參數(shù)資料
型號(hào): M38B5
廠商: Mitsubishi Electric Corporation
英文描述: Single Chip 8 Bits Microcomputer(8位單片機(jī))
中文描述: 單芯片8位單片機(jī)(8位單片機(jī))
文件頁數(shù): 36/69頁
文件大?。?/td> 1011K
代理商: M38B5
MITSUBISHI MICROCOMPUTERS
38B5 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
36
PRELIMINARY
Notice: This s not a final specification.
Some parametric imits are subject to change.
FLD Controller
The 38B5 group has fluorescent display (FLD) drive and control cir-
cuits.
The FLD controller consists of the following components:
40 pins for FLD control pins
FLDC mode register
FLD data pointer
FLD data pointer reload register
Tdisp time set register
Toff1 time set register
Toff2 time set register
Port P0FLD/port switch register
Port P2FLD/port switch register
Port P8FLD/port switch register
Port P8 FLD output control register
FLD automatic display RAM (max. 160 bytes)
A gradation display mode can be used for bright/dark display as a
display function.
Fig. 39 Block Diagram for FLD Control Circuit
P2
0
/FLD
0
P2
1
/FLD
1
P2
2
/FLD
2
P2
3
/FLD
3
P2
4
/FLD
4
P2
5
/FLD
5
P2
6
/FLD
6
P2
7
/FLD
7
0004
16
FLD/P
FLD/P
FLD/P
FLD/P
0EFA
16
FLD/P
FLD/P
FLD/P
FLD/P
8
0000
16
0EF9
16
8
P0
0
/FLD
8
P0
1
/FLD
9
P0
2
/FLD
10
P0
3
/FLD
11
P0
4
/FLD
12
P0
5
/FLD
13
P0
6
/FLD
14
P0
7
/FLD
15
FLD/P
FLD/P
FLD/P
FLD/P
FLD/P
FLD/P
FLD/P
FLD/P
0002
16
8
P1
0
/FLD
16
P1
1
/FLD
17
P1
2
/FLD
18
P1
3
/FLD
19
P1
4
/FLD
20
P1
5
/FLD
21
P1
6
/FLD
22
P1
7
/FLD
23
0006
16
8
P3
0
/FLD
24
P3
1
/FLD
25
P3
2
/FLD
26
P3
3
/FLD
27
P3
4
/FLD
28
P3
5
/FLD
29
P3
6
/FLD
30
P3
7
/FLD
31
0010
16
0EFB
16
8
P8
0
/FLD
32
P8
1
/FLD
33
P8
2
/FLD
34
P8
3
/FLD
35
P8
4
/FLD
36
P8
5
/FLD
37
P8
6
/FLD
38
P8
7
/FLD
39
FLD/P
FLD/P
FLD/P
FLD/P
FLD/P
FLD/P
FLD/P
FLD/P
0F60
16
0FFF
16
Main address bus
Local address bus
F
Main
data bus
Local
data bus
FLD blanking interrupt
FLD digit interrupt
FLDC mode register
(0EF4
16
)
FLD data pointer
reload register
(0EF8
16
)
FLD data pointer
(0EF8
16
)
Timing generator
Address
decoder
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