5
5-3
INTERRUPT CONTROLLER (ICU)
32180 Group User’s Manual (Rev.1.0)
Interrupt Vector Register
(IVECT)
Interrupt Request Mask
Register (IMASK)
NEW_IMASK
External Interrupt (EI)
request generated
(maskable)
IMASK
compari-
son
ILEVEL
System Break Interrupt (SBI)
request generated
(nonmaskable)
SBI#
EI
SBI
Interrupt Controller
Interrupt Control Register
SBI Control Register
(SBICR)
SBIREQ
IREQ
IREQ
IREQ
IREQ
IREQ
IREQ
Peripheral circuits
Edge
Interrupt
control circuit
Edge
Edge
Level
Interrupt request
Interrupt request
Interrupt request
Level
Level
To the CPU core
To the CPU core
Interrupt
control circuit
Interrupt
control circuit
Pr
ior
ity resolv
ed b
y
interr
upt pr
ior
ity le
v
els set
Pr
ior
ity resolv
ed b
y
fix
ed hardw
are pr
ior
ity
Figure 5.1.1 Block Diagram of the Interrupt Controller
5.1 Outline of the Interrupt Controller
Summary of Contents for M32R/ECU Series
Page 17: ...12 This page is blank for reasons of layout...
Page 712: ...CHAPTER 18 OSCILLATOR CIRCUIT 18 1 Oscillator Circuit 18 2 Clock Generator Circuit...
Page 794: ...CHAPTER 22 TYPICAL CHARACTERISTICS...
Page 796: ...APPENDIX 1 MECHANICAL SPECIFICAITONS Appendix 1 1 Dimensional Outline Drawing...
Page 798: ...APPENDIX 2 INSTRUCTION PROCESSING TIME Appendix 2 1 32180 Instruction Processing Time...
Page 802: ...APPENDIX 3 PROCESSING OF UNUSED PINS Appendix 3 1 Example Processing of Unused Pins...