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4513 Datasheet(PDF) 111 Page - Renesas Technology Corp

Part # 4513
Description  4-BIT SINGLE-CHIP MICROCOMPUTER
PDF  210 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

4513 Datasheet(HTML) 111 Page - Renesas Technology Corp

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2-8
APPLICATION
2.1 I/O pins
4513/4514 Group User’s Manual
Fig. 2.1.2 Key scan input timing
D0
D1
D2
D3
IAP0
IAP0
IAP0
IAP0
IAP0
“H”
“L”
“H”
“L”
“H”
“L”
“H”
“L”
Input to
SW1–SW4
Input to
SW13–SW16
Input to
SW9–SW12
Input to
SW5–SW8
Input to
SW1–SW4
Key input period
Switching key input selection port (D
→D )
Stabilizing wait time for input
Reading port (key input)
Note: “H” output of port D becomes high-impedance state.
0
1



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