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32171 Datasheet(PDF) 93 Page - Renesas Technology Corp

Part # 32171
Description  32-BIT RISC SINGLE-CHIP MICROCOMPUTER M32R FAMILY / M32R/ECU SERIES
PDF  772 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

32171 Datasheet(HTML) 93 Page - Renesas Technology Corp

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4-9
32171 Group User's Manual (Rev.2.00)
Figure 4.6.1 Saving and Restoring the PC and PSW
PSW
BPC
PC
When EIT is accepted
When "RTE" instruction is executed
Save SM, IE, and C bits
BSM
BIE
BC
SM
IE
C
Update SM, IE, and C bits
SM
IE
C
Unchanged/0
0
0
Save PC
BPC
PC
Set vector address in PC
PC
Vector address
Restore PC value from BPC
The value of BPC after
execution of the "RTE"
instruction is indeterminate.
Restore BSM, BIE, and BC bits
from backup bits
SM
IE
C
The values of BSM, BIE, and BC
bits after execution of the "RTE"
instruction are indeterminate.
BSM
BIE
BC
(b)
(d)
(c)
(e)
(f)
(a)
(a)
(c)
(b)
(e)
(d)
(f)
16 17
23 24 25
31(LSB)
15
8
7
0(MSB)
SM
IE
C
BC
BSM
BIE
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
PSW
BPSW field
PSW field
EIT
4.6 Saving and Restoring the PC and PSW



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