MT8920B CMOS
AC Electrical Characteristics† - ST-BUS Timing (see Figure 20)
(V = 5.0V ± 5%, T = -40 to 85°C)
CC
A
‡
Characteristics
Sym
Min
Typ
Max
Units
Test Conditions
1
2
3
4
5
6
7
8
9
Clock C4i Period
t
244
122
122
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
CLK
Clock C4i Period High
Clock C4i Period Low
C4i Rise Time
t
70
70
CH
t
CL
t
20
12
R
C4i Fall Time
t
F
Frame Pulse Setup Time
Frame Pulse Hold Time
STo0/1 Delay from C4i
STi0 Setup Time
t
20
20
FPS
FPH
SOD
t
t
100
Load B
t
20
35
STS
10 STi0 Hold Time
t
STH
† Timing is over recommended temperature & power supply voltages.
‡ Typical figures are at 25°C, V =5V and are for design aid only: not guaranteed and not subject to production testing.
DD
Bit Cell
t
CL
C4i
F0i
t
CLK
t
CH
t
t
F
R
t
t
FPS
FPH
t
SOD
STo0
STo1
t
t
STH
STS
STi0
Figure 20 - ST-BUS Timing Diagram
3-24
MITEL [ MITEL NETWORKS CORPORATION ]
