參數(shù)資料
型號： MB90F462
廠商： Fujitsu Limited
英文描述： 16-bit Proprietary Microcontroller
中文描述： 16位微控制器專有
文件頁數(shù)： 32/85頁
文件大?。?/td> 827K
代理商： MB90F462
MB90460 Series
32
2.
I/O Ports
(1) Outline of I/O ports
When a data register serving for control output is read, the data output from it as a control output is read regardless
of the value in the direction register. Note that, if a read-modify-write instruction (such as a bit set instruction) is
used to preset output data in the data register when changing its setting from input to output, the data read is
not the data register latched value but the input data from the pin.
Ports 0 to 4 and 6 are input/output ports which serve as inputs when the direction register value is “0” or as
outputs when the value is “1”.
Port 5 are input/output ports as other port when ADER is 00
H
.
Block Diagram
Block diagram of Port 0 pins
(Continued)
RDR
Port data register (PDR)
Resource output enable
Pull-up resistor
About 50 K
Standby control (SPL
=
1)
PDR read
PDR write
DDR write
DDR read
Port data direction register (DDR)
I
Output latch
Pin
Resource output
Direction
latch
Direct resource input
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