SN8P1602A datasheet(14/76 Pages) SONIX

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SN8P1602B

8-Bit Micro-Controller

SONiX TECHNOLOGY CO., LTD

Page 14

Version 1.1

3 ADDRESS SPACES

PROGRAM MEMORY (ROM)

OVERVIEW

The SN8P1602B provides the program memory up to 1024 * 16-bit to be addressed and is able to fetch instructions

through 10-bit wide PC (Program Counter). It can look up ROM data by using ROM code registers (R, Y, Z).

1-word reset vector addresses

1-word interrupt vector addresses

1K words general purpose area

5-word reserved area

All of the program memory is partitioned into three coding areas. The first area is located from 00H to 03H(The Reset

vector area), the second area is a reserved area 04H ~07H, the 3

rd area is for the interrupt vector and the user code

area from 0008H to 03FEH/0FFEH. The address 08H is the interrupt enter address point.

ROM

0000H

Reset vector

User reset vector

0001H

Jump to user start address

0002H

Jump to user start address

0003H

General purpose area

Jump to user start address

0004H

0005H

0006H

0007H

Reserved

0008H

Interrupt vector

User interrupt vector

0009H

User program

000FH

0010H

0011H

03FEH

General purpose area

End of user program

03FFH

Reserved

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