Toshiba TC9457F - Manual (Page 10)

TC9457F
2002-10-21 10
Maximum Ratings (Ta = 25°C)
Characteristics Symbol Rating Unit
Power supply voltage V
DD
−0.3~6.0 V
Input voltage V
IN
−0.3~V
DD
+ 0.3 V
Power dissipation P
D
1400 mW
Operating temperature T
opr
−40~85 °C
Storage temperature T
stg
−65~150 °C
Electrical Characteristics (Ta = 25 ° C, V
DD
= MV
DD
= AV
DD
= DV
DD
= XV
DD
= 5 V,
2V
REF
= P2V
REF
= 4.2 V, V
REF
= PV
REF
= 2.1 V, unless otherwise specified)
MV
DD (CPU unit power supply)
Characteristics Symbol
Test
Circuit
Test Condition Min Typ. Max Unit
MV
DD1
―
When CPU and CD operating.
However,
MV
DD
≥ V
DD
(Note 5)
4.5 5.0 5.5
MV
DD2
―
When CPU operating
(CD powered off, 4.5 MHz
crystal connected)
(Note 5)
4.5 5.0 5.5 Operating supply voltage
MV
DD3
―
When CPU operating (CD
powered off, 75 kHz crystal
connected) (Note
5)
2.7 5.0 5.5
V
Memory retention voltage range MVHD ―
When crystal oscillator stopped
(CKSTP instruction executed)
(Note
5)
2.0 ~ 5.5 V
MV
DD1
―
When CPU operating
(XI = 16.9344 MHz crystal
connected)
― 1.0 2.0
MV
DD2
―
When CPU operating(MXI =
4.5 MHz crystal connected)
― 2.0 4.0
MV
DD3
―
When CPU operating (MXI =
75 kHz crystal connected)
― 0.75 2.0
Operating supply current
MV
DD4
―
Standby mode (only crystal
oscillating, 4.5 MHz or 75 kHz
crystal connected)
― 0.5 15
mA
Memory retention current MIHD ―
When crystal oscillator stopped
(CKSTP instruction executed)
― 0.1 1.0 µA
f MXT1 ―
Rf = 1 MΩ, Rout = 0 Ω,
Ci = Co = 30 pF
(Note 5, 6)
― 4.5 ― MHz
Crystal oscillation frequency
f MXT2 ―
Rf = 10 MΩ, Rout = 100 kΩ,
Ci = Co = 15 pF,
MV
DD
= 2.7~5.5 V (Note 5, 6)
― 75 ― kHz
Crystal oscillation start time tst ―
Crystal oscillation fmxt = 75
kHz
― ― 1.0 s
Note 5: Guaranteed at V DD = MV DD = 4.5 to 5.5 V and Ta = −40 to 85°C
Note 6: Consider the crystal resonator used in your system when determining constants, etc.