December 1998
Specifications subject to change without notice,contact your sales representatives for the most recent information.
4/15
Ver1.0
PID 2964 08/00
SyncMOS Technologies Inc.
SM2964
Pin Descriptions
40L
PDIP
Pin#
44L
LQFP
Pin#
44L
PQFP
Pin#
44L
PLCC
Pin#
Symbol
Active I/O
Names
1
40
40
2
T2/P1.0/FD0
i/o
bit 0 of port 1 & timer 2 & bit 0 of flash block address
2
41
41
3
T2EX/P1.1/FD1
i/o
bit 1 of port 1 & timer control & bit 1 of flash block address
3
42
42
4
P1.2/FD2
i/o
bit 2 of port 1 & bit 2 of flash/ext. memory address
4
43
43
5
P1.3/FD3
i/o
bit 3 of port 1 & bit 3 of flash/ext. memory address
5
44
44
6
P1.4/FD4
i/o
bit 4 of port 1 & bit 4 of flash/ext. memory address
6
1
1
7
P1.5/FD5
i/o
bit 5 of port 1 & bit 5 of flash/ext. memory address
7
2
2
8
P1.6/FD6
i/o
bit 6 of port 1 & bit 6 of flash/ext. memory address
8
3
3
9
P1.7/FD7
i/o
bit 7 of port 1 & bit 7 of flash/ext. memory address
9
4
4
10
RES
H
i
Reset
10
5
5
11
RXD/P3.0
i/o
bit 0 of port 3 & Receive data & flash block enable
11
7
7
13
TXD/P3.1
i/o
bit 1 of port 3 & Transmit data
12
8
8
14
#INT0/P3.2
L/ -
i/o
bit 2 of port 3 & low true interrupt 0
13
9
9
15
#INT1/P3.3
L/ -
i/o
bit 3 of port 3 & low true interrupt 1
14
10
10
16
T0/P3.4
i/o
bit 4 of port 3 & Timer 0
15
11
11
17
T1/P3.5
i/o
bit 5 of port 3 & Timer 1
16
12
12
18
#WR/P3.6
L/ -
i/o
bit 6 of port 3 & o/p enable to flash block (low enable)
17
13
13
19
#RD/P3.7/#FWE
L/ - /L
i/o
bit 7 of port 3 & write enable to flash block (low enable)
18
14
14
20
XTAL2
o
Crystal out
19
15
15
21
XTAL1
i
Crystal in
20
16
16
22
VSS
Sink Voltage, Ground
21
18
18
24
P2.0/FA8
i/o
bit 0 of port 2 & bit 8 of flash block address
22
19
19
25
P2.1/FA9
i/o
bit 1 of port 2 & bit 9 of flash block address
23
20
20
26
P2.2/FA10
i/o
bit 2 of port 2 & bit 10 of flash block address
24
21
21
27
P2.3/FA11
i/o
bit 3 of port 2 & bit 11 of flash block address
25
22
22
28
P2.4/FA12
i/o
bit 4 of port 2 & bit 12 of flash block address
26
23
23
29
P2.5/FA13
i/o
bit 5 of port 2 & bit 13 of flash block address
27
24
24
30
P2.6/FA14
i/o
bit 6 of port 2 & bit 14 of flash block address
28
25
25
31
P2.7/FA15
L/L
i/o
bit 7 of port 2 & bit 15 of flash block address
29
26
26
32
#PSEN/#FOE
- /L
o/i
program storage enable
30
27
27
33
ALE/#FCE
L
o/i
address latch enable
31
29
29
35
#EA
i
external access
32
30
30
36
P0.7/FA7
i/o
bit 7 of port 0 & data bit 7 of flash block
33
31
31
37
P0.6/FA6
i/o
bit 6 of port 0 & data bit 6 of flash block
34
32
32
38
P0.5/FA5
i/o
bit 5 of port 0 & data bit 5 of flash block
35
33
33
39
P0.4/FA4
i/o
bit 4 of port 0 & data bit 4 of flash block
36
34
34
40
P0.3/FA3
i/o
bit 3 of port 0 & data bit 3 of flash block
37
35
35
41
P0.2/FA2
i/o
bit 2 of port 0 & data bit 2 of flash block
38
36
36
42
P0.1/FA1
i/o
bit 1 of port 0 & data bit 1 of flash block
39
37
37
43
P0.0/FA0
i/o
bit 0 of port 0 & data bit 0 of flash block
40
38
38
44
VDD
Drive Voltage, +5 Vcc