SN8P2501A 参数 Datasheet PDF下载

SN8P2501A

8-Bit Micro-Controller

Table of Content

AMENDENT HISTORY ................................................................................................................. 1

1

1.1

1.2

1.3

1.4

PRODUCT OVERVIEW ..................................................................................................... 6

SYSTEM BLOCK DIAGRAM.............................................................................................. 7

PIN ASSIGNMENT............................................................................................................. 8

PIN DESCRIPTIONS ......................................................................................................... 8

PIN CIRCUIT DIAGRAMS.................................................................................................. 9

2

CENTRAL PROCESSOR UNIT (CPU) ............................................................................ 10

2.1

MEMORY MAP ................................................................................................................ 10

2.1.1

PROGRAM MEMORY (ROM)................................................................................... 10

2.1.2

DATA MEMORY (RAM) ............................................................................................ 17

2.1.3

CODE OPTION TABLE............................................................................................. 18

2.1.4

SYSTEM REGISTER ................................................................................................ 19

2.2

ACCUMULATOR.............................................................................................................. 22

2.3

PROGRAM FLAG ............................................................................................................ 23

2.3.1

RESET FLAG............................................................................................................ 23

2.3.2

CARRY FLAG ........................................................................................................... 23

2.3.3

DECIMAL CARRY FLAG .......................................................................................... 23

2.3.4

ZERO FLAG.............................................................................................................. 23

2.4

PROGRAM COUNTER .................................................................................................... 24

2.4.1

ONE ADDRESS SKIPPING ...................................................................................... 24

2.4.2

MULTI-ADDRESS JUMPING.................................................................................... 25

2.5

ADDRESSING MODE...................................................................................................... 26

2.5.1

IMMEDIATE ADDRESSING MODE.......................................................................... 26

2.5.2 ........................................................................................................................................ 26

2.5.3

DIRECTLY ADDRESSING MODE ............................................................................ 26

2.5.4 ........................................................................................................................................ 26

2.5.5

INDIRECTLY ADDRESSING MODE ........................................................................ 26

2.6

STACK OPERATIONS..................................................................................................... 27

2.6.1

OVERVIEW............................................................................................................... 27

2.6.2

STACK REGISTERS ................................................................................................ 28

2.6.3

STACK OPERATION EXAMPLE .............................................................................. 29

SONiX TECHNOLOGY CO., LTD

Page 2

Preliminary Version 0.2