230
Chapter 7
Interrupt/Exception Processing Function
User’s Manual U16580EE3V1UD00
Figure 7-6:
Maskable Interrupt Processing
Note:
7.3.6 ”In-service priority register (ISPR)” on page 242
.
An INT input masked by the interrupt controllers and an INT input that occurs while another interrupt is
being processed (when PSW.NP = 1 or PSW.ID = 1) are held pending internally by the interrupt
controller. In such case, if the interrupts are unmasked, or when PSW.NP = 0 and PSW.ID = 0 as set by
the RETI and LDSR instructions, input of the pending INT starts the new maskable interrupt
processing.
INT input
xxIF = 1
No
xxMK = 0
No
Is the interrupt
mask released?
Yes
Yes
No
No
No
Maskable interrupt request
Interrupt request held pending
PSW.NP
PSW.ID
1
1
Interrupt request held pending
0
0
Interrupt processing
CPU processing
INTC accepted
Yes
Yes
Yes
Priority higher than
that of interrupt currently
being processed?
Priority higher
than that of other interrupt
request?
Highest default
priority of interrupt requests
with the same priority?
EIPC
EIPSW
ECR.EICC
PSW.EP
PSW.ID
Corresponding
bit of ISPR
Note
PC
restored PC
PSW
exception code
0
1
1
handler address
Summary of Contents for MuPD70F3187
Page 6: ...6 Preface User s Manual U16580EE3V1UD00 ...
Page 16: ...16 User s Manual U16580EE3V1UD00 ...
Page 28: ...28 User s Manual U16580EE3V1UD00 ...
Page 32: ...32 User s Manual U16580EE3V1UD00 ...
Page 84: ...84 Chapter 2 Pin Functions User s Manual U16580EE3V1UD00 MEMO ...
Page 144: ...144 Chapter 3 CPU Functions User s Manual U16580EE3V1UD00 MEMO ...
Page 312: ...312 Chapter 9 16 Bit Timer Event Counter P User s Manual U16580EE3V1UD00 MEMO ...
Page 534: ...534 Chapter 11 16 bit Timer Event Counter T User s Manual U16580EE3V1UD00 ...
Page 969: ...969 Chapter 20 Port Functions User s Manual U16580EE3V1UD00 MEMO ...
Page 970: ...970 Chapter 20 Port Functions User s Manual U16580EE3V1UD00 ...
Page 976: ...976 Chapter 22 Internal RAM Parity Check Function User s Manual U16580EE3V1UD00 MEMO ...
Page 984: ...984 Chapter 23 On Chip Debug Function OCD User s Manual U16580EE3V1UD00 MEMO ...
Page 1006: ...1006 Chapter 24 Flash Memory User s Manual U16580EE3V1UD00 MEMO ...
Page 1036: ...1036 Chapter 27 Recommended Soldering Conditions User s Manual U16580EE3V1UD00 MEMO ...
Page 1046: ...1046 Appendix A Index User s Manual U16580EE3V1UD00 MEMO ...
Page 1052: ...1052 User s Manual U16580EE3V1UD00 ...
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