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MC68HC908GR4MP Datasheet(PDF) 248 Page - Freescale Semiconductor, Inc

Part # MC68HC908GR4MP
Description  M68HC08 Microcontrollers
PDF  286 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MC68HC908GR4MP Datasheet(HTML) 248 Page - Freescale Semiconductor, Inc

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Electrical Specifications
MC68HC908GR8 • MC68HC908GR4 Data Sheet, Rev. 7
248
Freescale Semiconductor
23.2 Functional Operating Range
NOTE
To ensure correct operation of the MCU under all operating conditions, the
user must write data $1C to address $0033 immediately after reset. This is
to ensure proper termination of an unused module within the MCU.
23.3 Thermal Characteristics
Characteristic
Symbol
Value
Unit
Operating temperature range
TA
–40 to +125
°C
Operating voltage range
VDD
3.0
±10%
5.0
±10%
V
Characteristic
Symbol
Value
Unit
Thermal resistance
PDIP (28-pin)
SOIC (28-pin)
QFP (32-pin)
SDIP (42-pin)
θ
JA
60
60
95
57
°C/W
I/O pin power dissipation
PI/O
User-Determined
W
Power dissipation(1)
1. Power dissipation is a function of temperature.
PD
PD = (IDD × VDD) + PI/O =
K/(TJ + 273 °C)
W
Constant(2)
2. K is a constant unique to the device. K can be determined for a known TA and measured PD. With this value of K, PD and
TJ can be determined for any value of TA.
K
PD x (TA + 273 °C)
+ PD
2
× θ
JA
W/
°C
Average junction temperature
TJ
TA + (PD × θJA)
°C
Maximum junction temperature
TJM
140
°C



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