SMBP2501BPB datasheet(4/107 Pages) SONIX

4 / 107 page

SN8P2501B

8-Bit Micro-Controller

SONiX TECHNOLOGY CO., LTD

Page 4

Version 2.1

Table of Content

AMENDMENT HISTORY ............................................................................................................................ 2

PRODUCT OVERVIEW......................................................................................................................... 7

1.1

FEATURES ........................................................................................................................................ 7

1.2

SYSTEM BLOCK DIAGRAM .......................................................................................................... 8

1.3

PIN ASSIGNMENT ........................................................................................................................... 9

1.4

PIN DESCRIPTIONS....................................................................................................................... 10

1.5

PIN CIRCUIT DIAGRAMS............................................................................................................. 11

CENTRAL PROCESSOR UNIT (CPU) .............................................................................................. 12

2.1

MEMORY MAP............................................................................................................................... 12

2.1.1

PROGRAM MEMORY (ROM)............................................................................................... 12

2.1.1.1

RESET VECTOR (0000H) .................................................................................................. 13

2.1.1.2

INTERRUPT VECTOR (0008H)......................................................................................... 14

2.1.1.3

LOOK-UP TABLE DESCRIPTION.................................................................................... 16

2.1.1.4

JUMP TABLE DESCRIPTION ........................................................................................... 18

2.1.1.5

CHECKSUM CALCULATION........................................................................................... 20

2.1.2

CODE OPTION TABLE.......................................................................................................... 21

2.1.3

DATA MEMORY (RAM) ....................................................................................................... 22

2.1.4

SYSTEM REGISTER .............................................................................................................. 23

2.1.4.1

SYSTEM REGISTER TABLE ............................................................................................ 23

2.1.4.2

SYSTEM REGISTER DESCRIPTION ............................................................................... 23

2.1.4.3

BIT DEFINITION of SYSTEM REGISTER ....................................................................... 24

2.1.4.4

ACCUMULATOR ............................................................................................................... 25

2.1.4.5

PROGRAM FLAG ............................................................................................................... 26

2.1.4.6

PROGRAM COUNTER....................................................................................................... 27

2.1.4.7

Y, Z REGISTERS................................................................................................................. 30

2.1.4.8

R REGISTERS ..................................................................................................................... 31

2.2

ADDRESSING MODE .................................................................................................................... 32

2.2.1

IMMEDIATE ADDRESSING MODE .................................................................................... 32

2.2.2

DIRECTLY ADDRESSING MODE ....................................................................................... 32

2.2.3

INDIRECTLY ADDRESSING MODE ................................................................................... 32

2.3

STACK OPERATION...................................................................................................................... 33

2.3.1

OVERVIEW ............................................................................................................................. 33

2.3.2

STACK REGISTERS............................................................................................................... 34

2.3.3

STACK OPERATION EXAMPLE.......................................................................................... 35

RESET ..................................................................................................................................................... 36

3.1

OVERVIEW ..................................................................................................................................... 36

3.2

POWER ON RESET......................................................................................................................... 37

3.3

WATCHDOG RESET...................................................................................................................... 37

3.4

BROWN OUT RESET ..................................................................................................................... 38

3.4.1

THE SYSTEM OPERATING VOLTAGE .............................................................................. 39

3.4.2

LOW VOLTAGE DETECTOR (LVD) ................................................................................... 39

3.4.3

BROWN OUT RESET IMPROVEMENT............................................................................... 41

3.5

EXTERNAL RESET ........................................................................................................................ 42

3.6

EXTERNAL RESET CIRCUIT ....................................................................................................... 42

3.6.1

Simply RC Reset Circuit .......................................................................................................... 42

3.6.2

Diode & RC Reset Circuit ........................................................................................................ 43

SMBP2501BPB Datasheet(PDF) 4 Page - SONiX Technology Company

SMBP2501BPB Datasheet(HTML) 4 Page - SONiX Technology Company

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL