SAM9M11 Atmel Corporation, SAM9M11 Datasheet - Page 78
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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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Memory Interface
3.3.4
3-8
Merged IS cycles
Where possible the ARM7TDMI processor broadcasts the address for the next access,
so that decode can start, but the memory controller must not commit to a memory
access. This is shown in Figure 3-4 and, is further described in Nonsequential memory
cycle on page 3-6.
Where possible, the ARM7TDMI processor performs an optimization on the bus to
allow extra time for memory decode. When this happens, the address of the next
memory cycle is broadcast on this bus during an internal cycle. This enables the
memory controller to decode the address, but it must not initiate a memory access
during this cycle. In a merged IS cycle, the next cycle is a sequential cycle to the same
memory location. This commits to the access, and the memory controller must initiate
the memory access. This is shown in Figure 3-5 on page 3-9.
Copyright © 1994-2001. All rights reserved.
nMREQ
D[31:0]
A[31:0]
MCLK
nRAS
nCAS
SEQ
N-cycle
a
a+4
S-cycle
Figure 3-4 Internal cycles
a+8
I-cycle
ARM DDI 0029G
a+12
C-cycle
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