參數(shù)資料
型號： MC68HC916X1CTH16
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 16-BIT, FLASH, 16.78 MHz, MICROCONTROLLER, PQFP120
封裝： QFP-120
文件頁數(shù)： 48/172頁
文件大小： 1200K
代理商： MC68HC916X1CTH16
MC68HC916X1
MOTOROLA
MC68HC916X1TS/D
141
Table 74 Typical Ratings
Num
Rating
Symbol
Value
Unit
1
Supply Voltage
VDD
5.0
V
2
Operating Temperature
TA
25
°C
3
VDD Supply Current
RUN
LPSTOP, VCO Off
LPSTOP, External clock, max fsys
IDD
116
500
3
mA
A
4
Clock Synthesizer Operating Voltage
VDDSYN
5.0
V
5
VDDSYN Supply Current
VCO on, maximum fsys
External Clock, maximum fsys
LPSTOP, VCO off
VDD powered down
IDDSYN
1.0
4.0
125
60
mA
A
6
RAM Standby Voltage
VSB
3.0
V
7
RAM Standby Current
Normal RAM operation
Standby operation
ISB
7.0
40.0
A
8
Power Dissipation
PD
600
mW
Table 75 Thermal Characteristics
Num
Characteristic
Symbol
Value
Unit
1
Thermal Resistance
Plastic 120-Pin Surface Mount
Θ
JA
61.2
°C/W
The average chip-junction temperature (TJ) in C can be obtained from:
(1)
where:
TA
= Ambient Temperature,
°C
Θ
JA
= Package Thermal Resistance, Junction-to-Ambient,
°C/W
PD
= PINT + PI/O
PINT
= IDD × VDD, Watts — Chip Internal Power
PI/O
= Power Dissipation on Input and Output Pins — User Determined
For most applications PI/O < PINT and can be neglected. An approximate relationship between
PD and TJ (if PI/O is neglected) is:
(2)
Solving equations 1 and 2 for K gives:
(3)
where K is a constant pertaining to the particular part. K can be determined from equation (3)
by measuring PD (at equilibrium) for a known TA. Using this value of K, the values of PD and TJ
can be obtained by solving equations (1) and (2) iteratively for any value of TA.
T
J
T
A
P
D
Θ
JA
×
()
+
=
P
D
KT
J
273
°C
+
()
÷
=
KP
D
T
A
273
°C
+
() Θ
JA
P
D
2
×
++
=
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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