参数资料
型号: M38D5XGXHP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 6.25 MHz, MICROCONTROLLER, PQFP80
封装: 12 X 12 MM, 0.50 MM PITCH, PLASTIC, LQFP-80
文件页数: 62/142页
文件大小: 2004K
代理商: M38D5XGXHP
Rev.3.04
May 20, 2008
Page 26 of 134
REJ03B0158-0304
38D5 Group
Termination of unused pins
Termination of common pins
I/O ports:
Select an input port or an output port and follow
each processing method.
In addition, it is recommended that related
registers be overwritten periodically to prevent
malfunctions, etc.
Output ports: Open.
Input ports:
If the input level become unstable, through current
flow to an input circuit, and the power supply
current may increase.
Especially, when expecting low consumption
current (at STP or WIT instruction execution etc.),
pull-up or pull-down input ports to prevent
through current (built-in resistor can be used).
We recommend processing unused pins through a
resistor which can secure IOH(avg) or IOL(avg).
Because, when an I/O port or a pin which have an
output function is selected as an input port, it may
operate as an output port by incorrect operation
etc.
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