參數(shù)資料
型號(hào): CDP1872CE
廠商: HARRIS SEMICONDUCTOR
元件分類: 微控制器/微處理器
英文描述: High-Speed 8-Bit Input and Output Ports
中文描述: 8 I/O, PIA-GENERAL PURPOSE, PDIP22
文件頁(yè)數(shù): 4/6頁(yè)
文件大小: 32K
代理商: CDP1872CE
4-79
Dynamic Electrical Specifications
At T
A
= 25
o
C, V
DD
5V, t
R
, t
F
= 10ns, V
IH
= 0.7V
DD
, V
IL
= 0.3V
DD
, C
L
= 150pF
PARAMETER
LIMITS
UNITS
CDP1875C
MIN
(NOTE 1)
TYP
(NOTE 2)
MAX
OUTPUT PORT (FIGURE 5)
Clock to Data Out
t
CLO
-
50
100
ns
Clear to Output
t
CRO
-
80
160
ns
Data In to Data Out
t
DIO
-
50
85
ns
Minimum Data Setup Time
t
DS
-
10
30
ns
Data Hold Time
t
DH
-
10
30
ns
Minimum Clear Pulse Width
t
CR
-
30
60
ns
NOTES:
1. Typical values are for T
A
= +25
o
C and V
DD
±
5%.
2. Maximum values are for T
A
= +85
o
C and V
DD
±
5%
FIGURE 5. TIMING WAVEFORMS FOR CDP1875C (OUTPUT PORT)
t
CL
t
DIS
t
CRO
t
CR
t
DIO
t
DH
t
DSU
t
EN
CSI
CS2
(CDP1872C)
CSI
CS2
(CDP1874C)
CLOCK
DATA IN
DATA BUS
(HIGH Z)
CLR
t
CLO
FIGURE 4. TIMING WAVEFORMS FOR CDP1872C AND CDP1874C (INPUT-PORT TYPES)
t
CRO
t
CR
t
DIO
t
DH
t
DS
t
CLO
CSI
CS2
CS3 = CLOCK
DATA IN
CLR
DATA OUT
CDP1872C, CDP1874C, CDP1875C
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PDF描述
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