SAM9261 Atmel Corporation, SAM9261 Datasheet - Page 80
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SAM9261
Manufacturer Part Number
SAM9261
Description
Manufacturer
Atmel Corporation
Datasheets
1.SAM9260.pdf
(290 pages)
2.SAM9261.pdf
(248 pages)
3.SAM9261.pdf
(749 pages)
4.SAM9261.pdf
(44 pages)
5.SAM9261.pdf
(1274 pages)
6.SAM9261.pdf
(43 pages)
Specifications of SAM9261
Flash (kbytes)
0 Kbytes
Pin Count
217
Max. Operating Frequency
240 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)
1
Uart
4
Ssc
3
Sd / Emmc
1
Graphic Lcd
Yes
Video Decoder
No
Camera Interface
No
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
160
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
32khz Rtc
Yes
Calibrated Rc Oscillator
No
- SAM9260 PDF datasheet
- SAM9261 PDF datasheet #2
- SAM9261 PDF datasheet #3
- SAM9261 PDF datasheet #4
- SAM9261 PDF datasheet #5
- SAM9261 PDF datasheet #6
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- Download datasheet (5Mb)
Memory Interface
4.3
4.3.1
4.3.2
4-4
Instruction interface addressing signals
IA[31:1]
ITBIT
The address class signals for the instruction memory interface are:
•
•
•
•
IA[31:1] is the 31-bit address bus that specifies the address for the transfer. All
addresses are byte addresses, so a burst of 32-bit instruction fetches results in the
address bus incrementing by four for each cycle.
The ARM9E-S does not produce IA[0] as all instruction accesses are halfword-aligned
(that is, IA[0] = 0).
The address bus provides 4GB of linear addressing space. When a word access is
signaled the memory system must ignore IA[1].
The ITBIT signal encodes the size of the instruction fetch. The ARM9E-S can request
word-sized instructions (when in ARM state) or halfword-sized instructions (when in
Thumb state). This is encoded on ITBIT as shown in Table 4-1.
The size of transfer does not change during a burst of S cycles.
IA[31:1]
ITBIT
InTRANS on page 4-5
InM[4:0] on page 4-5.
Note
Copyright © 2000 ARM Limited. All rights reserved.
ITBIT
1
0
Table 4-1 Transfer widths
Transfer width
Halfword
Word
ARM DDI 0165B
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