ATMEGA32M1-MU Atmel, ATMEGA32M1-MU Datasheet - Page 178

• Manufacturer Part Number: ATMEGA32M1-MU
• Description: MPU AVR 32K FLASH 20MHZ 32-QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA32M1-MU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: CAN, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 11x10b; D/A 1x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-VFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of I /o: -

19.8.3
19.9
19.9.1
178
Interrupts
ATmega16M1/32M1/64M1
Error Setting
Interrupt organization
Figure 19-13. Error Detection Procedures in a Data Frame
The CAN channel can detect some errors on the CAN network.
After detecting an error, the CAN channel sends an error frame on network. If the CAN channel
detects an error frame on network, it sends its own error frame.
The different interrupts are:
The general interrupt enable is provided by ENIT bit and the specific interrupt enable for CAN
timer overrun is provided by ENORVT bit.
Rx
Tx
• AERR: Acknowledgment error (Tx only). No detection of the dominant bit in the acknowledge
• In transmission:
• In reception:
• Interrupt on receive completed OK
• Interrupt on transmit completed OK
• Interrupt on error (bit error, stuff error, CRC error, form error, acknowledge error)
• Interrupt on frame buffer full
• Interrupt on “Bus Off” setting
• Interrupt on overrun of CAN timer
slot
The error is set at MOb level
- The identified has matched:
- The identified has not or not yet matched:
The error is set at general level
The error is set at MOb level
– end-of-frame
– error delimiter
– overload delimiter
Form error
Form error
Stuff error
Stuff error
ACK error
CRC error
Bit error
Bit error
SOF
Identifier
Arbitration
RTR
Control
Message Data
CRC
CRC
del.
ACK
ACK
del.
8209D–AVR–11/10
EOF
inter.