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M38269EBGP Fiches technique(PDF) 25 Page - Renesas Technology Corp

No de pièce M38269EBGP
Description  SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
PDF  91 Pages
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Fabricant  RENESAS [Renesas Technology Corp]
Site Internet  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

M38269EBGP Fiches technique(HTML) 25 Page - Renesas Technology Corp

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Rev.1.00
Sep 06, 2006
page 25 of 88
REJ03B0181-0100
3826 Group (One Time PROM version)
The key input interrupt is controlled by the key input control regis-
ter and the port direction register. When enabling the key input
interrupt, set “1” to the key input control bit. A key input can be ac-
cepted from pins set as the input mode in ports P20–P27.
Fig. 21 Structure of key input control register
P20 key input control bit
P21 key input control bit
P22 key input control bit
P23 key input control bit
P24 key input control bit
P25 key input control bit
P26 key input control bit
P27 key input control bit
0 : Key input interrupt disabled
1 : Key input interrupt enabled
Key input control register
(KIC : address 001516)
b7
b0



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