AS7C4098-12 datasheet(4/10 Pages) ALSC

Part #	AS7C4098-12

Description	5V/3.3V 256K x 16 CMOS SRAM

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Manufacturer	ALSC [Alliance Semiconductor Corporation]

Direct Link	https://www.alliancememory.com

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4 / 10 page

®

AS7C4098

AS7C34098

1/13/05; v.1.9

Alliance Semiconductor

P. 4 of 10

Key to switching waveforms

Read waveform 1 (address controlled)6,7,9

Read cycle (over the operating range)3,9

Parameter

Symbol

–10

–12

–15

–20

Unit Notes

Min

Max

Min Max Min Max Min Max

Read cycle time

tRC

10

–

12

–

15

–

20

–

ns

Address access time

tAA

–

10

–

12

–

15

–

20

ns

Chip enable (CE) access time

tACE

–

10

–

12

–

15

–

20

ns

Output enable (OE) access time

tOE

–

5

–6–7–8

ns

Output hold from address change

tOH

3

–

3–3–3–

ns

5

CE Low to output in low Z

tCLZ

0

–

3–0–0–

ns

4, 5

CE High to output in higfch Z

tCHZ

–

5

–6–7–9

ns

4, 5

OE Low to output in low Z

tOLZ

0

–

0–0–0–

ns

4, 5

OE High to output in high Z

tOHZ

–

5

–6–7–9

ns

4, 5

LB, UB access time

tBA

–

5

–6–7–8

ns

LB, UB Low to output in low Z

tBLZ

0

–

0–0–0–

ns

LB, UB High to output in high Z

tBHZ

–

5

–6–7–9

ns

Power up time

tPU

0

–

0–0–0–

ns

5

Power down time

tPD

–

10

–

12

–

15

–

20

ns

5

Undefined/don’t care

Falling input

Rising input

tOH

tAA

tRC

tOH

DataOUT

Address

Data valid

Previous data valid

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AS7C4098-12 Datasheet(PDF) 4 Page - Alliance Semiconductor Corporation

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