SAM9XE512 Atmel Corporation, SAM9XE512 Datasheet - Page 50

• 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

Programmer’s Model
2.6
2-8
Operating modes
The ARM9E-S has seven modes of operation:
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Modes other than User mode are collectively known as privileged modes. Privileged
modes are used to service interrupts or exceptions, or to access protected resources.
User mode is the usual ARM program execution state, and is used for executing
most application programs.
Fast interrupt (FIQ) mode is used for handling fast interrupts.
Interrupt (IRQ) mode is used for general-purpose interrupt handling.
Supervisor mode is a protected mode for the operating system.
Abort mode is entered after a data or instruction Prefetch Abort.
System mode is a privileged user mode for the operating system.
Undefined mode is entered when an undefined instruction exception occurs.
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ARM DDI 0165B