6.42

71V321L

High Speed 3.3V 2K x 8 Dual-Port Static RAM with Interrupts

Industrial and Commercial Temperature Ranges

11

AC Electrical Characteristics Over the

Operating Temperature and Supply Voltage Range(1)

NOTES:

1. 'X' in part numbers indicates power rating (S or L).

71V321X25

Com'l & Ind

71V321X35

Com'l & Ind

71V321X55

Com'l & Ind

Symbol

Parameter

Min.

Max.

Min.

Max.

Min.

Max.

Unit

INTERRUPT TIMING

tAS

Address Set-up Time

0

____

0

____

0

____

ns

tWR

Write Recovery Time

0

____

0

____

0

____

ns

tINS

Interrupt Set Time

____

25

____

25

____

45

ns

tINR

Interrupt Reset Time

____

25

____

25

____

45

ns

3026 tbl 12

TimingWaveformof InterruptMode(1)

SET INT

CLEAR INT

NOTES:.

1. All timing is the same for left and right ports. Port “A” may be either left or right port. Port “B” is the opposite from port “A”.

2. See Interrupt Truth Table.

3. Timing depends on which enable signal (CE or R/W) is asserted last.

4. Timing depends on which enable signal (CE or R/W) is de-asserted first.

tINS

ADDR"A"

INT"B"

INTERRUPT ADDRESS

tWC

tAS

R/

W"A"

tWR

3026 drw 14

(3)

(3)

(2)

(4)

tRC

INTERRUPT CLEAR ADDRESS

ADDR"B"

OE"B"

tINR

INT"B"

3026 drw 15

tAS(3)

(3)

(2)

,