MCF51JM64 FREESCALE [Freescale Semiconductor, Inc], MCF51JM64 Datasheet - Page 16

• Manufacturer Part Number: MCF51JM64
• Description: MCF51JM128 ColdFire Microcontroller
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Preliminary Electrical Characteristics
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
16
Thermal Characteristics
1
2
3
1
2
Supply voltage
Input voltage
Instantaneous maximum current
(applies to all port pins)
Maximum current into V
Storage temperature
Maximum junction temperature
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.
Junction to Ambient Natural Convection
SS
DD
, the injection current may flow out of V
or V
Operating temperature range (packaged)
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. 2
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
–40 to +105
> V
Value
± 25
120
150
Value
DD
DD
52
40
65
47
54
40
69
48
) is greater than
+ 0.3
Freescale Semiconductor
SS
) clamp
°C/W
Unit
Unit
mA
mA
°C
°C
°C
V
V