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参数资料
| 型号： | MAC7121MAG40 |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, FLASH, 40 MHz, RISC MICROCONTROLLER, PQFP112 |
| 封装： | 20 X 20 MM, 0.65 MM PITCH, ROHS COMPLIANT, LQFP-112 |
| 文件页数： | 56/56页 |
| 文件大小： | 1216K |
| 代理商： | MAC7121MAG40 |
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ElectricalCharacteristics
MAC7100 Microcontroller Family Hardware Specifications, Rev. 1.2
Preliminary
Freescale Semiconductor
9
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,
θ
JA, will continue to be commonly used.
The average chip-junction temperature (TJ) in °C is obtained from the formula:
Eqn. 1
where
The total power dissipation is calculated as:
Eqn. 2
where
Two cases must be considered for PINT:
1. Internal voltage regulator enabled:
Eqn. 3
2. Internal voltage regulator disabled (VDDR = VSSR = system ground):
Eqn. 4
PIO is the sum of all output currents on input/output pins associated with VDDX:
Eqn. 5
where
Eqn. 6
or
Eqn. 7
Table 10. Thermal Resistance 1/8 Simulation Model Packaging Parameters
Component
Conductivity
Mold Compound
0.9 W/m K
Leadframe (Copper)
263 W/m K
Die Attach
1.7 W/m K
T
J
T
A
P
D
Θ
JA
+
=
T
J
Junction Temperature (
°C)
=
T
A
Ambient Temperature (
°C)
=
P
D
Total Chip Power Dissipation (W)
=
Θ
JA
Package Thermal Resistance (
°C/W)
=
P
D
P
INT
P
IO
+
=
P
INT
Chip Internal Power Dissipation (W)
=
P
IO
Input / Output Power Dissipation (W)
=
P
INT
I
DDRVDDR
×
()
I
DDAVDDA
×
()
+
=
P
INT
I
DD2.5
V
DD2.5
×
()
I
DDPLL
V
DDPLL
×
()
I
DDAVDDA
×
()
++
=
P
IO
R
DSON
i
∑
I
IO
i
()2
=
R
DSON
V
OL
I
OL
--------- (for outputs driven low)
=
R
DSON
V
DDXVOH
–
I
OL
------------------------------- (for outputs driven high)
=
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAC7121MAG50 | 制造商:Freescale Semiconductor 功能描述: |
| MAC7121MFU | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:MAC7100 Microcontroller Family Hardware Specifications |
| MAC7121MFU50 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Microcontroller Family Hardware Specifications |
| MAC7121MPV | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:MAC7100 Microcontroller Family Hardware Specifications |
| MAC7121MPV50 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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