SAM9XE512 Atmel Corporation, SAM9XE512 Datasheet - Page 57

• 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

2.7.4
ARM DDI 0165B
Accessing high registers in Thumb state
In Thumb state, the high registers (r8–r15) are not part of the standard register set. With
assembly language programming you have limited access to them, but can use them for
fast temporary storage.
You can use special variants of the
(in the range r0–r7) to a high register, and from a high register to a low register. The
instruction allows you to compare high register values with low register values. The
ADD
details, refer to the ARM Architecture Reference Manual.
instruction allows you to add high register values to low register values. For more
Copyright © 2000 ARM Limited. All rights reserved.
MOV
instruction to transfer a value from a low register
Programmer’s Model
CMP
2-15