CDP1855 View Datasheet(PDF) - Intersil
Part Name
Description
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CDP1855 Datasheet PDF : 15 Pages
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CDP1855, CDP1855C
Dynamic Electrical Specifications At TA = -40 to +85oC, VDD ±5%, tR, tF = 20ns, VIH = 0.7VDD, VIL = 0.3VDD,
CL = 100pF (See Figure 9) (Continued)
LIMITS
CDP1855
CDP1855C
(NOTE 1)
PARAMETER
VDD
(V)
(NOTE 2)
MIN
TYP
MAX
(NOTE 2)
MIN
TYP
MAX
Strobe to Data Access
tSA
5
50
10
25
200
300
50
100
150
-
200
300
-
-
Minimum Strobe Width
tSW
5
-
10
-
150
225
-
75
115
-
150
225
-
-
NOTES:
1. Maximum limits of minimum characteristics are the values above which all devices function.
2. Typical values are for TA = 25oC and nominal voltages.
Timing Diagrams
tCLOCK
CLK
tCLK 1
SHIFT
(PRESCALER OFF)
C.O., YL, YR, ZL, ZR OUT
CIN, YL, YR, ZL, ZR IN
1
2
9
tCLK 0
1
2
9
tCSH
tPLH, tPHL
tSU
tH
FIGURE 7. OPERATION TIMING DIAGRAM
UNITS
ns
ns
ns
ns
CLEAR
CE
RD/WE
STB
DIN
tDSU
RA0-2
tASU
tCLR
* tWW
* WRITE IS OVERLAP OF CE = 1, RD/WE = 0, AND STB = 1.
tDH
tAH
FIGURE 8. WRITE TIMING DIAGRAM
4-60
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