MT89L85AN データシートの表示（PDF） - Mitel Networks
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MT89L85AN Datasheet PDF : 20 Pages
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MT89L85
Advance Information
AC Electrical Characteristics† - ST-BUS Timing
Voltages are with respect to ground (VSS) unless otherwise stated.
Characteristics
Sym Min Typ‡
Max
Units
Test Conditions
1 Frame Pulse width
tF0iW
244
ns
2 Frame Pulse setup time
tF0iS
10
190
ns
3 Frame Pulse hold time
tF0iH
20
190
ns
4 STo delay Active to Active
tSAA
55
ns CL=150 pF
5 STi setup time
tSTiS
20
ns
6 STi hold time
7 Clock period
tSTiH
20
ns
tC4i
200 244 300
ns
8 CK Input Low
9 CK Input High
tCL
85 122 150
ns
tCH
85 122 150
ns
10 Clock Rise/Fall Time
tr,tf
10
ns
†
‡
Timing
Typical
is over
figures
recommended temperature & power supply
are at 25°C and are for design aid only: not
voltages (VDD=5V±5%, VSS=0V, TA=–40 to 85°C).
guaranteed and not subject to production testing.
F0i VHM
VLM
C4i VHM
VLM
STo VHM
VLM
STi VHM
VLM
tF0iW
tF0iH
tC4i
tCH
tCL
tF0iS
Ch. 31
Bit 0
tDAA
Ch. 31
Bit 0
Ch. 0
Bit 7
tSTiS
tSTiH
Ch. 0
Bit 7
tf
tr
Ch. 0
Bit 6
Ch. 0
Bit 6
Ch. 0
Bit 5
Ch. 0
Bit 5
Figure 12 - ST-BUS Timing
14
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