CDP1822 Просмотр технического описания (PDF) - Intersil
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CDP1822 Datasheet PDF : 8 Pages
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CDP1822, CDP1822C
A0 - A7
CHIP-SELECT 1
tRC
tDOA1
tDOH1
CHIP-SELECT 2
OUTPUT DISABLE
tDOA2
tDOA3
tDOH2
tDOH3
READ/WRITE
tAA
DATA OUT
HIGH
IMPEDANCE
DATA OUT
VALID
HIGH
IMPEDANCE
FIGURE 1. READ CYCLE TIMING WAVEFORMS
Dynamic Electrical Specifications At TA + -40 to +85oC, VDD ±5%, Input tR, tF = 20ns, VIH = 0.7 VDD, VIL = 0.3 VDD,
CL = 100 pF.
TEST
CONDITIONS
CD1822
LIMITS
CDP1822C
PARAMETER
VDD
(V)
(NOTE 1) (NOTE 2)
(NOTE 1) (NOTE 2)
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
Read Cycle Times (Figure 2)
Write Cycle
tWC
5
500
-
-
500
-
-
ns
10
300
-
-
-
-
-
ns
Address Setup
tAS
5
200
-
-
200
-
-
ns
10
110
-
-
-
-
-
ns
Write Recovery
tWR
5
50
-
-
50
-
-
ns
10
40
-
-
-
-
-
ns
Write Width
tWRW
5
250
-
-
250
-
-
ns
10
150
-
-
-
-
-
ns
Input Data Setup Time
tDS
5
250
-
-
250
-
-
ns
10
150
-
-
-
-
-
ns
Data Hold
tDH
5
50
-
-
50
-
-
ns
10
40
-
-
-
-
-
ns
Chip-Select 1 Setup
tCS1S
5
200
-
-
200
-
-
ns
10
110
-
-
-
-
-
ns
Chip-Select 2 Setup
tCS2S
5
200
-
-
200
-
-
ns
10
110
-
-
-
-
-
ns
6-14
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