UPD705101GM-100-8ED Просмотр технического описания (PDF) - NEC => Renesas Technology
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UPD705101GM-100-8ED Datasheet PDF : 72 Pages
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µPD705101
4. INTERRUPT/EXCEPTION PROCESSING FUNCTION
The features of the interrupt/exception processing function are as follows:
• Interrupt
• Non-maskable interrupt : 1 source
• Maskable interrupt : 15 sources
• Priority of the programmable interrupt can be specified in four levels
• Nesting interrupt can be controlled according to the priority
• Mask can be specified for each maskable interrupt request
• Valid edge of an external interrupt request can be specified
• Noise rejection circuit provided for the non-maskable interrupt pin (NMI)
• Exception
• Software exception : 32 sources
• Exception trap : 4 sources
The interrupt/exception sources are shown in Tables 4-1 and 4-2.
Table 4-1. Reset/Non-maskable Interrupt/Exception Source List
Type
Classification
Reset
Interrupt
Non-maskable
Interrupt
Software exception Exception
Exception trap
Exception
Source of Interrupt/Exception
NameNote 1
Cause
RESET
Reset input
NMI
NMI input
TRAP 1nH
TRAP 0nH
TRAP instruction
TRAP instruction
NMI
Dual exception
FAULT
Fatal exception
I-OPC
DIV0
Illegal instruction
code
Zero division
Exception Code
(ECR)
Handler
Address
Restore
PCNote 2
FFF0H
FFFFFFF0H Undefined
FFD0H
FFFFFFD0H next PCNote 3
FFBnH
FFFFFFB0H next PC
FFAnH
FFFFFFA0H
Note 4
FFFFFFD0H current PC
Not affected FFFFFFE0H
FF90H
FFFFFF90H
FF80H
FFFFFF80H
Notes 1. Handler names used in development tools or software.
2. The PC value saved to EIPC/FEPC/DPC when interrupt/exception processing is started.
3. Execution of all instructions cannot be stopped by an interrupt.
4. The exception code of an exception causing a dual exception.
Remark n = 0H to FH
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