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Introduction
CEPARK MCP2515 CAN controller module using MCP2515, while using high-speed CAN transceiver TJA1050 . Onboard independent keys ,
Microchip 's MCP2515 is a stand-alone controller area network (Controller Area Network, CAN) protocol controller , fully supports CAN V2.0B specifications. The device can send and receive standard and extended data and remote frames . MCP2515 comes with two acceptance masks and six acceptance filters can filter out unwanted messages , thus reducing the main microcontroller (MCU) overhead. MCP2515 with MCU is connected via an industry standard Serial Peripheral Interface (Searial Peripheral Interface, SPI) to achieve.
Product parameters
SupportCAN2.0BAgreement
Use high-speedCANTransceiversTJA1050
Module size : 45mm * 33mm
SPIInterface control , to meet aSPIMultiple host interface extensionCANRequires the bus interface
8MHZCrystal , a typical application
Add a 120 ohm terminating resistor . For impedance matching ; ensure driving ability ; prevent signal reflection when the long-distance transmission lines.
receive standard frame , such as the use of serial data communications software can be observed
Onboard separate buttons , LED lights, power indicator .
Onboard power leads to the foot
MCP2515 features
Fully supports CAN V2.0B technical specifications, the communication speed is 1Mb / s:
- Length of the data field 0-8 bytes
- Standard and extended data frames and remote frames
Receive Buffer , acceptance and acceptance filter mask register register:
- Two receive buffers with prioritized message storage
- Six 29 acceptance filters
- Two 29 -bit masks
head and two data bytes filtering ( for standard data frames )
Three transmit buffers with prioritization and abort function
High-speed SPI interface (10 MHz):
- Support the SPI mode 0,0 and 1,1
One-shot mode ensures that packets are sent to try only once
with programmable prescaler clock output pin :
- Can be used as a clock source for other devices
You can start frame signal (Start-of-Frame, SOF), for monitoring the SOF signal:
- Can be used in slot protocol and / or bus diagnostics to detect early
Line performance degradation
Enable interrupt settings with selectable output pin
" buffer full " output pin can be configured as :
- Each receive buffer interrupt pin
- General purpose digital output pin
" Request to Send (Request-to-Send, RTS)" each input pin can be configured as :
- Each transmit buffer control pin is used to send messages immediately request
- General purpose digital input pin
Low-power CMOS technology :
- Operating voltage range of 2.7V to 5.5V
- 5mA typical operating current
- 1A typical standby current ( sleep mode )
Operating temperature range :
- Industrial (I): -40 C to +85 C
- Extended (E): -40 C to +125 C
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