ml675050 Oki Semiconductor, ml675050 Datasheet - Page 33

• Manufacturer Part Number: ml675050
• Description: Arm7tdmi Based Micro-controller For Ic Card Reader/writer
• Manufacturer: Oki Semiconductor

ELECTRICAL CHARACTERISTICS (AC CHARACTERISTICS)
(1) Restriction on the Order of Applying Power
(2) Restriction on the Order of Applying Power
(3) Current Rise/Fall Time
OKI Semiconductor
[Caution]
There is no specification for rise and fall of input and output signals; however, avoid waveforms containing
ripples.
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Parameter
Power supply voltage rise time
(COREVDD, PLLVDD, VBATVDD)
Power supply voltage rise time
(IOVDD, AVDD)
Power supply voltage fall time
(COREVDD, PLLVDD, VBATVDD)
Power supply voltage fall time
(IOVDD, AVDD)
The IOVDD power supply can be turned on 100ms before turning on the VBATVDD power supply.
There is no restriction on the order of turning on powers for COREVDD, VBATVDD, IOVDD, power
for A/D and power for PLL, except the above restriction on IOVDD and VBATVDD.
After the VBATVDD power supply is turned on, turn on each power supply ( powers for COREVDD,
VBATVDD, IOVDD, power for A/D and power for PLL ) within one second.
After the IOVDD power supply is turned on, the pin state is undefined till COREVDD power supply is
turned on.
Turn off the 3V power supplies, IOVDD and AVDD, first.
There are no restrictions on the sequence of turning off power supplies, IOVDD and AVDD and on the
sequence of turning off the other power supplies.
VBATVDD Power-IOVDD Power Apply timimg
IO V D D p o w e r s u p p ly
V B A T V D D p o w e r s u p p ly
Symbol
t
t
t
t
RV1
RV2
FV1
FV2
T im in g th a t c a n b e tu rn e d o n p o w e r s u p p ly
1 0 0 m s
Condition
0 1.35 V
0 2.7 V
1.35 0 V
2.7
0 V
(m a x )
Min.
—
—
—
—
Typ.
—
—
—
—
Max.
100
100
100
100
FEDL675050-02
ML675050
Unit
ms
ms
ms
ms
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