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32170 Datasheet(PDF) 101 Page - Renesas Technology Corp

Part # 32170
Description  32-bit RISC Single-chip Microcomputers
PDF  881 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

32170 Datasheet(HTML) 101 Page - Renesas Technology Corp

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4-6
32170/32174 Group User's Manual (Rev. 2.1)
4.4 EIT Processing Mechanism
The M32R/ECU's EIT processing mechanism consists of the M32R CPU core and the interrupt
controller for internal peripheral I/Os. It also has the backup registers for the PC and PSW (BPC
register and the BPSW field of the PSW register). The M32R/ECU's internal EIT processing
mechanism is shown below.
Figure 4.4.1 The M32R/ECU's EIT Processing Mechanism
Interrupt
controller
(ICU)
SBI
EI
Internal
peripheral
I/O
RESET
RI
AE, RIE, TRAP
IE flag
(PSW)
M32R CPU core
SBI
Low
High
Priority
SBI
EI
RI
M32R/ECU
PSW register
PSW
BPSW
BPC register
PC register
EIT
4.4 EIT Processing Mechanism



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