參數(shù)資料
型號: SCE5744
元件分類: 顯示用LED
英文描述: 5X7 DOT MATRIX DISPLAY, HIGH EFFICIENCY GREEN, 4.57 mm
封裝: ROHS COMPLIANT, PLASTIC, DIP-14
文件頁數(shù): 5/16頁
文件大?。?/td> 725K
代理商: SCE5744
SCE5740, SCE5741, SCE5742, SCE5743, SCE5744, SCE5745
2006-03-30
13
Cascading Multiple Displays using only the SCE574x.
Multiple displays can be cascaded using the CLK SEL and CLK I/O pins (Figure Cascading Multiple Displays using only the SCE574X“
(page 13)). The display designated as the MasterClock source should have its CLK SEL pin tied high and the slaves should have their
CLK SEL pins tied low. All CLK I/O pins should be tied together. One display CLK I/O can drive 15 slave CLK I/Os. Use RST to synchro-
nize all display counters.
Loading Data into the Display
Use following procedure to load data into the display:
1.
Power up the display.
2.
Bring RST low (600 ns duration minimum) to clear the Multi-
plex Counter, Address Register, Control Word
Register, User Ram and Data Register. The display will be
blank. Display brightness is set to 100%.
3.
If a different brightness is desired, load the proper brightness
opcode into the Control Word Register.
4.
Load the Digit Address into the display.
5.
Load display row and column data for the selected digit.
6.
Repeat steps 4 and 5 for all digits.
IDCD5030
RST
CLK SEL
Intelligent Display
CC
V
DATA
SDCLK
LOAD
14 more displays
in between
DATA
SDCLK
Decoder
Address
Address Decode 1-14
A0
A1
A3
RST
CLK I/O
Intelligent Display
DATA
RST
SDCLK
CLK I/O
LOAD
CLK SEL
Chip
0
15
A2
LD
CE
Data Contents for the Word “ABCD”
Step
D7
D6
D5
D4
D3
D2
D1
D0
Function
A
B (optional)
1
0
1
00
0
00
0
CLEAR
100% BRIGHTNESS
1
2
3
4
5
6
7
8
10
1
00
0
00
0
100
01
0
1
0
10
0
1
11
1
0
001
1
0
001
10
0
1
DIGIT D0 SELECT
ROW 0 (A)
ROW 1 (A)
ROW 2 (A)
ROW 3 (A)
ROW 4 (A)
ROW 5 (A)
ROW 6 (A)
9
10
11
12
13
14
15
16
1
0
1
00
0
001
1
111
1
0
001
10
0
1
11
1
0
10
0
1
10
0
1
11
1
DIGIT D1 SELECT
ROW 0 (B)
ROW 1 (B)
ROW 2 (B)
ROW 3 (B)
ROW 4 (B)
ROW 5 (B)
ROW 6 (B)
17
18
19
20
21
22
23
24
1
0
1
0
00
0
1
0
111
0
1
000
10
0
10
0
1
0
000
01
0
00
1
DIGIT D2 SELECT
ROW 0 (C)
ROW 1 (C)
ROW 2 (C)
ROW 3 (C)
ROW 4 (C)
ROW 5 (C)
ROW 6 (C)
25
26
27
28
29
30
31
32
1
0
1
0
011
11
1
0
10
0
1
0
001
10
0
1
10
0
1
0
001
1
110
DIGIT D3 SELECT
ROW 0 (D)
ROW 1 (D)
ROW 2 (D)
ROW 3 (D)
ROW 4 (D)
ROW 5 (D)
ROW 6 (D)
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