AS7C4098A datasheet(4/11 Pages) ALSC

4 / 11 page

AS7C4098A

2/21/06, v 1.2

Alliance Semiconductor

P. 4 of 11

Key to switching waveforms

Read waveform 1 (address controlled)5,6,8

Read cycle (over the operating range)2,8

Parameter

Symbol

–10

–12

–15

–20

Unit Notes

Min

Max

Min Max Min Max Min Max

Read cycle time

tRC

–

12–15–20–

Address access time

tAA

–

12–15–20

Chip enable (CE) access time

tACE

–

12–15–20

Output enable (OE) access time

tOE

–

–6–6–6

Output hold from address change

tOH

–

3–3–3–

CE Low to output in low Z

tCLZ

–

3–3–3–

3, 4

CE High to output in high Z

tCHZ

–

–6–7–9

3, 4

OE Low to output in low Z

tOLZ

–

0–0–0–

3, 4

OE High to output in high Z

tOHZ

–

–6–7–9

3, 4

LB, UB access time

tBA

–

–6–7–8

LB, UB Low to output in low Z

tBLZ

–

0–0–0–

LB, UB High to output in high Z

tBHZ

–

–6–7–9

Power up time

tPU

–

0–0–0–

Power down time

tPD

–

12–15–20

Undefined/don’t care

Falling input

Rising input

tOH

tAA

tRC

tOH

DataOUT

Address

Data valid

Previous data valid

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