M66258FP データシートの表示（PDF） - MITSUBISHI ELECTRIC

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M66258FP

8192 x 8-BIT LINE MEMORY

MITSUBISHI ELECTRIC  

MITSUBISHI <DIGITAL ASSP>

M66258FP

8192 x 8-BIT LINE MEMORY

• n-bit delay 2

(Slides input timings of WRES and RRES at cycles according to the delay length.)

0 cycle 1 cycle

WCK

RCK

tRESS tRESH

WRES

2 cycle n-2 cycle n-1 cycle n cycle n+1 cycle n+2 cycle n+3 cycle

RRES

Dn

tDS tDH

(0)

(1)

tRESS tRESH

tDS tDH

(2)

(n-2)

(n-1)

(n)

(n+1)

(n+2)

(n+3)

m cycle

tAC

tOH

Qn

(0)

(1)

(2)

(3)

WE, RE = "L"

• n-bit delay 3

(Slides address by disabling RE in the period according to the delay length.)

0 cycle 1 cycle 2 cycle

WCK

RCK

WRES

RRES

tRESS tRESH

RE

tDS tDH

Dn

(0)

(1)

(2)

n-1 cycle n cycle n+1 cycle n+2 cycle n+3 cycle

tNREH tRES

(n-2)

(n-1)

tDS tDH

(n)

(n+1)

(n+2)

(n+3)

Qn

HIGH-Z

m cycle

tAC

tOH

(0)

(1)

(2)

(3)

WE, RE = "L"

m≥3

10

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