SM8958B Datasheet, PDF (8/49 Pages) SyncMOS Technologies,Inc – 256 bytes SRAM as standard 8052

Pin Description
40L
PDIP
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
44L
PLCC
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
44L
PQFP
39
40
41
42
43
44
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
Symbol
P4.2
P1.0/T2
P1.1/T2EX
P1.2/PWM0
P1.3/PWM1
P1.4
P1.5
P1.6/SCL
P1.7/SDA
RESET
P3.0/RXD
P4.3
P3.1/TXD
P3.2/INT0
P3.3/INT1
P3.4/T0
P3.5/T1
P3.6/WR
P3.7/RD
XTAL2
XTAL1
VSS
P4.0
P2.0/A8
P2.1/A9
P2.2/A10
P2.3/A11
P2.4/A12
P2.5/A13
P2.6/A14
P2.7/A15
PSEN
ALE
P4.1
EA
P0.7/AD7
P0.6/AD6
P0.5/AD5
P0.4/AD4
P0.3/AD3
P0.2/AD2
P0.1/AD1
P0.0/AD0
VDD
SM8958B
8-Bit Micro-controller
32KB Flash
& 1KB RAM embedded
I/O
Description
I/O Bit 2 of port 4
I/O Bit 0 of port 1 & Timer 2 external input clock
I/O Bit 1 of port 1 & Timer 2 capture trigger
I/O Bit 2 of port 1 & PWM Channel 0
I/O Bit 3 of port 1 & PWM Channel 1
I/O Bit 4 of port 1
I/O Bit 5 of port 1
I/O Bit 6 of port 1 & IIC SCL pin
I/O Bit 7 of port 1 & IIC SDA pin
I Reset pin
I/O Bit 0 of port 3 & Serial interface channel receive data
I/O Bit 3 of port 4
I/O Bit 1 of port 3 & Serial interface channel Transmit data
I/O Bit 2 of port 3 & Interrupt 0
I/O Bit 3 of port 3 & Interrupt 1
I/O Bit 4 of port 3 & Timer 0 external input
I/O Bit 5 of port 3 & Timer 1 external input
I/O Bit 6 of port 3 & external memory write
I/O Bit 7 of port 3 & external memory read
I/O Crystal output
I/O Crystal input
I Ground
I/O Bit 0 of port 4
I/O Bit 0 of port 2 & bit 8 of external memory address
I/O Bit 1 of port 2 & bit 9 of external memory address
I/O Bit 2 of port 2 & bit 10 of external memory address
I/O Bit 3 of port 2 & bit 11 of external memory address
I/O Bit 4 of port 2 & bit 12 of external memory address
I/O Bit 5 of port 2 & bit 13 of external memory address
I/O Bit 6 of port 2 & bit 14 of external memory address
I/O Bit 7 of port 2 & bit 15 of external memory address
O program storage enable
O address latch enable
I/O Bit 1 of port 4
I external access
I/O Bit 7 of port 0 & data/address bit 7 of external memory
I/O Bit 6 of port 0 & data/address bit 6 of external memory
I/O Bit 5 of port 0 & data/address bit 5 of external memory
I/O Bit 4 of port 0 & data/address bit 4 of external memory
I/O Bit 3 of port 0 & data/address bit 3 of external memory
I/O Bit 2 of port 0 & data/address bit 2 of external memory
I/O Bit 1 of port 0 & data/address bit 1 of external memory
I/O Bit 0 of port 0 & data/address bit 0 of external memory
I Power supply
Specifications subject to change without notice contact your sales representatives for the most recent information.
ISSFD-M085
Ver D SM8958B 08/07/2015
-8-