SM8958B Datasheet, PDF (10/49 Pages) SyncMOS Technologies,Inc – 256 bytes SRAM as standard 8052

Note: Special Function Registers reset values and description for SM8958B.
SM8958B
8-Bit Micro-controller
32KB Flash
& 1KB RAM embedded
Register
Location Reset value
Description
1
P0
80H
FFH
Port 0
2
SP
81H
07H
Stack Pointer
3
DPL
82H
00H
Data Pointer 0 low byte
4
DPH
83H
00H
Data Pointer 0 high byte
5
RCON
85H
00H
RAM Control
6
DBANK
86H
01H
Data RAM bank select
7
PCON
87H
00H
Power Control
8
TCON
88H
00H
Timer/Counter Control
9
TMOD
89H
00H
Timer Mode Control
10
TL0
8AH
00H
Timer 0, low byte
11
TL1
8BH
00H
Timer 1, low byte
12
TH0
8CH
00H
Timer 0, high byte
13
TH1
8DH
00H
Timer 1, high byte
14
P1
90H
FFH
Port 1
15
SCON
98H
00H
Serial Port 0, Control Register
16
SBUF
99H
00H
Serial Port 0, Data Buffer
17
P1CON
9BH
00H
P1 control
18
WDTC
9FH
00H
Watch Dog Timer Control
19
P2
A0H
FFH
Port 2
20
IE
A8H
00H
Interrupt Enable
21
IE1
A9H
00H
Interrupt Enable 1
22
IFR
AAH
00H
Interrupt Flag for read
23
P3
B0H
FFH
Port 3
24
PWMD0
B3H
00H
PWM Data 0
25
PWMD1
B4H
00H
PWM Data 1
26
IP
B8H
00H
Interrupt Priority
27
IP1
B9H
00H
Interrupt Priority 1
28
SCONF
BFH
02H
System Control Register
29
TWSIS
C0H
00H
TWSI Status
30
TWSIA
C1H
A0H
TWSI Address
31
TWSIC1
C2H
01H
TWSI Control 1
32
TWSIC2
C3H
00H
TWSI Control 2
33
TWSITXD
C4H
FFH
TWSI Transmit Data
34 TWSIRXD
C5H
00H
TWSI Receive Data
35
T2CON
C8H
00H
Timer 2 Control
36
T2MOD
C9H
00H
Timer 2 Mode
37
RCAP2L
CAH
00H
Timer2 Capture Low
38
RCAP2H
CBH
00H
Timer2 Capture High
39
TL2
CCH
00H
Timer 2, low byte
40
TH2
CDH
00H
Timer 2, high byte
41
PSW
D0H
00H
Program Status Word
Specifications subject to change without notice contact your sales representatives for the most recent information.
ISSFD-M085
Ver D SM8958B 08/07/2015
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