MT8920B-1 查看數據表（PDF） - Mitel Networks
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MT8920B-1 Datasheet PDF : 29 Pages
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MT8920B CMOS
AC Electrical Characteristics† - Mode 2 Parallel Bus Timing - (see Figures 15 and 16)
(VCC=5.0V ±5%,TA=-40 to 85°C)
Characteristics
Sym Min Typ‡ Max Units
Test Conditions
1 OE Low to Valid Data
tEVD
60
ns Load A, CL=130pF, RL=740Ω
2 Address Access Time
tAA
120
ns Load A, CL=130pF, RL= 740Ω
3 CS Low to Valid Data
tCSD
60
ns Load A, CL=130pF, RL=740Ω
4 Output Disable
tOHZ
50
ns Load A, CL=130pF, RL=740Ω
5 Address Setup Time
tASF
20
ns
6 Data Setup Time
tDST
30
ns
7 Data Hold Time
tDHT
5
ns
8 Address Hold Time
tAH
50
ns
9 Write Pulse Width
tWP
50
ns
10 OE, R/W High to C4i High
tEC4H
-10
ns
11 OE, R/W Low to C4i Low
tEC4L
10
ns
12 C4i High to Busy Low
tC4BL
50
ns Load C
13 C4i Low to Busy High
tC4BH
50
ns Load C
14 OE, R/W High to Busy Low
tEBL
40
ns Load C
† Timing is over recommended temperature & power supply voltages.
‡ Typical figures are at 25°C, VDD=5V, tCLK=244 ns, tCH=tCL=122 ns and are for design aid only: not guaranteed and not subject to production
testing.
A0 - A5
CS
OE
R/W
D0 - D7
3-20
tEVD
tCSD
tAA
tAH
tASF
tOHZ
DATA OUT
tWP
tDST
tDHT
DATA IN
Figure 15 - Mode 2 Timing Diagram (No Contention)
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