SAM9XE256 Atmel Corporation, SAM9XE256 Datasheet - Page 39
SAM9XE256
Manufacturer Part Number
SAM9XE256
Description
Manufacturer
Atmel Corporation
Datasheets
1.SAM9260.pdf
(290 pages)
2.SAM9261.pdf
(248 pages)
3.SAM9XE128.pdf
(860 pages)
4.SAM9XE128.pdf
(48 pages)
Specifications of SAM9XE256
Flash (kbytes)
256 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
- SAM9260 PDF datasheet
- SAM9261 PDF datasheet #2
- SAM9XE128 PDF datasheet #3
- SAM9XE128 PDF datasheet #4
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- Download datasheet (2Mb)
ARM DDI0198D
The line length of the cache is determined by the Len field. The Len field is bits [13:12]
for the DCache and bits [1:0] for the ICache. Table 2-9 shows the line length encoding.
The cache type register values for an ARM926EJ-S processor with the following
configuration are shown in Table 2-10:
•
•
•
•
•
See Cache Lockdown Register c9 on page 2-26 for more details on Format C for cache
lockdown.
Function
Reserved
Ctype
S
Dsize
Copyright © 2001-2003 ARM Limited. All rights reserved.
separate instruction and data caches
DCache size = 8KB, ICache size = 16KB
associativity = 4-way
line length = eight words
caches use write-back, register 7 for cache cleaning, and Format C for cache
lockdown.
Reserved
Size
Assoc
M
Len
Register bits
[31:29]
[28:25]
[24]
[23:22]
[21:18]
[17:15]
[14]
[13:12]
Table 2-10 Example Cache Type Register format
Value
b000
b1110
b1 = Harvard cache
b00
b0100 = 8KB
b010 = 4-way
b0
b10 = 8 words per line (32 bytes)
Len field
b10
Other values
Table 2-9 Line length encoding
Cache line length
8 words (32 bytes)
Reserved
Programmer’s Model
2-11
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