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Rainbow Electronics W90N740 User Manual

Page 202

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W90N740

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8.3.3 EBI/(ROM/SRAM/External I/O) AC Characteristics

Address Valid

R Data

Write Data Vaild

MCLK

T

DO

nECS[3:0]

A[24:0]

nOE

D[31:0]

nWAIT

nWBE[3:0]

D[31:0]

T

NECSO

T

NECSO

T

ADDO

T

NOEO

T

NOEO

T

DSU

T

DH

T

NWAH

T

NWBO

T

NWBO

T

NWASU

SYMBOL DESCRIPTION MIN.

MAX.

UNIT

T

ADDO

Address Output Delay Time

2

7

nS

T

NCSO

ROM/SRAM/Flash or External I/O Chip Select Delay Time

2

7

nS

T

NOEO

ROM/SRAM or External I/O Bank Output Enable Delay

2

7

nS

T

NWBO

ROM/SRAM or External I/O Bank Write Byte Enable Delay

2

7

nS

T

DH

Read Data Hold Time

7

nS

T

DSU

Read Data Setup Time

0

nS

T

DO

Write Data Output Delay Time (SRAM or External I/O)

2

7

nS

T

NWASU

External Wait Setup Time

3

nS

T

NWAH

External Wait Hold Time

1

nS