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7733 bảng dữ liệu(PDF) 840 Page - Renesas Technology Corp

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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
7736 Group User’s Manual
5–6
5.2.3 Interrupt function
____
The key input interrupt and the INT2 interrupt share the same interrupt vector addresses and interrupt control
register. Specify addresses FFF016 and FFF116 (in order wor
ds, the vector addresses for the INT 2 /key input
interrupt) as the interrupt vector addresses; specify the INT2/key input interrupt control register (address 7F16)
as the interrupt control register. Figure 5.2.4 shows the structure of the INT2/key input interrupt control register
when the key input interrupt function is selected.
The operation at accepting a key input interrupt request is the same as that at accepting an INT2 interrupt
request.
5.2 Block description
____
Fig. 5.2.4 Structure of INT2/key input interrupt control register when key input interrupt function is selected
b7
b6
b5
b4
b3
b2
b1
b0
INT2
/key input interrupt control register (address 7F16)
Bit
4
Must be fixed to “0.”
3
Interrupt request bit
2
1
0
Interrupt priority level selection
bits
Bit name
At reset
Undefined
0
0
0
0
0
0
RW
Functions
0 0 0: Level 0 (Interrupt is disabled.)
0 0 1: Level 1
0 1 0: Level 2
0 1 1: Level 3
1 0 0: Level 4
1 0 1: Level 5
1 1 0: Level 6
1 1 1: Level 7
b2 b1 b0
0: No interrupt request has occurred.
1: Interrupt request has occurred.
5
7
6
Not implemented.
00
Undefined
RW
RW
RW
RW
RW
RW
–
–



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