SAM9R64 Atmel Corporation, SAM9R64 Datasheet - Page 58
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SAM9R64
Manufacturer Part Number
SAM9R64
Description
Manufacturer
Atmel Corporation
Datasheets
1.M40800.pdf
(284 pages)
2.SAM9260.pdf
(290 pages)
3.SAM9261.pdf
(248 pages)
4.SAM9R64.pdf
(903 pages)
5.SAM9R64.pdf
(52 pages)
Specifications of SAM9R64
Flash (kbytes)
0 Kbytes
Pin Count
144
Max. Operating Frequency
240 MHz
Cpu
ARM926
Hardware Qtouch Acquisition
No
Max I/o Pins
49
Ext Interrupts
49
Usb Transceiver
1
Usb Speed
Hi-Speed
Usb Interface
Device
Spi
1
Twi (i2c)
1
Uart
5
Ssc
1
Sd / Emmc
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
3
Adc Resolution (bits)
10
Adc Speed (ksps)
220
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
64
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)
1.08 to 1.32
Fpu
No
Mpu / Mmu
No / Yes
Timers
3
Output Compare Channels
3
Input Capture Channels
3
Pwm Channels
3
32khz Rtc
Yes
Calibrated Rc Oscillator
No
- M40800 PDF datasheet
- SAM9260 PDF datasheet #2
- SAM9261 PDF datasheet #3
- SAM9R64 PDF datasheet #4
- SAM9R64 PDF datasheet #5
- Current page: 58 of 284
- Download datasheet (2Mb)
Programmer’s Model
2.6.4
2-12
Accessing high registers in Thumb state
Registers r0–r7 are known as the low registers. Registers r8–r15 are known as the high
registers.
In Thumb state, the high registers, r8–r15, are not part of the standard register set. The
assembly language programmer has limited access to them, but can use them for fast
temporary storage.
You can use special variants of the MOV instruction to transfer a value from a low
register, in the range r0–r7, to a high register, and from a high register to a low register.
The CMP instruction allows you to compare high register values with low register
values. The ADD instruction enables you to add high register values to low register
values. For more details, please refer to the ARM Architecture Reference Manual.
Note
Copyright © 1994-2001. All rights reserved.
ARM DDI 0029G
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