MITSUBISHI

〈DIGITAL ASSP〉

M66220SP/FP

256

× 8-BIT MAIL-BOX

6

Read cycle

Symbol

Parameter

Read cycle time

Address access time

Chip select access time

Output enable access time

Output disable time after CS (Note 5)

Output disable time after OE (Note 5)

Output enable time after CS (Note 5)

Output enable time after OE (Note 5)

Data effective time after Address

Limits

Unit

ns

ns

ns

ns

ns

ns

ns

ns

ns

Typ.

Max.

70

70

35

35

35

Min.

70

5

5

10

Write cycle

Symbol

Parameter

Write cycle time

Write pulse width

Address setup time

Address setup time for rise of WE.

Chip select setup time (for WE)

Data setup time

Data hold time

Write recovery time

Output disable time after WE (Note 5)

Output disable time after OE (Note 5)

Output enable time after WE (Note 5)

Limits

Unit

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

Typ.

Max.

35

35

Min.

70

45

0

65

65

40

0

0

0

Note 5: The time required for the output to change from a steady state to

±500mV under the load conditions shown in Fig 2.

This parameter is guaranteed but is not tested at shipment.

Symbol

Parameter

Not Ready access time from Address

Not Ready disable time from Address

Not Ready access time from CS

Not Ready disable time from CS

Arbitration priority setup time

Data output access time from Not Ready.

Write hold time from Not Ready.

Limits

Unit

ns

ns

ns

ns

ns

ns

ns

Typ.

Max.

50

50

50

50

0

Min.

15

65