SAM9XE512 Atmel Corporation, SAM9XE512 Datasheet - Page 82

• Manufacturer Part Number: SAM9XE512
• Manufacturer: Atmel Corporation

Specifications of SAM9XE512

• Flash (kbytes): 512 Kbytes
• Pin Count: 217
• Max. Operating Frequency: 180 MHz
• Cpu: ARM926
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 96
• Ext Interrupts: 96
• Usb Transceiver: 3
• Usb Speed: Full Speed
• Usb Interface: Host, Device
• Spi: 2
• Twi (i2c): 2
• Uart: 6
• Ssc: 1
• Ethernet: 1
• Sd / Emmc: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: Yes
• Adc Channels: 4
• Adc Resolution (bits): 10
• Adc Speed (ksps): 312
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 32
• Self Program Memory: NO
• External Bus Interface: 1
• Dram Memory: sdram
• Nand Interface: Yes
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8/3.3
• Operating Voltage (vcc): 1.65 to 1.95
• Fpu: No
• Mpu / Mmu: No / Yes
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

13.4.4
82
AT91SAM9XE128/256/512 Preliminary
In-Application Programming (IAP) Feature
The IAP feature is a function located in ROM that can be called by any software application.
When called, this function sends the desired FLASH command to the EEFC and waits for the
FLASH to be ready (looping while the FRDY bit is not set in the MC_FSR register).
Since this function is executed from ROM, this allows FLASH programming (like sector write) to
be done by code running in FLASH.
The IAP function entry point is retrieved by reading the SWI vector in ROM (0x100008).
This function takes one argument in parameter: the command to be sent to the EEFC.
This function returns the value of the MC_FSR register.
IAP software code example:
(unsigned int) (*IAP_Function)(unsigned long);
void main (void)
{
/* Initialize the function pointer (retrieve function address from SWI
vector) */
/* Send your data to the sector */
/* build the command to send to EFC */
/* Call the IAP function with appropriate command */
}
unsigned long FlashSectorNum = 200;
unsigned long flash_cmd = 0;
unsigned long flash_status = 0;
IAP_Function = ((unsigned long) (*)(unsigned long)) 0x100008;
flash_cmd =
flash_status = IAP_Function (flash_cmd);
(0x5A << 24) | (FlashSectorNum << 8) | AT91C_MC_FCMD_EWP;
6254C–ATARM–22-Jan-10