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32186 Datasheet(PDF) 131 Page - Renesas Technology Corp

Part # 32186
Description  MCU
PDF  1032 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

32186 Datasheet(HTML) 131 Page - Renesas Technology Corp

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INTERRUPT CONTROLLER (ICU)
5
5-7
32185/32186 Group Hardware Manual
Rev.1.10 REJ09B0235-0110 May 15, 07
5.2 ICU Related Registers
5.2.3 SBI (System Break Interrupt) Control Register
SBI (System Break Interrupt) Control Register (SBICR)
<Address: H’0080 0006>
123456
b7
b0
SBIREQ
0
0
0
0
0
0
0
0
<Upon exiting reset: H’00>
b
Bit Name
Function
R
W
0–6
No function assigned. Fix to "0"
00
7
SBIREQ
0: SBI not requested
R(Note 1)
SBI request bit
1: SBI requested
Note 1: This bit can only be cleared (see below)
The System Break Interrupt (SBI) is an interrupt request generated by a falling edge on the SBI# signal
input pin.
When a falling edge on the SBI# signal input pin is detected and this bit is set to "1," a system break
interrupt (SBI) request is generated to the CPU.
This bit cannot be set to "1" in software, it can only be cleared.
To clear this bit to "0," follow the procedure described below.
1. Write "1" to the SBI request bit.
2. Write "0" to the SBI request bit.
Notes: • Unless this bit is set to "1," do not perform the above clearing operation.
• If falling edge is inputted to SBI# pin again, system break is not occured while SBI request bit is
set to "1."



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