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參數(shù)資料
| 型號： | CDP1871AD |
| 廠商： | HARRIS SEMICONDUCTOR |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | CMOS Keyboard Encoder |
| 中文描述： | SPECIALTY MICROPROCESSOR CIRCUIT, CDIP40 |
| 文件頁數(shù)： | 2/10頁 |
| 文件大?。?/td> | 56K |
| 代理商： | CDP1871AD |
4-67
CDP1871A, CDP1871AC
FIGURE 1. TYPICAL CDP1800 SERIES MICROPROCESSOR SYSTEM USING THE CDP1871A
FIGURE 2. CDP1871A BLOCK DIAGRAM
0.1
μ
F
36
V
DD
100K
40
DEBOUNCE
CS1,
CS2,
CS3
CS4
TPB
SHIFT
23
24
21
34
CONTROL
ALPHA
39
CONTROL
SHIFT
38
BUS0-BUS7
CONTROL
MRD
D11
D1
ALPHA LOCK
NORMAL
V
DD
TPB
N0-N2
37
BUS0-BUS7
CDP1800-SERIES
CPU
CDP1871A
S1
S2
S3
S4
S5
S6
S7
S8
12
13
14
15
16
17
18
19
8 BIT DATA BUS
11
UP TO 11 SETS
OF 8 SWITCHES EACH
1
32
25
CS1
CS2
CS3
21
22
23
24
34
CS4
TPB
CS
CONTROL
LOGIC
KEY
DETECT
F/F
36
DEBOUNCE
C
X
R
X
V
DD
R
N
33
DA
35
RPT
STATUS
LATCHES
KEY DOWN
DETECT
1 OF 8
MUX
R
PD
R
PD
FROM
KEY BOARD
12
19
SENSE
LINES
1
DI
11
DII
TO
KEY BOARD
DRIVE
LINES
37
ALPHA
DECII
DRIVERS
LATCH
39
SHIFT
38
CONTROL
R
PD
R
PD
THREE-STAGE
SCAN COUNTER
FIVE-STAGE
SCAN COUNTER
C1-C3
C4-C8
THREE-STATE
OUTPUT
BUFFERS
BUS ENABLE
25
32
BUS 0
BUS 7
40
20
V
DD
V
SS
SCAN CLOCK
相關PDF資料 |
PDF描述 |
|---|---|
| CDP1871AE | CMOS Keyboard Encoder |
| CDP1874C | High-Speed 8-Bit Input and Output Ports(高速8位并行I/O端口) |
| CDP1872 | High-Speed 8-Bit Input and Output Ports |
| CDP1872C | High-Speed 8-Bit Input and Output Ports |
| CDP1872CE | High-Speed 8-Bit Input and Output Ports |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| CDP1871AE | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:CMOS Keyboard Encoder |
| CDP1872 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:High-Speed 8-Bit Input and Output Ports |
| CDP1872C | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:High-Speed 8-Bit Input and Output Ports |
| CDP1872CD | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Harris Corporation 功能描述: |
| CDP1872CE | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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