mc9s08lg32 Freescale Semiconductor, Inc, mc9s08lg32 Datasheet - Page 11

• Manufacturer Part Number: mc9s08lg32
• Description: 8-bit Hcs08 Central Processor Unit
• Manufacturer: Freescale Semiconductor, Inc

2.4
This section provides information about operating temperature range, power dissipation, and package thermal resistance. Power
dissipation on I/O pins is usually small compared to the power dissipation in on-chip logic and voltage regulator circuits, and
it is user-determined rather than being controlled by the MCU design. To take P
the difference between actual pin voltage and V
unusually high pin current (heavy loads), the difference between pin voltage and V
The average chip-junction temperature (T
Freescale Semiconductor
Thermal Characteristics
1
2
3
Supply voltage
Maximum current into V
Digital input voltage
Instantaneous maximum current
Storage temperature range
current-limiting resistor, calculate resistance values for positive (V
voltages and use the largest of the two resistance values.
All functional non-supply pins are internally clamped to V
Power supply must maintain regulation within operating V
operating maximum current conditions. If positive injection current (V
I
out of regulation. Ensure that the external V
injection current, this will be of greater risk when the MCU is not consuming power. For instance,
If no system clock is present, or if the clock rate is very low (which would reduce overall power
consumption).
Input must be current limited to the value specified. To determine the value of the required
DD
Single pin limit (applies to all port pins)
, the injection current may flow out of V
Operating temperature range
(packaged)
Maximum junction temperature
Thermal resistance
Thermal resistance
Four-layer board
Single-layer board
80-pin LQFP
64-pin LQFP
48-pin LQFP
80-pin LQFP
64-pin LQFP
48-pin LQFP
Rating
Rating
DD
Table 4. Absolute Maximum Ratings
J
MC9S08LG32 Series Data Sheet, Rev. 4
Preliminary - Subject to Change Without Notice
) in °C can be obtained from:
Table 5. Thermal Characteristics
SS
T
J
or V
= T
A
DD
+ (P
1, 2, 3
DD
and multiply by the pin current for each I/O pin. Except in cases of
DD
and could result in an external power supply going
D
Symbol
× θ
load will shunt current greater than maximum
θ
θ
T
T
JA
JA
JA
A
J
)
Symbol
V
T
I
V
DD
I
DD
stg
D
SS
In
DD
and V
range during instantaneous and
I/O
–40 to +105
into account in power calculations, determine
DD
T
Value
–0.3 to V
DD
SS
L
125
) and negative (V
61
71
80
48
52
56
to T
.
–0.3 to +5.8
In
or V
–55 to 150
> V
Value
H
120
±25
±2
DD
DD
DD
will be very small.
) is greater than
+ 0.3
°C/W
°C/W
Electrical Characteristics
Unit
°C
°C
SS
) clamp
Unit
mA
mA
°C
V
V
Eqn. 1
11