SM89516B

8-Bit Micro-controller

64KB Flash

& 1KB RAM embedded

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

ISSFD-M087

Ver D SM89516B 08/07/2015

- 1 -

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