6-28

PARAMETER

SYMBOL

(V)

LIMITS

CDP1823

CDP1823C

UNITS

(NOTE 2)

MIN

(NOTE 1)

TYP

MAX

(NOTE 2)

MIN

(NOTE 1)

TYP

MAX

Write Cycle (See Figure 2)

Write Recovery

5

75-

-75-

-

ns

10

50

-----

ns

Write Cycle

5

400

-

-

400

-

-

ns

10

225

-----

ns

Write Pulse Width

5

200

-

-

200

-

-

ns

10

100

-----

ns

Address Setup Time

5

125

-

-

125

-

-

ns

10

75

-----

ns

Data Setup Time

5

100

-

-

100

-

-

ns

10

75

-----

ns

Data Hold Time From MWR

5

75-

-75-

-

ns

10

50

-----

ns

NOTES:

2. Time required by a limit device to allow for the indicated function.

ADDRESS

CS1, CS4

CS2, CS3, CS5

MWR

BUS 0-7

VALID DATA

NOTE:

1. MRD must be high during write operation.

FIGURE 2. WRITE CYCLE TIMING DIAGRAM

CDP1823, CDP1823C