SAM7X256 Atmel Corporation, SAM7X256 Datasheet - Page 553

• Manufacturer Part Number: SAM7X256
• Manufacturer: Atmel Corporation

Specifications of SAM7X256

• Flash (kbytes): 256 Kbytes
• Pin Count: 100
• Max. Operating Frequency: 55 MHz
• Cpu: ARM7TDMI
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 62
• Ext Interrupts: 62
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 2
• Twi (i2c): 1
• Uart: 3
• Can: 1
• Ssc: 1
• Ethernet: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 384
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 64
• Self Program Memory: NO
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 3.3
• Operating Voltage (vcc): 3.0 to 3.6
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 3
• Output Compare Channels: 3
• Input Capture Channels: 3
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

36.8.16
Name:
Access Type:
These register fields are updated each time a message transfer is received or aborted.
MMI is cleared by reading the CAN_MSRx register.
MRDY, MABT are cleared by writing MTCR or MACR in the CAN_MCRx register.
Warning: MRTR and MDLC state depends partly on the mailbox object type.
• MTIMESTAMP: Timer value
This field is updated only when time-triggered operations are disabled (TTM cleared in CAN_MR register). If the TEOF field
in the CAN_MR register is cleared, TIMESTAMP is the internal timer value at the start of frame of the last message
received or sent by the mailbox. If the TEOF field in the CAN_MR register is set, TIMESTAMP is the internal timer value at
the end of frame of the last message received or sent by the mailbox.
In Time Triggered Mode, MTIMESTAMP is set to 0.
• MDLC: Mailbox Data Length Code
6120I–ATARM–06-Apr-11
MTIMESTAMP15 MTIMESTAMP14 MTIMESTAMP13 MTIMESTAMP12 MTIMESTAMP11 MTIMESTAMP10
MTIMESTAMP7
Mailbox Object Type
Receive
Receive with overwrite
Transmit
Consumer
Producer
MRDY
31
23
15
–
7
CAN Message Status Register
MTIMESTAMP6
MABT
30
22
14
Read-only
–
6
CAN_MSRx
MTIMESTAMP5
Description
Length of the first mailbox message received
Length of the last mailbox message received
No action
Length of the mailbox message received
Length of the mailbox message to be sent after the remote frame reception
29
21
13
–
–
5
MTIMESTAMP4
MRTR
28
20
12
–
4
MTIMESTAMP3
27
19
11
–
3
MTIMESTAMP2
26
18
10
–
2
SAM7X512/256/128
MDLC
MTIMESTAMP9
MTIMESTAMP1
25
17
–
9
1
MTIMESTAMP8
MTIMESTAMP0
MMI
24
16
8
0
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