Tokmas MCP2515-I

A standalone CAN protocol controller with full support for the CAN V2.0B specification. The device is capable of transmitting and receiving standard and extended data frames, as well as remote frames. Two acceptance mask registers and six acceptance filter registers are included to filter out unwanted messages, thereby reducing overhead on the host MCU. Connectivity to the MCU is achieved via the industry-standard SPI.

• Full support for CAN V2.0B specification, communication rate up to 1 Mb/s
  • Data field length: 0–8 bytes
  • Standard and extended data frames and remote frames
• Receive buffers, acceptance mask registers, and acceptance filter registers
  • Two receive buffers with prioritized message storage
  • Six 29-bit acceptance filter registers
  • Two 29-bit acceptance mask registers
• Filtering on first two data bytes (standard data frames)
• Three transmit buffers with priority setting and transmission abort
• High-speed SPI interface (10 MHz)
  • Supports SPI modes 0,0 and 1,1
• One-shot mode ensures single message transmission attempt
• Clock output pin with programmable prescaler
  • Usable as clock source for other devices
• Start-of-Frame (SOF) signal available for SOF monitoring
  • Applicable to time-slot protocols and/or bus diagnostics for early detection of bus performance degradation
• Interrupt output pin with selectable enable
• "Buffer Full" output pin configurable as
  • Interrupt pin for each receive buffer
  • General-purpose digital output pin
• "Request-to-Send (RTS)" input pins individually configurable as
  • Control pin for each transmit buffer to request immediate message transmission
  • General-purpose digital input pin
• Low-power CMOS technology
  • Operating voltage range: 2.7V to 5.5V
  • Typical operating current: 5 mA
  • Typical standby current: 1 μA (sleep mode)
• Operating temperature range: -40°C to +85°C