AT91SAM9G46-CU Atmel, AT91SAM9G46-CU Datasheet - Page 26

• Manufacturer Part Number: AT91SAM9G46-CU
• Description: IC ARM9 MCU 324TFBGA
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM9G46-CU

• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 400MHz
• Connectivity: EBI/EMI, Ethernet, I²C, IrDA, MMC, SPI, SSC, UART/USART, USB
• Peripherals: AC'97, DMA, I²S, 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: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

7.2.4.1
7.2.4.2
26
SAM9G46
BMS = 1, boot on embedded ROM
BMS = 0, boot on external memory
The system boots on Boot Program.
For optimization purpose, nothing else is done. To speed up the boot sequence user pro-
grammed software should perform a complete configuration:
• Boot on on-chip RC
• Enable the 32768 Hz oscillator
• Auto baudrate detection
• Downloads and runs an application from external storage media into internal SRAM
• Downloaded code size depends on embedded SRAM size
• Automatic detection of valid application
• Bootloader on a non-volatile memory
• SAM-BA Boot in case no valid program is detected in external NVM, supporting
• Boot on on-chip RC
• Boot with the default configuration for the Static Memory Controller, byte select mode, 16-bit
• Enable the 32768 Hz oscillator if best accuracy needed
• Program the PMC (main oscillator enable or bypass mode)
• Program and Start the PLL
• Reprogram the SMC setup, cycle, hold, mode timings registers for EBI CS0 to adapt them to
• Switch the main clock to the new value
data bus, Read/Write controlled by Chip Select, allows boot on 16-bit non-volatile memory.
the new clock
– SPI DataFlash/SerialFlash connected on NPCS0 of the SPI0
– SDCard
– NandFlash
– EEPROM connected on TWI0
– Serial communication on a DBGU
– USB Device HS Port
11028CS–ATARM–8-Apr-11