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M38B53M4-059FP Datasheet(PDF) 138 Page - Mitsubishi Electric Semiconductor

Part # M38B53M4-059FP
Description  8-BIT SINGLE-CHIP MICROCOMPUTER
PDF  355 Pages
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Manufacturer  MITSUBISHI [Mitsubishi Electric Semiconductor]
Direct Link  http://www.mitsubishichips.com
Logo MITSUBISHI - Mitsubishi Electric Semiconductor

M38B53M4-059FP Datasheet(HTML) 138 Page - Mitsubishi Electric Semiconductor

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2-50
38B5 Group User’s Manual
APPLICATION
2.3 Serial I/O
2.3.5 Serial I/O1 application examples
(1)
Output of serial data (control of peripheral IC)
Outline : Serial communication is performed, connecting ports with the CS pin of a peripheral IC.
Figure 2.3.20 shows a connection diagram, and Figure 2.3.21 shows a timing chart.
Fig. 2.3.20 Connection diagram
Specifications : • Use of serial I/O1 (Not using automatic transfer function)
• Synchronous clock frequency : 131 kHz (f(XIN) = 4.19 MHz is divided by 32)
• Transfer direction : LSB first
• Not use of serial I/O1 interrupt
• Port P62 is connected to the CS pin (“L” active) of the peripheral IC for transmission
control; the output level of port P62 is controlled by software.
Fig. 2.3.21 Timing chart
P62
P52/SCLK11
P51/SOUT1
38B5 groupPeripheral IC
CS
CLK
DATA
CS
CLK
DATA
CS
CLK
DATA
DO0
DO1
DO2
DO3



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