MC9S08LG32 Datasheet, PDF (11/47 Pages) Freescale Semiconductor, Inc – 8-bit HCS08 Central Processor Unit (CPU)

Electrical Characteristics
Table 4. Absolute Maximum Ratings
Rating
Symbol
Value
Unit
Supply voltage
Maximum current into V_DD
Digital input voltage
Instantaneous maximum current
Single pin limit (applies to all port pins)^{1, 2, 3}
V_DD
–0.3 to +5.8
V
I_DD
120
mA
V_In
–0.3 to V_DD + 0.3
V
I_D
±25
mA
±2
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 and use the largest 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 an external power supply going
out of regulation. Ensure that the external V_DD load will shunt current greater than maximum
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).
2.4 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
48-pin LQFP
Thermal resistance
Four-layer board
80-pin LQFP
64-pin LQFP
48-pin LQFP
Symbol
T_A
T_J
θ_JA
Value
Unit
T_L to T_H
°C
–40 to +105
125
°C
61
°C/W
71
80
θ_JA
48
°C/W
52
56
The average chip-junction temperature (T_J) in °C can be obtained from:
T_J = T_A + (P_D × θ_JA)
Eqn. 1
MC9S08LG32 Series Data Sheet, Rev. 4
Freescale Semiconductor
11
Preliminary - Subject to Change Without Notice