CDP1823 데이터 시트보기 (PDF) - Intersil
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CDP1823 Datasheet PDF : 7 Pages
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CDP1823, CDP1823C
Dynamic Electrical Specifications At TA = -40 to +85oC, VDD ±5%, tR, tF = 20ns, CL = 100pF
LIMITS
CDP1823
CDP1823C
PARAMETER
SYMBOL
VDD (NOTE 2) (NOTE 1)
(NOTE 2) (NOTE 1)
(V)
MIN
TYP
MAX
MIN
TYP
MAX
Write Cycle (See Figure 2)
Write Recovery
tWR
5
75
-
-
75
-
-
10
50
-
-
-
-
-
Write Cycle
tWC
5
400
-
-
400
-
-
10
225
-
-
-
-
-
Write Pulse Width
tWRW
5
200
-
-
200
-
-
10
100
-
-
-
-
-
Address Setup Time
tAS
5
125
-
-
125
-
-
10
75
-
-
-
-
-
Data Setup Time
tDS
5
100
-
-
100
-
-
10
75
-
-
-
-
-
Data Hold Time From MWR
tDH
5
75
-
-
75
-
-
10
50
-
-
-
-
-
NOTES:
1. Typical values are at TA = 25oC and nominal voltage.
2. Time required by a limit device to allow for the indicated function.
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
tWC
tAS
ADDRESS
tWR
CS1, CS4
CS2, CS3, CS5
MWR
BUS 0-7
tWRW
tDS
tDH
VALID DATA
NOTE:
1. MRD must be high during write operation.
FIGURE 2. WRITE CYCLE TIMING DIAGRAM
6-28
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