M66220 데이터 시트보기 (PDF) - Mitsumi

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M66220

256 × 8-BIT MAIL-BOX

Mitsumi 

MITSUBISHI 〈DIGITAL ASSP〉

M66220SP/FP

256 × 8-BIT MAIL-BOX

Contention Write Cycle

Contention write cycle No.1 (WE control) See Notes 6, 8, 10 and 11.

Address A

(Address B)

∗ Address matching

tAPS

Address B

(Address A)

Not Ready B

(Not Ready A)

WEB

(WEA)

I/O0B~I/O7B

(I/O0A~I/O7A)

(DIN)

I/O0B~I/O7B

(I/O0A~I/O7A)

(DOUT)

∗

tNAA

tNDA

tsu(A)

tNW

tsu(A-WEH)

tw(WE)

tdis(WE)

tsu(D)

th(D)

Data input determined

ten(WE)

∗ Address A = Address B

Contention write cycle No.2 (CS control) See Notes 6, 8, 10 and 12.

Addresses

A&B

∗ Address matching

CSA

(CSB)

CSB

(CSA)

Not Ready B

(Not Ready A)

WEB

(WEA)

I/O0B~I/O7B

(I/O0A~I/O7A)

(DIN)

I/O0B~I/O7B

(I/O0A~I/O7A)

(DOUT)

tAPS

tNAC

tNDC

tNW

tsu(CS)

tw(WE)

ten(CS)

tdis(WE)

tsu(D)

th(D)

Data input determined

ten(WE)

∗ Address A = Address B

10

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