SAM9G20 Atmel Corporation, SAM9G20 Datasheet - Page 436
SAM9G20
Manufacturer Part Number
SAM9G20
Description
Manufacturer
Atmel Corporation
Datasheets
1.SAM9261.pdf
(248 pages)
2.SAM9261.pdf
(1274 pages)
3.SAM9261.pdf
(43 pages)
4.SAM9G20.pdf
(42 pages)
5.SAM9G20.pdf
(832 pages)
Specifications of SAM9G20
Flash (kbytes)
0 Kbytes
Pin Count
217
Max. Operating Frequency
400 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)
1
Uart
7
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)
95
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)
0.9 to 1.1
Fpu
No
Mpu / Mmu
No/Yes
Timers
6
Output Compare Channels
6
Input Capture Channels
6
32khz Rtc
Yes
Calibrated Rc Oscillator
No
- SAM9261 PDF datasheet
- SAM9261 PDF datasheet #2
- SAM9261 PDF datasheet #3
- SAM9G20 PDF datasheet #4
- SAM9G20 PDF datasheet #5
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Figure 30-6. Burst Write Access, Row Closed, DDR2-SDRAM Device
Figure 30-7. Burst Write Access, Row Closed, SDR-SDRAM Device
436
436
COMMAND
COMMAND
DQS[1:0]
DM[1:0]
D [15:0]
DM[3:0]
SDCLK
SDCLK
BA[1:0]
A[12:0]
A[12:0]
BA[1:0]
D[31:0]
SAM9G35
SAM9G35
0
NOP
0
F
3
NOP
PRCHG
A write command can be followed by a read command. To avoid breaking the current write
burst, Twtr/Twrd (bl/2 + 2 = 6 cycles) should be met. See
Trp = 2
PRCHG
Row a
NOP
Trp
Row a
ACT
NOP
Trcd = 2
NOP
ACT
col a
WRITE
Trcd
NOP
Col a
Da
NOP
Da Db
WRITE
Dc Dd
0
Db
De Df
Dc
NOP
Dd
Figure 30-8 on page
Dg Dhs
0
De
Df
BST
Dg
Dh
F
11053B–ATARM–22-Sep-11
11053B–ATARM–22-Sep-11
NOP
437.
3
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