tmp88fw45afg TOSHIBA Semiconductor CORPORATION, tmp88fw45afg Datasheet - Page 48
tmp88fw45afg
Manufacturer Part Number
tmp88fw45afg
Description
8 Bit Microcontroller Tlcs-870/x Series
Manufacturer
TOSHIBA Semiconductor CORPORATION
Datasheet
1.TMP88FW45AFG.pdf
(294 pages)
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3.4
Software Interrupt (INTSW)
3.4
3.4.1
3.4.2
is highest prioritized interrupt). However, if processing of a non-maskable interrupt is already underway, executing
the SWI instruction will not generate a software interrupt but will result in the same operation as the NOP instruction.
Software Interrupt (INTSW)
Executing the SWI instruction generates a software interrupt and immediately starts interrupt processing (INTSW
Use the SWI instruction only for detection of the address error or for debugging.
memory address during single chip mode. Code FFH is the SWI instruction, so a software interrupt is generated
and an address error is detected. The address error detection range can be further expanded by writing FFH to
unused areas of the program memory. Address trap reset is generated in case that an instruction is fetched from
RAM, DBR or SFR areas.
address.
Address error detection
Debugging
FFH is read if for some cause such as noise the CPU attempts to fetch an instruction from a non-existent
Debugging efficiency can be increased by placing the SWI instruction at the software break point setting
Page 34
TMP88FW45AFG
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