MB90F548GLSPF datasheet(49/70 Pages) CYPRESS

49 / 70 page

Document Number: 002- 07696 Rev. *A

Page 49 of 70

MB90540G/545G Series

11.4.5 Bus Timing (Read)

(MB90543G(S)/547G(S)/548G(S)/F548GL(S): VCC

 3.5 V to 5.5 V, V

 AV

 0.0 V, T

  40 C to  105 C)

(Other than MB90543G(S)/547G(S)/548G(S)/F548GL(S): VCC

 5.0 V  10, V

 AV

 0.0 V, T

  40 C to  105 C)

Parameter

Symbol

Pin name

Condition

Value

Units

Remarks

Min

Max

ALE pulse width

tLHLL

ALE



tCP/2

 20



Valid address

 ALE time

tAVLL

ALE,

A16 to A23,

AD00 to AD15

tCP/2

 20



ALE

  Address valid time

tLLAX

ALE, AD00 to

AD15

tCP/2

 15



Valid address

 RD time

tAVRL

A16 toA23,

AD00 to AD15,

tCP

 15



Valid address

 Valid data

input

tAVDV

A16 to A23,

AD00 to AD15



5 tCP/2

 60 ns

RD pulse width

tRLRH

3 tCP/2

 20 

  Valid data input

tRLDV

RD, AD00 to

AD15



3 tCP/2

 60 ns

  Data hold time

tRHDX

RD, AD00 to

AD15



  ALE time

tRHLH

RD, ALE

tCP/2

 15



  Address valid time

tRHAX

RD, A16 to A23

tCP/2

 10



Valid address

 CLK time

tAVCH

A16 to A23,

AD00 to AD15,

CLK

tCP/2

 20



  CLK time

tRLCH

RD, CLK

tCP/2

 20



ALE

  RD time

tLLRL

ALE, RD

tCP/2

 15



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