mb91101 Fujitsu Microelectronics, Inc., mb91101 Datasheet - Page 74

• Manufacturer Part Number: mb91101
• Description: 32-bit Risc Microcontroller Cmos
• Manufacturer: Fujitsu Microelectronics, Inc.

74
MB91101/MB91101A
t
*: V
(4) Power on Supply Specifications (Power-on Reset)
C
Power supply rising time
Power supply shut off time
(clock cycle time): Refer to “(1) Clock Timing Rating.”
CC
< 0.2 V before the power supply rising
Parameter
Note:
V
Note: Set RST pin to “L” level when turning on the device, at least the described above duration after the
V
V
V
RST
t
RSTL
SS
CC
CC
CC
: Reset input time
supply voltage reaches Vcc is necessary before turning the RST to “H” level.
Sudden change in supply voltage during operation may initiate a power-on sequence.
To change supply voltage during operation, it is recommended to smoothly raise the voltage to avoid rapid
fluctuations in the supply voltage.
t
t
t
t
t
Symbol Pin name
R
R
R
R
OFF
0.2 V
Stabilizing time *
Regulator
42 ms approx.
0.9
V
V
V
V
V
(V
CC
CC
CC
CC
CC
t
R
CC
V
5 = V
CC
5
(V
CC
0.2
V
V
CC
3 = 2.7 V to 3.6 V, V
CC
CC
5 = 5.0 V 10%, V
Condition
= 5.0 V
= 3.0/3.3 V
V
t
CC
RSTL
*: Reset can’t be done during regulator stabilizing time.
—
5
+ (t
C
t
2
OFF
19
)
Min
SS
SS
50
50
A voltage rising rate of 50 mV/ms or
less is recommended.
—
—
1
= AV
= AV
Value
SS
SS
= 0.0 V, T
= 0.0 V, T
Max
30
18
—
—
—
A
A
Unit
= –40 C to +70 C)
= –40 C to +70 C)
ms
ms
ms
s
s
*
*
*
*
Repeated
operations
Remarks