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參數(shù)資料
| 型號： | MAC7111CPV50 |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-BIT, FLASH, 50 MHz, RISC MICROCONTROLLER, PQFP144 |
| 封裝： | 20 X 20 MM, 0.50 MM PITCH, LQFP-144 |
| 文件頁數(shù)： | 45/48頁 |
| 文件大?。?/td> | 1282K |
| 代理商： | MAC7111CPV50 |
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6
MAC7100 Microcontroller Family Hardware Specifications
MOTOROLA
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
Electrical Characteristics
3.4.1
5 V I/O Pins
The I/O pins operate at a nominal level of 5 V. This class of pins is comprised of the clocks, control and general
purpose/peripheral pins. The internal structure of these pins is identical; however, some functionality may be
disabled (for example, for analog inputs the output drivers, pull-up/down resistors are permanently disabled).
3.4.2
Oscillator Pins
The pins XFC, EXTAL, XTAL are dedicated to the oscillator and operate at a nominal level of 2.5 V.
3.5
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.
Note that the JEDEC specification reserves the symbol RθJA or θJA (Theta-JA) strictly for junction-to-
ambient thermal resistance on a 1s test board in natural convection environment. RθJMA or θJMA
(Theta-JMA) will be used for both junction-to-ambient on a 2s2p test board in natural convection and for
junction-to-ambient with forced convection on both 1s and 2s2p test boards. It is anticipated that the generic
name,
θJA, will continue to be commonly used.
The average chip-junction temperature (TJ) in °C is obtained from:
The total power dissipation is calculated from:
Two cases for PIO, with the internal voltage regulator enabled and disabled, must be considered:
1. Internal Voltage Regulator disabled:
PIO is the sum of all output currents on I/O ports associated with VDDX and VDDR.
or
2. Internal voltage regulator enabled:
additionally contains the current flowing into the external loads with output high.
TJ
TA
Θ
JA
()
+
=
TJ
Junction Temperature (°C)
=
TA
Ambient Temperature (°C)
=
PD
Total Chip Power Dissipation (W)
=
Θ
JA
Package Thermal Resistance (°C/W)
=
PD
PINT PIO
+
=
PINT
Chip Internal Power Dissipation (W)
=
PINT
IDD VDD
×
()
IDDPLL VDDPLL
×
()
IDDAVDDA
×
()
++
=
PIO
RDSON
i
∑
IIO
i
()2
=
RDSON
VOL
IOL
---------- (for outputs driven low)
=
RDSON
VDD5VOH
–
IOL
------------------------------- (for outputs driven high)
=
PINT
IDDRVDDR
×
()
IDDAVDDA
×
()
+
=
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