AT91SAM9G45-EKES Atmel, AT91SAM9G45-EKES Datasheet - Page 1106
![KIT EVAL FOR AT91SAM9G45](/photos/9/26/92642/at91sam9g45-ekes_sml.jpg)
AT91SAM9G45-EKES
Manufacturer Part Number
AT91SAM9G45-EKES
Description
KIT EVAL FOR AT91SAM9G45
Manufacturer
Atmel
Series
AT91SAM Smart ARMr
Type
MCUr
Datasheets
1.AT91SAM9G45-EKES.pdf
(56 pages)
2.AT91SAM9G45-EKES.pdf
(1218 pages)
3.AT91SAM9G45-EKES.pdf
(66 pages)
Specifications of AT91SAM9G45-EKES
Contents
Board
Processor To Be Evaluated
SAM9G45
Data Bus Width
32 bit
Interface Type
I2C, SPI, UART
Maximum Operating Temperature
+ 50 C
Minimum Operating Temperature
- 10 C
Operating Supply Voltage
1.8 V to 3.3 V
For Use With/related Products
AT91SAM9G45
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
Q4626953
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AT91SAM9G45
Table 45-11
Table 45-11. Dithering Duty Cycle
The duty cycles for gray levels 0 and 15 are 0 and 1, respectively.
The same DP_i register can be used for the pairs for which the sum of duty cycles is 1 (e.g., 1/7
and 6/7). The dithering pattern for the first pair member is the inversion of the one for the
second.
The DP_i registers contain a series of 4-bit patterns. The (3-m)
pixel with horizontal coordinate x = 4n + m (n is an integer and m ranges from 0 to 3) should be
turned on or off in the current frame. The operation is shown by the examples below.
Consider the pixels a, b, c and d with the horizontal coordinates 4*n+0, 4*n+1, 4*n+2 and 4*n+3,
respectively. The four pixels should be displayed in gray level 9 (duty cycle 3/5) so the register
used is DP3_5 =”1010 0101 1010 0101 1111”.
The output sequence obtained in the data output for monochrome mode is shown in
12.
Table 45-12. Dithering Algorithm for Monochrome Mode
Gray Level
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Frame
Number
N
N+1
N+2
N+3
shows the correspondences between the gray levels and the duty cycle.
Pattern
1010
0101
1010
0101
Duty Cycle
1
6/7
4/5
3/4
5/7
2/3
3/5
4/7
1/2
3/7
2/5
1/3
1/4
1/5
1/7
0
Pixel a
ON
OFF
ON
OFF
Pixel b
OFF
ON
OFF
ON
th
bit of the pattern determines if a
Pattern Register
-
DP6_7
DP4_5
DP3_4
DP5_7
DP2_3
DP3_5
DP4_7
~DP1_2
~DP4_7
~DP3_5
~DP2_3
~DP3_4
~DP4_5
~DP6_7
-
Pixel c
ON
OFF
ON
OFF
6438F–ATARM–21-Jun-10
Pixel d
OFF
ON
OFF
ON
Table 45-
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