SAM9M10 Atmel Corporation, SAM9M10 Datasheet - Page 100
SAM9M10
Manufacturer Part Number
SAM9M10
Description
Manufacturer
Atmel Corporation
Datasheets
1.M40800.pdf
(284 pages)
2.SAM9261.pdf
(248 pages)
3.SAM9M10.pdf
(59 pages)
4.SAM9M10.pdf
(1398 pages)
Specifications of SAM9M10
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
Temp. Sensor
No
Crypto Engine
No
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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Caches and Write Buffer
4.2
4-4
Write buffer
The write buffer is used for all writes to a noncachable, bufferable region, write-through
region, and write misses to a write-back region. A separate buffer is incorporated in the
DCache for holding write-back data for cache line evictions or cleaning of dirty cache
lines.
The main write buffer has a 16-word data buffer and a four-address buffer.
The DCache write-back buffer has eight data word entries and a single address entry.
The MCR drain write buffer instruction enables both write buffers to be drained under
software control.
The MCR wait for interrupt causes both write buffers to be drained and the
ARM926EJ-S processor to be put into a low-power state until an interrupt occurs.
Write buffer behavior is described in Table 4-4 on page 4-6.
No forwarding takes place for read accesses which have corresponding pending writes
in the write buffer. For such accesses the write buffer is drained and the value fetched
from external memory.
Copyright © 2001-2003 ARM Limited. All rights reserved.
ARM DDI0198D
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