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參數(shù)資料
| 型號： | lCM7217BlJl |
| 廠商： | Intersil Corporation |
| 元件分類： | 通用總線功能 |
| 英文描述： | 4-Digit LED Display, Programmable Up/Down Counter |
| 中文描述： | 4位LED顯示，可編程加/減計數(shù)器 |
| 文件頁數(shù)： | 2/19頁 |
| 文件大?。?/td> | 137K |
| 代理商： | LCM7217BLJL |
9-13
Pinouts
Functional Block Diagram
ICM7217 (PDIP)
COMMON ANODE
TOP VIEW
ICM7217 (CERDIP)
COMMON CATHODE
TOP VIEW
CARRY/BORROW
ZERO
EQUAL
BCD I/O 8s
BCD I/O 4s
BCD I/O 2s
BCD I/O 1s
COUNT INPUT
STORE
UP/DOWN
LOAD REGISTER/OFF
LOAD COUNTER/I/O OFF
SCAN
RESET
D1
D3
D4
V
DD
DISPLAY CONT.
SEG
b
SEG
e
SEG
f
SEG
d
SEG
a
SEG
c
D2
SEG
g
V
SS
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
ICM7217
ICM7217B
CARRY/BORROW
ZERO
EQUAL
BCD I/O 8s
BCD I/O 4s
BCD I/O 2s
BCD I/O 1s
COUNT INPUT
STORE
UP/DOWN
LOAD REGISTER/OFF
LOAD COUNTER/I/O OFF
SCAN
RESET
SEG
d
SEG
b
SEG
f
SEG
c
V
DD
SEG
a
SEG
e
SEG
g
V
SS
D1
D2
D3
D4
DISPLAY CONT.
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
ICM7217A
ICM7217C
T.G.
D4
10
RS
ZERO
U/D
CL CARRY
T.G.
LATCH
MUX
4
4
4
4
T.G.
D2
10
RS
ZERO
U/D
CL CARRY
T.G.
LATCH
MUX
4
4
4
4
T.G.
D3
10
RS
ZERO
U/D
CL CARRY
T.G.
LATCH
MUX
4
4
4
4
T.G.
D1
10
RS
ZERO
U/D
CL CARRY
T.G.
LATCH
MUX
4
4
4
4
1
2
3
4
T.G.
4
4
D1
REG.
COMP.
4
1
2
3
4
1
2
3
4
1
2
3
4
4
4
T.G.
4
4
D2
REG.
COMP.
4
4
T.G.
4
4
D3
REG.
COMP.
4
4
T.G.
4
4
D4
REG.
COMP.
4
4
BDC
I/O
8
s
4
s
2
s
1
s
ZERO
UP/DN
COUNT
V
DD
V
SS
SEGMENT DECODER
SEGMENT DRIVERS
(7)
DIGIT DRIVERS
(4)
A
D4
D3
D2
D1
DISPLAY BLANK + OFF
G
B
C
D
E
F
MUX.
OSCILLATOR
MUX. I/O
AND
DISPLAY
CONTROL
LOGIC
4
4
DIGIT MUX
SCAN
DISPLAY
CONTROL
LOAD
REGISTER
LOAD
COUNTER
RESET
STORE
EQUAL
CARRY/BARROW
L.R.
L.C.
RESET
BCD I/O INPUTS
COM. ANODE: PULL DOWN
COM. CATHODE: PULL UP
V
DD
V
DD
V
DD
V
SS
V
DD
V
SS
V
DD
V
SS
ICM7217
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