參數(shù)資料
型號: MC68HC11F1CPU5
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, EEPROM, 5 MHz, MICROCONTROLLER, PQFP80
封裝: 14 X 14 MM, 1.40 MM HEIGHT, PLASTIC, LQFP-80
文件頁數(shù): 42/163頁
文件大?。?/td> 711K
代理商: MC68HC11F1CPU5
MOTOROLA
ELECTRICAL CHARACTERISTICS
MC68HC11F1
A-2
TECHNICAL DATA
NOTES:
1 This is an approximate value, neglecting PI/O.
2. For most applications PI/O PINT and can be neglected.
3. K is a constant pertaining to the device. Solve for K with a known TA and a measured PD (at equilibrium. Use
this value of K to solve for PD and TJ iteratively for any value of TA
Table A-2 Thermal Characteristics
Characteristic
Symbol
Value
Unit
Average Junction Temperature
TJ
TA + (PD x QJA)
°C
Ambient Temperature
TA
User-determined
°C
Package Thermal Resistance (Junction-to-Ambient)
68-Pin Plastic Leaded Chip Carrier
80-Pin Low Profile Quad Flat Pack (LQFP, 1.4 mm Thick)
QJA
50
80
°C/W
Total Power Dissipation
(Note 1)
PD
PINT + PI/O
K / (TJ + 273°C)
W
Device Internal Power Dissipation
PINT
IDD x VDD
W
I/O Pin Power Dissipation
(Note 2)
PI/O
User-determined
W
A Constant
(Note 3)
K
PD x (TA + 273°C) +
QJA x PD
2
W x
°C
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