AT91SAM9M10-CU Atmel, AT91SAM9M10-CU Datasheet - Page 61

• Manufacturer Part Number: AT91SAM9M10-CU
• Description: IC MCU 16/32BIT ARM9 324TFBGA
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM9M10-CU

• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 400MHz
• Connectivity: EBI/EMI, Ethernet, I²C, SPI, SSC, UART/USART, USB
• Peripherals: AC'97, DMA, LCD, POR, PWM, WDT
• Number Of I /o: 160
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: ROM
• Ram Size: 128K x 8
• Voltage - Supply (vcc/vdd): 0.9 V ~ 1.1 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 324-TFBGA
• Processor Series: AT91SAMx
• Core: ARM926EJ-S
• Data Bus Width: 32 bit
• Data Ram Size: 32 KB
• Interface Type: 2-Wire, SPI, USART
• Maximum Clock Frequency: 133 MHz
• Number Of Programmable I/os: 5
• Number Of Timers: 2 x 16 bit
• Operating Supply Voltage: 1.65 V to 3.6 V
• 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, AT91SAM9M10-G45-EK
• Controller Family/series: AT91
• No. Of I/o's: 160
• Ram Memory Size: 64KB
• Cpu Speed: 400MHz
• No. Of Timers: 2
• Rohs Compliant: Yes
• Cpu Family: AT91
• Device Core: ARM926EJ-S
• Device Core Size: 32b
• Frequency (max): 400MHz
• Total Internal Ram Size: 64KB
• # I/os (max): 160
• Number Of Timers - General Purpose: 7
• Operating Supply Voltage (typ): 1.8/2.5/3.3V
• Operating Supply Voltage (max): 1.1/1.95/3.6V
• Operating Supply Voltage (min): 0.9/1.65/1.8/3V
• On-chip Adc: 8-chx10-bit
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 324
• Package Type: TFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

11.4.2
11.4.2.1
6355B–ATARM–21-Jun-10
Valid Code Detection
ARM Exception Vectors Check
Figure 11-3. Remap Action after Download Completion
The NVM bootloader program initializes the NVM. It initializes the required PIO. It sets the right
peripheral depending on the NVM and tries to access the memory. If the initialization fails, it
restores the reset values for the PIO and peripherals and then the next NVM bootloader program
is executed.
If the initialization is successful, the NVM bootloader program reads the beginning of the NVM
and determines if the NVM contains valid code.
If the NVM does not contain valid code, the NVM bootloader program restores the reset value for
the peripherals and then the next NVM bootloader program is executed.
If valid code is found, this code is loaded from NVM into internal SRAM and executed by branch-
ing at address 0x0000_0000 after remap. This code may be the application code or a second-
level bootloader. All the calls to functions are PC relative and do not use absolute addresses.
There are two kinds of valid code detection. Depending on the NVM bootloader, either one or
both of them is used.
The NVM bootloader program reads and analyzes the first 28 bytes corresponding to the first
seven ARM exception vectors. Except for the sixth vector, these bytes must implement the ARM
instructions for either branch or load PC with PC relative addressing.
Figure 11-4. LDR Opcode
31
1
1
1
28 27
0
0x0000_0000
0x0030_0000
0x0040_0000
0
1
I
24 23
P
U
Internal
Internal
Internal
ROM
SRAM
ROM
1
W 0
20 19
Rn
REMAP
16 15
Rd
Internal
Internal
Internal
SRAM
SRAM
ROM
12 11
AT91SAM9M10
0x0000_0000
0x0030_0000
0x0040_0000
O set
0
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