M66258FP 데이터 시트보기 (PDF) - Renesas Electronics

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M66258FP

8192 × 8-Bit Line Memory

Renesas Electronics 

M66258FP

Variable Length Delay Bit

1 Line (8192 Bits) Delay

Input data can be written at the rising edge of WCK after write cycle and output data is read at the rising edge of RCK

before read cycle to easily make 1 line delay.

WCK

RCK

0 cycle 1 cycle 2 cycle

8192 cycle 8193 cycle 8194 cycle

8190 cycle 8191 cycle (0')

(1')

(2')

tRESS tRESH

WRES

RRES

tDS tDH

tDS tDH

Dn

(0)

(1)

(2)

(8189)

(8190)

(8191)

(0')

(1')

(2')

(3')

8192 cycle

tAC

tOH

Qn

(0)

(1)

(2)

(3)

WE, RE = "L"

n-bit Delay Bit

(Reset at cycles according to the delay length)

WCK

RCK

0 cycle 1 cycle 2 cycle

tRESS tRESH

WRES

RRES

tDS tDH

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

n − 2 cycle n − 1 cycle (0')

(1')

(2')

(3')

tRESS tRESH

tDS tDH

Dn

(0)

(1)

(2)

(n − 3)

(n − 2)

(n − 1)

(0')

(1')

(2')

(3')

m cycle

tAC

tOH

Qn

(0)

(1)

(2)

(3)

WE, RE = "L"

m≥3

REJ03F0252-0200 Rev.2.00 Sep 14, 2007

Page 9 of 13

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