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MB90360E Series
43
4.
AC Characteristics
(1) Clock Timing
(TA
= 40 °C to +125 °C, VCC = 5.0 V ± 10%, fCP ≤ 24 MHz, VSS = AVSS = 0 V)
Parameter
Symbol
Pin
Value
Unit
Remarks
Min
Typ
Max
Clock frequency
fC
X0, X1
3
16
MHz
1/2 when PLL stops,
When using an oscillation circuit
4
16
MHz
PLL
× 1,
When using an oscillation circuit
4
12
MHz
PLL
× 2,
When using an oscillation circuit
4
8MHz
PLL
× 3,
When using an oscillation circuit
4
6MHz
PLL
× 4,
When using an oscillation circuit
4
4MHz
PLL
× 6,
When using an oscillation circuit
X0, X1
3
24
MHz
1/2 when PLL stops,
When using an external clock
4
24
MHz
PLL
× 1,
When using an external clock
4
12
MHz
PLL
× 2,
When using an external clock
4
8MHz
PLL
× 3,
When using an external clock
4
6MHz
PLL
× 4,
When using an external clock
4
4MHz
PLL
× 6,
When using an external clock
fCL
X0A, X1A
—
32.768
100
kHz
Clock cycle time
tCYL
X0, X1
62.5
333
ns
When using an oscillation circuit
X0, X1
41.67
333
ns
When using an external clock
tCYLL
X0A, X1A
10
30.5
—
μs
Input clock pulse width
PWH, PWL
X0
10
ns
Duty ratio is about 30
% to 70%.
PWHL, PWLL
X0A
5
15.2
μs
Input clock rise and fall
time
tCR, tCF
X0
5
ns
When using external clock
Internal operating clock
frequency (machine
clock)
fCP
1.5
24
MHz When using main clock
fCPL
8.192
50
kHz
When using sub clock
Internal operating clock
cycle time (machine clock)
tCP
41.67
666
ns
When using main clock
tCPL
20
122.1
μs
When using sub clock