SM8958BW44JP 参数 Datasheet PDF下载

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SM8958B

8-Bit Micro-controller

32KB Flash

& 1KB RAM embedded

Product List.................................................................................................................................................................................... 3

Description..................................................................................................................................................................................... 3

Ordering Information.....................................................................................................................................................................3

Features......................................................................................................................................................................................... 3

Pin Configuration...........................................................................................................................................................................4

Block Diagram............................................................................................................................................................................... 7

Special Function Register (SFR)................................................................................................................................................9

Function Description...................................................................................................................................................................12

1.

General Features......................................................................................................................................................... 12

1.1

Embedded Flash.................................................................................................................................................12

1.2

IO Pads.................................................................................................................................................................12

1.3

System Control Register (SCONF)..................................................................................................................12

2.

Instruction Set............................................................................................................................................................... 13

3.

Memory Structure.........................................................................................................................................................17

3.1

Program Memory................................................................................................................................................ 17

3.2

Data Memory....................................................................................................................................................... 18

3.3

Data memory - lower 128 byte (00h to 7Fh)...................................................................................................18

3.4

Data memory - higher 128 byte (80h to FFh).................................................................................................18

3.5

Data memory - Expanded 768 bytes ($0000 to $02FF)............................................................................... 18

4.

CPU Engine...................................................................................................................................................................22

4.1

Accumulator.........................................................................................................................................................22

4.2

B Register............................................................................................................................................................ 22

4.3

Program Status Word.........................................................................................................................................23

4.4

Stack Pointer....................................................................................................................................................... 23

4.5

Data Pointer.........................................................................................................................................................23

5.

GPIO...............................................................................................................................................................................24

6.

Timer 0 and Timer 1..................................................................................................................................................... 25

6.1

Timer/counter mode control register (TMOD)................................................................................................ 25

6.2

Timer/counter control register (TCON)............................................................................................................26

6.3

Mode 0 (13-bit Counter/Timer)......................................................................................................................... 26

6.4

Mode 1 (16-bit Counter/Timer)......................................................................................................................... 27

6.5

Mode 2 (8-bit auto-reload Counter/Timer)...................................................................................................... 27

6.6

Mode 3 (Timer 0 acts as two independent 8 bit Timers / Counters)...........................................................27

7.

Timer 2........................................................................................................................................................................... 29

7.1

Capture mode......................................................................................................................................................30

7.2

Auto-reload (Up or Down Counter).................................................................................................................. 31

7.3

Programmable clock out....................................................................................................................................32

8.

Serial interface

–

UART...............................................................................................................................................34

8.1

Serial interface.................................................................................................................................................... 34

8.1.1

Mode 0........................................................................................................................................................ 35

8.1.2

Mode 1........................................................................................................................................................ 35

8.1.3

Mode 2........................................................................................................................................................ 36

8.1.4

Mode 3........................................................................................................................................................ 36

8.2

Multiprocessor Communication of Serial Interface........................................................................................36

8.3

Baud Rate Generator......................................................................................................................................... 37

8.3.1

Serial interface Mode 0............................................................................................................................ 37

8.3.2

Serial interface Mode 2............................................................................................................................ 37

8.3.3

Serial interface Mode 1 and 3................................................................................................................. 37

9.

Interrupt..........................................................................................................................................................................38

10.

Watch Dog Timer..........................................................................................................................................................40

11.

Power Management Unit.............................................................................................................................................42

11.1

Idle mode............................................................................................................................................................. 42

11.2

Power Down mode............................................................................................................................................. 42

12.

Pulse Width Modulation (PWM)................................................................................................................................. 44

13.

Two-Wire Series Interface (TWSI).............................................................................................................................46

Operating Conditions................................................................................................................................................................. 49

Specifications subject to change without notice contact your sales representatives for the most recent information.

ISSFD-M085

Ver A SM8958B 3/7/2014

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