SAM9XE256 Atmel Corporation, SAM9XE256 Datasheet - Page 140
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
- Current page: 140 of 248
- Download datasheet (2Mb)
Tightly-Coupled Memory Interface
5.9
5-32
TCM clock gating
If the ARM926EJ-S processor is not currently running code from a TCM region, the
idle signal for that TCM (DRIDLE for DTCM, IRIDLE for ITCM) is asserted. This
indicates that a TCM access will not be performed in that cycle, enabling you to stop
the TCM clock. If no clock stopping is required, you can ignore the idle signals.
You can also use the idle signal to disable power to the RAMs if you require more
stringent power control. Removing the RAM power invalidates the RAM contents so
you must only do this if the TCMs are not being used and do not contain valid data.
Copyright © 2001-2003 ARM Limited. All rights reserved.
ARM DDI0198D
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