mb90f345caspfv Fujitsu Microelectronics, Inc., mb90f345caspfv Datasheet - Page 58

• Manufacturer Part Number: mb90f345caspfv
• Description: 16-bit Proprietary Microcontroller Cmos 2 F2mc-16lx Mb90340 Series
• Manufacturer: Fujitsu Microelectronics, Inc.

58
MB90340 Series
(3) Power On Reset
Power on rise time
Power off time
(4) Clock Output Timing
Cycle time
CLK
Parameter
Parameter
CLK
CLK
V
V
V
3 V
CC
SS
CC
Symbol
Symbol
t
t
t
CHCL
OFF
If you change the power supply voltage too rapidly, a power on reset may occur.
We recommend that you startup smoothly by restraining voltages when changing
the power supply voltage during operation, as shown in the figure below. Perform
while not using the PLL clock. However, if voltage drops are within 1 V/s, you can
operate while using the PLL clock.
CYC
t
R
0.2 V
CLK
CLK
Pin
V
V
Pin
CC
CC
(T
2.4 V
A
t
R
2.7 V
40 C to 105 C, V
t
CHCL
(T
Condition
Condition
A
Holds RAM data
40 C to 105 C, V
t
CYC
0.8 V
41.76
0.05
62.5
Min
Min
20
13
1
Value
Value
CC
0.2 V
Max
Max
5.0 V
30
CC
t
OFF
2.4 V
We recommend a rise of
50 mV/ms maximum.
5.0 V
10 , f
Unit
Unit
ms
ms
ns
ns
ns
ns
0.2 V
CP
Due to repetitive operation
f
f
f
f
10 , V
CP
CP
CP
CP
24 MHz, V
16 MHz
24 MHz
16 MHz
24 MHz
SS
Remarks
Remarks
0.0 V, f
SS
AV
CP
SS
24 MHz)
0.0 V)