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7641 Datasheet(PDF) 139 Page - Renesas Technology Corp

Part # 7641
Description  8-BIT SINGLE-CHIP MICROCOMPUTER
PDF  385 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

7641 Datasheet(HTML) 139 Page - Renesas Technology Corp

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Rev.2.00
Aug 28, 2006
page 8 of 148
7641 Group
REJ09B0336-0200
APPLICATION
2.1 I/O port
Fig. 2.1.12 Control procedure
Fig. 2.1.11 Connection diagram
7641 group
P20
P21
P22
P23
P24
P2i (i : 0 to 4)
Key ON
P2D
PUP2
PTC
(address 0D16)
(address 1216)
(address 1016)
RESET
IREQC,bit6
ICONC,bit6
0
1
(address 0416)
(address 0716)
RTI
XXX000002
XXX111112
X0XXXXXX2
Initialization
q X: This bit is not used here. Set it to “0” or “1” arbitrarily.
•Set to input mode
•Pull-up enabled
•Reduced VIHL level
WIT
Power down process
Key input interrupt routine
Key input interrupt process
Process continued
•Set key input interrupt request bit to “0”
•Key input interrupt enabled



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