MC9S08GW64_11 Datasheet, PDF (11/42 Pages) Freescale Semiconductor, Inc – HC08 instruction set with added BGND instruction

Electrical Characteristics
high-impedance circuit. Reliability of operation is enhanced if unused inputs are tied to an appropriate logic voltage level (for
instance, either V_SS or V_DD) or the programmable pull-up resistor associated with the pin is enabled.
Table 4. Absolute Maximum Ratings
Rating
Symbol
Value
Unit
Supply voltage
V_DD
–0.3 to +3.8
V
Maximum current into V_DD
I_DD
120
mA
Digital input voltage
V_In
–0.3 to V_DD + 0.3
V
Instantaneous maximum current
I_D
Single pin limit (applies to all port pins except PTA5
and PTB1)^{1, 2, 3}
 25
mA
Instantaneous maximum current
I_D
Single pin limit (applies to PTA5 and PTB1)^1,2,3
 50
mA
Storage temperature range
T_stg
–55 to 150
C
1 _{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_DD) and negative (V_SS) clamp
voltages, then use the larger of the two resistance values.
2 _{All functional non-supply pins are internally clamped to VSS and VDD.}
3 _{Power supply must maintain regulation within operating VDD range during instantaneous and}
operating maximum current conditions. If positive injection current (V_In > V_DD) is greater than
I_DD, the injection current may flow out of V_DD and could result in external power supply going
out of regulation. Ensure external V_DD load will shunt current greater than maximum injection
current. This will be the greatest risk when the MCU is not consuming power. Examples are: if
no system clock is present, or if the clock rate is very low (which would reduce overall power
consumption).
3.4 Thermal Characteristics
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_I/O into account in power calculations, determine
the difference between actual pin voltage and V_SS or V_DD and multiply by the pin current for each I/O pin. Except in cases of
unusually high pin current (heavy loads), the difference between pin voltage and V_SS or V_DD will be very small.
Table 5. Thermal Characteristics
Rating
Operating temperature range
(packaged)
Maximum junction temperature
Thermal resistance
Single-layer board
80-pin LQFP
64-pin LQFP
Thermal resistance
Four-layer board
80-pin LQFP
64-pin LQFP
Symbol
T_A
T_J
_JA
Value
Unit
T_L to T_H
C
–40 to 85
95
C
61
C/W
70
_JA
48
C/W
52
MC9S08GW64 Series MCU Data Sheet, Rev. 3
Freescale Semiconductor
11