AT91SAM7A3-AU Atmel, AT91SAM7A3-AU Datasheet - Page 509

• Manufacturer Part Number: AT91SAM7A3-AU
• Description: IC ARM7 MCU FLASH 256K 100LQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM7A3-AU

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 60MHz
• Connectivity: CAN, I²C, MMC, SPI, SSC, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 62
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 1.95 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-LQFP
• Controller Family/series: AT91SAM7xx
• No. Of I/o's: 62
• Ram Memory Size: 32KB
• Cpu Speed: 60MHz
• No. Of Timers: 3
• Rohs Compliant: Yes
• Package: 100LQFP
• Device Core: ARM7TDMI
• Family Name: 91S
• Maximum Speed: 60 MHz
• Operating Supply Voltage: 3.3 V
• Data Bus Width: 32 Bit
• Number Of Programmable I/os: 62
• Interface Type: CAN/SPI/I2S/TWI/USART/USB
• On-chip Adc: 2(8-chx10-bit)
• Number Of Timers: 3
• Processor Series: AT91SAMx
• Core: ARM7TDMI
• Data Ram Size: 32 KB
• Maximum Clock Frequency: 60 MHz
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: JTRACE-ARM-2M, MDK-ARM, RL-ARM, ULINK2
• Development Tools By Supplier: AT91SAM-ICE, AT91-ISP, AT91SAM7A3-EK
• Minimum Operating Temperature: - 40 C
• Cpu Family: 91S
• Device Core Size: 32b
• Frequency (max): 60MHz
• Total Internal Ram Size: 32KB
• # I/os (max): 62
• Number Of Timers - General Purpose: 3
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (max): 3.6V
• Operating Supply Voltage (min): 3V
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 100
• Package Type: LQFP
• For Use With: AT91SAM-ICE - EMULATOR FOR AT91 ARM7/ARM9AT91SAM7A3-EK - KIT EVAL FOR AT91SAM7A3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

36.7.2
6042E–ATARM–14-Dec-06
CAN Controller Interrupt Handling
There are two different types of interrupts. One type of interrupt is a message-object related
interrupt, the other is a system interrupt that handles errors or system-related interrupt
sources.
All interrupt sources can be masked by writing the corresponding field in the CAN_IDR regis-
ter. They can be unmasked by writing to the CAN_IER register. After a power-up reset, all
interrupt sources are disabled (masked). The current mask status can be checked by reading
the CAN_IMR register.
The CAN_SR register gives all interrupt source states.
The following events may initiate one of the two interrupts:
All interrupts are cleared by clearing the interrupt source except for the internal timer counter
overflow interrupt and the timestamp interrupt. These interrupts are cleared by reading the
CAN_SR register.
• Message object interrupt
• System interrupts
– Data registers in the mailbox object are available to the application. In Receive
– A sent transmission was aborted.
– Bus-off interrupt: The CAN module enters the bus-off state.
– Error-passive interrupt: The CAN module enters Error Passive Mode.
– Error-active Mode: The CAN module is neither in Error Passive Mode nor in Bus-
– Warn Limit interrupt: The CAN module is in Error-active Mode, but at least one of
– Wake-up interrupt: This interrupt is generated after a wake-up and a bus
– Sleep interrupt: This interrupt is generated after a Low-power Mode enable once
– Internal timer counter overflow interrupt: This interrupt is generated when the
– Timestamp interrupt: This interrupt is generated after the reception or the
Mode, a new message was received. In Transmit Mode, a message was
transmitted successfully.
off mode.
its error counter value exceeds 96.
synchronization.
all pending messages in transmission have been sent.
internal timer rolls over.
transmission of a start of frame or an end of frame. The value of the internal
counter is copied in the CAN_TIMESTP register.
AT91SAM7A3 Preliminary
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