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7733 bảng dữ liệu(PDF) 839 Page - Renesas Technology Corp

tên linh kiện 7733
Giải thích chi tiết về linh kiện  16-BIT SINGLE-CHIP MICROCOMPUTER
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nhà sản xuất  RENESAS [Renesas Technology Corp]
Trang chủ  http://www.renesas.com
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key input interrupt function is selected. When this bit
KEY INPUT INTERRUPT FUNCTION
7736 Group User’s Manual
5–5
(1) Port P6 pull-up selection bit (bit 5)
____
When using pin P64/INT2 as an input pin for the key input interrupt, set this bit to “1.” When this bit
____
is set to “1,” pin P64/INT2 is pulled high.
(2) Port P10 pull-up selection bit (bit 6)
___
___
This is a bit to pull pins KI0 to KI3 high. When configuring a key matrix, there is no need to connect
___
___
pull-up transistors externally if this bit is set to “1,” in other words, if pins KI0 to KI3 are set to be pulled
high.
(3) Key input interrupt selection bit (bit 7)
This is a bit to select the key input interrupt function.
____
The key input interrupt and the INT2 interrupt share the same interrupt vector addresses and interrupt
control register. When this bit is set to “1,” the
= “1” and bit 5 (Port P6 pull-up selection bit )
____
____
= “0,” pin P6 4/INT 2 is a programmable I/O port. (At this time,
the INT2
interrupt cannot be used.) When
____
both of this bit and bit 5 (Port P6 pull-up selection bit 1) are “1,”
pin P64 / INT2 can be used for the key input interrupt.
5.2 Block description



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