mcf51jm128 Freescale Semiconductor, Inc, mcf51jm128 Datasheet - Page 15

• Manufacturer Part Number: mcf51jm128
• Description: Mcf51jm128 Coldfire Microcontroller Flexis 32-bit V1 Coldfire? Usb Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

2.3
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 it is user-determined rather than
being controlled by the MCU design. To take P
pin voltage and V
(heavy loads), the difference between pin voltage and V
Freescale Semiconductor
Thermal Characteristics
1
2
3
1
Supply voltage
Input voltage
Instantaneous maximum current
(applies to all port pins)
Maximum current into V
Storage temperature
Maximum junction temperature
Operating temperature range (packaged)
Thermal resistance
80-pin LQFP
64-pin LQFP
64-pin QFP
44-pin LQFP
Input must be current limited to the value specified. To determine the value of the required
current-limiting resistor, calculate resistance values for positive (V
voltages, then use the larger 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 external V
current. This is the greatest risk when the MCU is not consuming power. Examples: if no system
clock is present or if the clock rate is low, which would reduce overall power consumption.
Junction temperature is a function of die size, on-chip power dissipation, package thermal
resistance, mounting site (board) temperature, ambient temperature, air flow, power dissipation
of other components on the board, and board thermal resistance.
SS
DD
, the injection current may flow out of V
or V
DD
and multiply by the pin current for each I/O pin. Except in cases of unusually high pin current
1,2,3,4
Rating
MCF51JM128 ColdFire Microcontroller, Rev. 0
1
DD
,
Rating
2
Table 6. Absolute Maximum Ratings
,
3
Table 7. Thermal Characteristics
I/O
into account in power calculations, determine the difference between actual
Single pin limit
DD
load shunt current is greater than maximum injection
SS
or V
DD
and could result in external power supply going
DD
is small.
2s2p
2s2p
2s2p
2s2p
1s
1s
1s
1s
Symbol
T
V
V
I
T
I
DD
stg
DD
SS
D
In
J
DD
Symbol
and V
range during instantaneous and
θ
T
JA
A
DD
– 0.3 to V
DD
) and negative (V
–0.3 to + 5.8
.
–55 to +150
In
Preliminary Electrical Characteristics
–40 to +105
> V
Value
± 25
120
150
Value
DD
DD
52
40
65
47
54
40
69
48
) is greater than
+ 0.3
SS
) clamp
°C/W
Unit
Unit
mA
mA
°C
°C
°C
V
V
15