M66220 查看數據表（PDF） - Mitsumi
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M66220 Datasheet PDF : 11 Pages
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MITSUBISHI 〈DIGITAL ASSP〉
M66220SP/FP
256 × 8-BIT MAIL-BOX
SWITCHING CHARACTERISTICS (Ta = 0 ~ 70°C, VCC = 5V±10%, unless otherwise noted)
Read cycle
Symbol
Parameter
Min.
tCR
Read cycle time
70
ta(A)
Address access time
ta(CS)
Chip select access time
ta(OE)
Output enable access time
tdis(CS)
Output disable time after CS (Note 5)
tdis(OE)
Output disable time after OE (Note 5)
ten(CS)
Output enable time after CS (Note 5)
5
ten(OE)
Output enable time after OE (Note 5)
5
tv(A)
Data effective time after Address
10
Limits
Typ.
Unit
Max.
ns
70
ns
70
ns
35
ns
35
ns
35
ns
ns
ns
ns
TIMING REQUIREMENTS (Ta = 0 ~ 70°C, VCC = 5V±10%, unless otherwise noted)
Write cycle
Symbol
Parameter
Min.
tCW
Write cycle time
70
tw(WE)
Write pulse width
45
tsu(A)
Address setup time
0
tsu(A-WEH)
Address setup time for rise of WE.
65
tsu(CS)
Chip select setup time (for WE)
65
tsu(D)
Data setup time
40
th(D)
Data hold time
0
trec(WE)
Write recovery time
0
tdis(WE)
Output disable time after WE (Note 5)
tdis(OE)
Output disable time after OE (Note 5)
ten(WE)
Output enable time after WE (Note 5)
0
Note 5: The time required for the output to change from a steady state to ±500mV under the load conditions shown in Fig 2.
This parameter is guaranteed but is not tested at shipment.
Limits
Typ.
Unit
Max.
ns
ns
ns
ns
ns
ns
ns
ns
35
ns
35
ns
ns
NOT READY TIMING (Ta = 0 ~ 70°C, VCC = 5V±10%, unless otherwise noted)
Symbol
tNAA
tNDA
tNAC
tNDC
tAPS
tNO
tNW
Parameter
Not Ready access time from Address
Not Ready disable time from Address
Not Ready access time from CS
Not Ready disable time from CS
Arbitration priority setup time
Data output access time from Not Ready.
Write hold time from Not Ready.
Limits
Unit
Min.
Typ.
Max.
50
ns
50
ns
50
ns
50
ns
15
ns
0
ns
65
ns
6
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