
MB90960 Series
32
4.
AC Characteristics
(1) Clock Timing
(T
A
=
40
°
C to
+
125
°
C*, V
CC
=
5.0 V
±
10
%
, f
CP
≤
24 MHz, V
SS
=
AV
SS
=
0 V)
Value
*: If used exceeding T
A
=
+
105
°
C, please contact Fujitsu for reliability limitations.
Parameter
Symbol
Pin
Unit
Remarks
Min
Typ
Max
Clock frequency
f
C
X0, X1
3
16
MHz
1/2 when PLL stops,
When using an oscillation circuit
PLL
×
1,
When using an oscillation circuit
PLL
×
2,
When using an oscillation circuit
PLL
×
3,
When using an oscillation circuit
PLL
×
4,
When using an oscillation circuit
PLL
×
6,
When using an oscillation circuit
4
16
4
12
4
8
4
6
4
4
X0, X1
3
24
MHz
1/2 when PLL stops,
When using an external clock
PLL
×
1,
When using an external clock
PLL
×
2,
When using an external clock
PLL
×
3,
When using an external clock
PLL
×
4,
When using an external clock
PLL
×
6,
When using an external clock
4
20
4
12
4
8
4
6
4
4
f
CL
X0A, X1A
62.5
32.768
30.5
15.2
100
kHz
Clock cycle time
t
CYL
X0, X1
333
ns
When using an oscillation circuit
X0, X1
41.67
333
ns
μ
s
ns
μ
s
When using an external clock
t
CYLL
X0A, X1A
10
When using sub clock
Input clock pulse width
P
WH
, P
WL
X0
10
Duty ratio is about 30
%
to 70
%
.
P
WHL
, P
WLL
X0A
5
Input clock rise and fall
time
t
CR
, t
CF
X0
5
ns
When using external clock
Internal operating clock
frequency (machine clock)
f
CP
1.5
41.67
24
MHz When using main clock
f
CPL
8.192
122.1
50
kHz
When using sub clock
Internal operating clock
cycle time (machine clock)
t
CP
666
ns
μ
s
When using main clock
t
CPL
20
When using sub clock