SM39R08A5
8-Bit Micro-controller
with 8KB Flash
& 256B RAM embedded
Specifications subject to change without notice contact your sales representatives for the most recent information.
ISSFD-M067 Ver.A SM39R08A5 02/2013
-1-
Table of Contents
Product List.......................................................................................................................................................................... 3
Description ........................................................................................................................................................................... 3
Features............................................................................................................................................................................... 3
Pin Configuration ................................................................................................................................................................. 4
Block Diagram...................................................................................................................................................................... 5
Pin Description..................................................................................................................................................................... 6
Special Function Register (SFR) ......................................................................................................................................... 7
Function Description .......................................................................................................................................................... 10
1.General Features ........................................................................................................................................................ 10
1.1.Embedded Flash .......................................................................................................................................... 10
1.2.IO Pads ........................................................................................................................................................ 10
1.3.Instruction timing Selection .......................................................................................................................... 10
1.4.The Clock Output Selection ......................................................................................................................... 10
1.5.RESET ..........................................................................................................................................................11
1.5.1.Hardware RESET function...............................................................................................................11
1.5.2.Software RESET function ................................................................................................................11
1.5.3.Reset status .....................................................................................................................................11
1.5.4.Time Access Key register (TAKEY)................................................................................................. 12
1.5.5.Software Reset register (SWRES).................................................................................................. 12
1.5.6.Example of software reset .............................................................................................................. 12
1.6.Clocks .......................................................................................................................................................... 12
2.Instruction Set ............................................................................................................................................................. 13
3.Memory Structure ........................................................................................................................................................ 17
3.1.Program Memory ......................................................................................................................................... 17
3.2.Data Memory................................................................................................................................................ 18
3.2.1.Data memory - lower 128 byte (00h to 7Fh) ................................................................................... 18
3.2.2.Data memory - higher 128 byte (80h to FFh) ................................................................................. 18
4.CPU Engine................................................................................................................................................................. 19
4.1.Accumulator ................................................................................................................................................. 19
4.2.B Register .................................................................................................................................................... 19
4.3.Program Status Word................................................................................................................................... 20
4.4.Stack Pointer ................................................................................................................................................ 20
4.5.Data Pointer ................................................................................................................................................. 20
4.6.Data Pointer 1 .............................................................................................................................................. 21
4.7.Interface control register .............................................................................................................................. 21
5.GPIO............................................................................................................................................................................ 22
6.Timer 0 and Timer 1 .................................................................................................................................................... 23
6.1.Timer/counter mode control register (TMOD) .............................................................................................. 23
6.2.Timer/counter control register (TCON) ........................................................................................................ 24
6.3.T0、T1 signal swapping............................................................................................................................... 24
7.Serial interface ............................................................................................................................................................ 25
7.1.Mode 0 ......................................................................................................................................................... 26
7.2.Mode 1 ......................................................................................................................................................... 26
7.3.Mode 2 ......................................................................................................................................................... 27
7.4.Mode 3 ......................................................................................................................................................... 27
7.5.Multiprocessor communication .................................................................................................................... 27
7.6.Baud rate generator ..................................................................................................................................... 28
8.Watchdog timer ........................................................................................................................................................... 29
9.Interrupt ....................................................................................................................................................................... 32
10.Power Management Unit............................................................................................................................................. 37
10.1.Idle mode ..................................................................................................................................................... 37
10.2.Stop mode .................................................................................................................................................... 37
11.PWM - Pulse Width Modulation .................................................................................................................................. 38
12.IIC function .................................................................................................................................................................. 41
