MC3S12RG128 Datasheet, PDF (511/546 Pages) Freescale Semiconductor, Inc – Microcontrollers

Appendix A Electrical Characteristics
NOTE
Please refer to the temperature rating of the device (C, V, M) with regards to
the ambient temperature T_A and the junction temperature T_J. For power
dissipation calculations refer to Section A.1.8, “Power Dissipation and
Thermal Characteristics”.
Table A-4. Operating Conditions
Rating
Symbol
Min
Typ
Max
Unit
I/O, Regulator and Analog Supply Voltage
Internal Logic Supply Voltage ¹
PLL Supply Voltage ¹
Voltage Difference VDDX to VDDR and VDDA
Voltage Difference VSSX to VSSR and VSSA
Oscillator
Bus Frequency
MC3S12RG128C
V_DD35
2.97
5
V_DD
2.35
2.5
V_DDPLL
2.35
2.5
∆_VDDX
−0.1
0
∆_VSSX
−0.1
0
f_osc
0.5
−
f_bus
0.25²
−
5.5
V
2.75
V
2.75
V
0.1
V
0.1
V
16
MHz
33³
MHz
Operating Junction Temperature Range
T_J
−40
−
100
°C
Operating Ambient Temperature Range ⁴
T_A
−40
27
85
°C
MC3S12RG128V
Operating Junction Temperature Range
T_J
−40
−
120
°C
Operating Ambient Temperature Range ⁴
T_A
−40
27
105
°C
MC3S12RG128M
Operating Junction Temperature Range
T_J
−40
−
140
°C
Operating Ambient Temperature Range ⁴
T_A
−40
27
125
°C
1 _{The device contains an internal voltage regulator to generate the logic and PLL supply out of the I/O supply. This}
applies when this regulator is disabled and the device is powered from an external source.
2 _{Some blocks e.g. ATD (conversion) require higher bus frequencies for proper operation.}
3 _{single-chip modes only; for expanded modes the max. bus frequency is 25 MHz}
4 _{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.
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 = Junction Temperature, [°C ]
TA = Ambient Temperature, [°C ]
TJ = TA + (PD • Θ_JA)
MC3S12RG128 Data Sheet, Rev. 1.05
Freescale Semiconductor
511