SAM9M11 Atmel Corporation, SAM9M11 Datasheet - Page 25
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SAM9M11
Manufacturer Part Number
SAM9M11
Description
Manufacturer
Atmel Corporation
Specifications of SAM9M11
Flash (kbytes)
0 Kbytes
Pin Count
324
Max. Operating Frequency
400 MHz
Cpu
ARM926
Hardware Qtouch Acquisition
No
Max I/o Pins
160
Ext Interrupts
160
Usb Transceiver
3
Usb Speed
Hi-Speed
Usb Interface
Host, Device
Spi
2
Twi (i2c)
2
Uart
5
Lin
4
Ssc
2
Ethernet
1
Sd / Emmc
2
Graphic Lcd
Yes
Video Decoder
Yes
Camera Interface
Yes
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
440
Resistive Touch Screen
Yes
Dac Resolution (bits)
No
Temp. Sensor
No
Crypto Engine
AES/DES
Sram (kbytes)
64
Self Program Memory
NO
External Bus Interface
2
Dram Memory
DDR2/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
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1.1.2
ARM DDI 0029G
Memory access
During normal operation, while one instruction is being executed, its successor is being
decoded, and a third instruction is being fetched from memory.
The program counter points to the instruction being fetched rather than to the instruction
being executed. This is important because it means that the Program Counter (PC)
value used in an executing instruction is always two instructions ahead of the address.
The ARM7TDMI core has a Von Neumann architecture, with a single 32-bit data bus
carrying both instructions and data. Only load, store, and swap instructions can access
data from memory.
Data can be:
•
•
•
Words must be aligned to 4-byte boundaries. Halfwords must be aligned to 2-byte
boundaries.
8-bit (bytes)
16-bit (halfwords)
32-bit (words).
Copyright © 1994-2001. All rights reserved.
Execute
Decode
Fetch
Instruction fetched from memory
Decoding of registers used in
instruction
Register(s) read from register bank
Perform shift and ALU operations
Write register(s) back to register bank
Figure 1-1 Instruction pipeline
Introduction
1-3
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