SAM9G20 Atmel Corporation, SAM9G20 Datasheet - Page 1087
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
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- SAM9261 PDF datasheet #3
- SAM9G20 PDF datasheet #4
- SAM9G20 PDF datasheet #5
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45.6.11.4
Figure 45-10. 256-level Alpha Blending
45.6.11.5
11053B–ATARM–22-Sep-11
11053B–ATARM–22-Sep-11
Source Color Keying
Destination Color Keying
Window Blending
Color Keying
Base Image
Color keying involves a method of bit-block image transfer (Blit). This entails blitting one image
onto another where not all the pixels are copied. Blitting usually involves two bitmaps, a source
bitmap and a destination bitmap. A raster operation (ROP) is performed to define whether the
iterated color or the overlay color is to be visible or not.
If the masked overlay color matches the color key then the iterated color is selected. Source
Color Keying is activated using the following configuration.
When the Mask register is set to zero, the comparison is disabled and the raster operation is
activated.
If the iterated masked color matches the color key then the overlay color is selected. Destination
Color Keying is activated using the following configuration:
• Select the Overlay to Blit
• Set DSTKEY field to zero
• Activate Color Keying setting CRKEY field to 1
• Program Color Key writing RKEY, GKEY and BKEY fields
• Program Color Mask writing RKEY, GKEY and BKEY fields
• Select the Overlay to Blit
• Set DSTKEY field to one
Video Prioritization Algorithm 1: OVR1 > HEO > BASE
HEO 75 %
OVR1 25 %
SAM9G35
SAM9G35
1087
1087
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