M66221FP データシートの表示（PDF） - MITSUBISHI ELECTRIC
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M66221FP Datasheet PDF : 11 Pages
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MITSUBISHI 〈DIGITAL ASSP〉
M66221SP/FP
256 × 9-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)
∗
tNAA
tNDA
Not Ready B
(Not Ready A)
WEB
(WEA)
I/O0B~I/O8B
(I/O0A~I/O8A)
(DIN)
I/O0B~I/O8B
(I/O0A~I/O8A)
(DOUT)
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/O8B
(I/O0A~I/O8A)
(DIN)
I/O0B~I/O8B
(I/O0A~I/O8A)
(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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