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UPD784938 Datasheet(PDF) 75 Page - NEC

Part # UPD784938
Description  16-Bit Single-Chip Microcontrollers
Download  733 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD784938 Datasheet(HTML) 75 Page - NEC

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CHAPTER 3 CPU ARCHITECTURE
Preliminary User’s Manual U13987EJ1V0UM00
3.3.1 Vector table area
The 64-byte area from 00000H to 0003FH is reserved as the vector table area. The vector table area stores the program
start addresses used when a branch is made as the result of RESET input or generation of an interrupt request. When context
switching is used by an interrupt, the number of the register bank to be switched to is stored here.
Any portion not used as the vector table can be used as program memory or data memory.
16-bit values can be written to the vector table. Therefore, branches can only be made within the base area.
Table 3-1. Vector Table
Vector Table Address
Interrupt Source
0003CH
Operand error
0003EH
BRK
00000H
Reset (RESET input)
00002H
NMI
00004H
WDT
00006H
INTP0
00008H
INTP1
0000AH
INTP2
0000CH
INTP3
0000EH
INTC00
00010H
INTC01
00012H
INTC10
00014H
INTC11
00016H
INTC20
00018H
INTC21
0001AH
INTC30
0001CH
INTP4
0001EH
INTP5
00020H
INTAD
00022H
INTSER1
00024H
INTSR1/INTCSI1
00026H
INTST1
00028H
INTCSI
0002AH
INTSER2
0002CH
INTSR2/INTCSI2
0002EH
INTST2
00032H
INTIE1
00034H
INTIE2
00036H
INTW
00038H
INTCSI3


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