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MB90378 Datasheet(PDF) 42 Page - Fujitsu Component Limited.

Part No. MB90378
Description  16-bit Proprietary Microcontroller
Download  65 Pages
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Maker  FUJITSU [Fujitsu Component Limited.]
Homepage  http://edevice.fujitsu.com/fmd/en/index.html
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MB90378 Datasheet(HTML) 42 Page - Fujitsu Component Limited.

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MB90378 Series
42
4.
AC Characteristics
(1) Clock Timings
(VCC
= 2.7 V to 3.6 V, AVCC = 2.7 V to 3.6 V, VSS = AVSS = 0.0 V, TA = −40 °C to +85 °C)
Parameter
Symbol Pin name Condition
Value
Unit
Remarks
Min
Typ
Max
Clock frequency
fCH
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
10
MHz
PLL
× 2 When using an
oscillation circuit
4
6.67
MHz
PLL
× 3 When using an
oscillation circuit
4
5MHz
PLL
× 4 When using an
oscillation circuit
3
32
MHz
× 1/2 (When PLL stops)
When using an external
clock
4
20
MHz
PLL
× 1 When using an
external clock
4
10
MHz
PLL
× 2 When using an
external clock
4
6.67
MHz
PLL
× 3 When using an
external clock
4
5MHz
PLL
× 4 When using an
external clock
fCL
X0A, X1A
⎯⎯
32.768
kHz
Clock cycle time
tHCYL
X0, X1
31.25
333
ns
tLCYL
X0A, X1A
⎯⎯
30.5
⎯µs
Frequency
fluctuation rate
locked*
∆f
⎯⎯
5%
Input clock pulse
width
PWH
PWL
X0
5
⎯⎯
ns
Recommend duty
ratio of 30% to 70%
PWHL
PWLL
X0A
⎯⎯
15.2
⎯µs
Recommend duty
ratio of 30% to 70%
Input clock rise/fall
time
tCR
tCF
X0
⎯⎯
5ns
External clock
operation
Internal operating
clock frequency
fCP
⎯⎯
1.5
20
MHz Main clock operation
fLCP
⎯⎯
8.192
kHz Sub-clock operation
Internal operating
clock cycle time
tCP
⎯⎯
50
666
ns
Main clock operation
tLCP
⎯⎯
122.1
⎯µs Sub-clock operation


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