Cortex-M4, 80MHz, 256KB

• SPI 4
• 5xGPIO Signals
• CAN 2
• 2xLED RX/TX
• 2xLED HB/User
• UART 2
• SWD 3
  ---------
  20

STM32F103C6U6A, would be ok, just to get rid of them
32kByte Flash; 10kByte RAM; 72Mhz; VFQFPN-48
Quite big.

Antenna¶

• 868M-ANT410
• RF2-19A-T-00-50-G

Messungen¶

Nucleo:

• Receive: 60-85mA
• Send: 171