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参数资料
| 型号： | M37481M8-XXXFP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PQFP44 |
| 封装： | 10 X 10 MM, 0.80 MM PITCH, PLASTIC, QFP-44 |
| 文件页数： | 34/100页 |
| 文件大小： | 1457K |
| 代理商： | M37481M8-XXXFP |
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MITSUBISHI MICROCOMPUTERS
7480/7481 GROUP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
36
PRELIMINAR
Y
Notice:
This
is not
a final
specification.
Some
parametric
limits
are
subject
to change.
Fig. 37 Priority control at simplified SAEJ1850
BU S+
BU S-
Unit
A
Unit
B
Unit A
LAN data bus
Unit B
Continue to transmit
Stop transmitting
Data collision
LAN data bus
Application Example
Priority Control at Simplified SAEJ1850
At simplified SAEJ1850 communication, when multiple units start
to transmit data at the same time, priority control is exerted.
On the LAN data bus, the “H” level has priority over the “L” level.
When an “H” level collides with an “L” level, the LAN data bus sta-
tus goes to the “H” level.
For example, when unit A outputs “H” and unit B outputs “L” at the
same time in Figure 37, the LAN data bus goes to “H”. Accord-
ingly, unit A takes priority of control and continues its transmission,
and unit B stops its transmission immediately.
In this way, the 7480/7481 group exerts priority control for each bit
and finally allows only the highest-priority unit to transmit data.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| M37481M8-XXXSP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:8-BIT SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 7470 SERIES |
| M37481MT-088FP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37481MXT | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37481MXT-XXXFP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37481MXT-XXXSP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
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