SAM9X25 Atmel Corporation, SAM9X25 Datasheet - Page 234
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SAM9X25
Manufacturer Part Number
SAM9X25
Description
Manufacturer
Atmel Corporation
Datasheets
1.SAM9261.pdf
(248 pages)
2.SAM9X25.pdf
(45 pages)
3.SAM9X25.pdf
(1145 pages)
4.SAM9X25.pdf
(45 pages)
5.SAM9X25.pdf
(1325 pages)
Specifications of SAM9X25
Flash (kbytes)
0 Kbytes
Pin Count
217
Max. Operating Frequency
400 MHz
Cpu
ARM926
Hardware Qtouch Acquisition
No
Max I/o Pins
105
Ext Interrupts
105
Usb Transceiver
3
Usb Speed
Hi-Speed
Usb Interface
Host, Device
Spi
2
Twi (i2c)
3
Uart
7
Can
2
Lin
4
Ssc
1
Ethernet
2
Sd / Emmc
2
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
12
Adc Resolution (bits)
10
Adc Speed (ksps)
440
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
32
Self Program Memory
NO
External Bus Interface
1
Dram Memory
DDR/LPDDR, SDRAM/LPSDR
Nand Interface
Yes
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.8/3.3
Operating Voltage (vcc)
0.9 to 1.1
Fpu
No
Mpu / Mmu
No/Yes
Timers
6
Output Compare Channels
6
Input Capture Channels
6
Pwm Channels
4
32khz Rtc
Yes
Calibrated Rc Oscillator
No
- SAM9261 PDF datasheet
- SAM9X25 PDF datasheet #2
- SAM9X25 PDF datasheet #3
- SAM9X25 PDF datasheet #4
- SAM9X25 PDF datasheet #5
- Current page: 234 of 248
- Download datasheet (2Mb)
Glossary
Exception
Exception service routine
Exception vector
External Abort
Fast context switch
Fast Context Switch Extension (FCSE)
FCSE
Flat address mapping
Glossary-10
A fault or error event that is considered serious enough to require that program
execution is interrupted. Examples include attempting to perform an invalid memory
access, external interrupts, and undefined instructions. When an exception occurs,
normal program flow is interrupted and execution is resumed at the corresponding
exception vector. This contains the first instruction of the interrupt handler to deal with
the exception.
See Interrupt handler.
See Interrupt vector.
An indication from an external memory system to a core that it must halt execution of
an attempted illegal memory access. An External Abort is caused by the external
memory system as a result of attempting to access invalid memory.
See also Abort, Data Abort and Prefetch Abort.
In a multitasking system, the point at which the time-slice allocated to one process stops
and the one for the next process starts. If processes are switched often enough, they can
appear to a user to be running in parallel, as well as being able to respond quicker to
external events that might affect them.
In ARM processors, a fast context switch is caused by the selection of a non-zero PID
value to switch the context to that of the next process. A fast context switch causes each
Virtual Address for a memory access, generated by the ARM processor, to produce a
Modified Virtual Address which is sent to the rest of the memory system to be used in
place of a normal Virtual Address. For some cache control operations Virtual Addresses
are passed to the memory system as data. In these cases no address modification takes
place.
See also Fast Context Switch Extension.
An extension to the ARM architecture that enables cached processors with an MMU to
present different addresses to the rest of the memory system for different software
processes, even when those processes are using identical addresses.
See also Fast context switch.
See Fast Context Switch Extension.
A system of organizing memory in which each Physical Address contained within the
memory space is the same as its corresponding Virtual Address.
Copyright © 2001-2003 ARM Limited. All rights reserved.
ARM DDI0198D
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