MC9S12HY64 Datasheet, PDF (721/792 Pages) Freescale Semiconductor, Inc – S12 Microcontrollers

Electrical Characteristics
Table A-4. Operating Conditions
Voltage difference V_SS3 , V_SSPLL to V_SSX
∆_VSS
-0.1
0
0.1
V
Digital logic supply voltage
V_DD
1.72
1.8
1.98
V
Oscillator
f_osc
4
—
16
MHz
Bus frequency
f_bus
0.5
—
32
MHz
Temperature Option C
Operating junction temperature range
Operating ambient temperature range⁽²⁾
°C
TJ
–40
—
105
TA
–40
27
85
Temperature Option V
Operating junction temperature range
Operating ambient temperature range²
°C
TJ
–40
—
125
TA
–40
27
105
Temperature Option M
°C
Operating junction temperature range
Operating ambient temperature range²
TJ
–40
—
150
TA
–40
27
125
1. LCD/Motor Dirver pad can only be work under >4.5V
2. Please refer to Section A.1.8, “Power Dissipation and Thermal Characteristics” for more details about the relation between
ambient temperature T_A and device junction temperature T_J.
NOTE
Operation is guaranteed when powering down until low voltage reset
assertion.
A.1.8 Power Dissipation and Thermal Characteristics
Power dissipation and thermal characteristics are closely related. The user must assure that the maximum
operating junction temperature is not exceeded. The average chip-junction temperature (T_J) in °C can be
obtained from:
TJ = TA + (PD • Θ_JA)
TJ = Junction Temperature, [°C ]
TA = Ambient Temperature, [°C ]
PD = Total Chip Power Dissipation, [W]
Θ_JA = Package Thermal Resistance, [°C/W]
The total power dissipation can be calculated from:
PD = PINT + PIO
PINT = Chip Internal Power Dissipation, [W]
∑ ^{PIO =} _i ^{RDSON ⋅ IIOi2}
MC9S12HY/HA-Family Reference Manual, Rev. 1.04
Freescale Semiconductor
721