MC9S12A256B ETC, MC9S12A256B Datasheet - Page 91

• Manufacturer Part Number: MC9S12A256B
• Description: device made up of standard HCS12 blocks and the HCS12 processor core
• Manufacturer: ETC

A.1.7 Operating Conditions
This chapter describes the operating conditions of the device. Unless otherwise noted those conditions
apply to all the following data.
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
obtained from:
NOTE:
I/O, Regulator and Analog Supply Voltage
Digital Logic Supply Voltage
PLL Supply Voltage
Voltage Difference VDDX to VDDR and VDDA
Voltage Difference VSSX to VSSR and VSSA
Oscillator
Bus Frequency
MC9S12DP256BC
MC9S12DP256BV
MC9S12DP256BM
NOTES:
1. The device contains an internal voltage regulator to generate the logic and PLL supply out of the I/O supply. The
2. Please refer to Section A.1.8 Power Dissipation and Thermal Characteristics for more details about the rela-
absolute maximum ratings apply when this regulator is disabled and the device is powered from an external
source.
tion between ambient temperature T
Operating Ambient Temperature Range
Operating Ambient Temperature Range
Operating Ambient Temperature Range
Please refer to the temperature rating of the device (C, V, M) with regards to the
ambient temperature T
calculations refer to Section A.1.8 Power Dissipation and Thermal
Characteristics.
Operating Junction Temperature Range
Operating Junction Temperature Range
Operating Junction Temperature Range
2
Rating
1
Freescale Semiconductor, Inc.
For More Information On This Product,
Table A-4 Operating Conditions
A
A
and device junction temperature T
and the junction temperature T
Go to: www.freescale.com
2
2
2
Symbol
V
V
V
DDPLL
VDDX
VSSX
f
f
osc
bus
T
T
T
T
T
T
DD5
DD
A
A
A
J
J
J
MC9S12DP256B Device User Guide — V02.14
Min
2.35
2.35
-0.1
-0.1
-40
-40
-40
-40
-40
-40
4.5
0.5
0.5
J
.
J
. For power dissipation
Typ
2.5
2.5
27
27
27
5
0
0
-
-
-
-
-
Max
5.25
2.75
2.75
100
120
105
140
125
0.1
0.1
16
25
85
J
) in C can be
Unit
MHz
MHz
V
V
V
V
V
C
C
C
C
C
C
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