AT91SAM7X128-CU Atmel, AT91SAM7X128-CU Datasheet - Page 525

• Manufacturer Part Number: AT91SAM7X128-CU
• Description: MCU ARM 128K HS FLASH 100-TFBGA
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM7X128-CU

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 55MHz
• Connectivity: CAN, Ethernet, I²C, SPI, SSC, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 62
• Program Memory Size: 128KB (128K 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-TFBGA
• For Use With: AT91SAM-ICE - EMULATOR FOR AT91 ARM7/ARM9AT91SAM7X-EK - KIT EVAL FOR AT91SAM7X256/128
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Figure 36-13. Chaining Three Mailboxes to Receive a Buffer Split into Three Messages
6120H–ATARM–17-Feb-09
(CAN_MSRx)
(CAN_MSRx)
(CAN_MSRy)
(CAN_MSRy)
(CAN_MSRz)
(CAN_MSRz)
CAN BUS
MRDY
MRDY
MRDY
MMI
MMI
MMI
If several mailboxes are chained to receive a buffer split into several messages, all mailboxes
except the last one (with the highest number) must be configured in Receive Mode. The first
message received is handled by the first mailbox, the second one is refused by the first mailbox
and accepted by the second mailbox, the last message is accepted by the last mailbox and
refused by previous ones (see
If the number of mailboxes is not sufficient (the MMI flag of the last mailbox raises), the user
must read each data received on the last mailbox in order to retrieve all the messages of the buf-
fer split (see
Message s1
Figure
36-14).
Reading CAN_MDH & CAN_MDL for mailboxes x, y and z
Reading CAN_MSRx, CAN_MSRy and CAN_MSRz
Message s2
AT91SAM7X512/256/128 Preliminary
Figure
36-13).
Message s3
Writing MBx MBy MBz in CAN_TCR
Buffer split in 3 messages
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