FlashFlex51 MCU
SST89C54 / SST89C58
Preliminary Specifications
PIN ASSIGNMENTS
P1.1 (T2 Ex)
P0.0 (AD0)
P0.1 (AD1)
P0.2 (AD2)
(T2) P1.0
(T2 Ex) P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
RST
(RXD) P3.0
(TXD) P3.1
(INT0#) P3.2
(INT1#) P3.3
(T0) P3.4
(T1) P3.5
(WR#) P3.6
(RD#) P3.7
XTAL2
XTAL1
VSS
1
2
3
4
5
6
7
40
39
38
37
36
35
34
VDD
P1.4
P1.3
P0.3 (AD3)
P1.0 (T2)
P0.1 (AD1)
P0.2 (AD2)
P0.3 (AD3)
P0.4 (AD4)
P0.5 (AD5)
P0.6 (AD6)
P0.7 (AD7)
EA#
ALE/PROG#
PSEN#
P2.7 (A15)
P2.6 (A14)
P2.5 (A13)
P2.4 (A12)
P2.3 (A11)
P2.2 (A10)
P2.1 (A9)
P2.0 (A8)
344 ILL F18.1
V
DD
NC
P0.0 (AD0)
P1.2
1
2
P0.4 (AD4)
P0.5 (AD5)
P0.6 (AD6)
P0.7 (AD7)
EA#
NC
ALE/PROG#
PSEN#
P2.7 (A15)
P2.6 (A14)
P2.5 (A13)
P1.5
P1.6
P1.7
RST
(RXD) P3.0
NC
(TXD) P3.1
(INT0#) P3.2
(INT1#) P3.3
(T0) P3.4
(T1) P3.5
44 43 42 41 40 39 38 37 36 35 34
33
1
2
3
4
5
6
7
8
9
10
11
32
31
30
40-Pin PDIP
8 Top View 33
32
9
10
11
12
13
14
15
16
17
18
19
20
31
30
29
28
27
26
25
24
23
22
21
3
4
5
6
7
44-Pin TQFP
Top View
29
28
27
26
25
24
23
12 13 14 15 16 17 18 19 20 21 22
NC
(A8) P2.0
(A9) P2.1
(A10) P2.2
(A11) P2.3
(WR#) P3.6
(RD#) P3.7
(A12) P2.4
XTAL2
XTAL1
V
SS
344 ILL F19.1
F
IGURE
1: P
IN
A
SSIGNMENTS FOR
40-P
IN
P
LASTIC
DIP
PI-P
ACKAGE
P1.1 (T2 Ex)
P1.0 (T2)
F
IGURE
2: P
IN
A
SSIGNMENTS FOR
44-P
IN
TQFP
TQJ-P
ACKAGE
P0.0 (AD0)
P0.1 (AD1)
P0.2 (AD2)
P0.3 (AD3)
8
9
10
P1.4
P1.3
P1.2
6
P1.5
P1.6
P1.7
RST
(RXD) P3.0
NC
(TXD) P3.1
(INT0#) P3.2
(INT1#) P3.3
(T0) P3.4
(T1) P3.5
7
8
9
10
11
12
13
14
15
16
5
4
3
2 1 44 43 42 41 40
39
38
37
36
P0.4 (AD4)
P0.5 (AD5)
P0.6 (AD6)
P0.7 (AD7)
EA#
NC
ALE/PROG#
PSEN#
P2.7 (A15)
P2.6 (A14)
P2.5 (A13)
V
DD
NC
11
12
13
14
15
16
44-Pin PLCC
Top View
35
34
33
32
31
30
17
29
18 19 20 21 22 23 24 25 26 27 28
(WR#) P3.6
(RD#) P3.7
XTAL2
XTAL1
NC
(A8) P2.0
(A9) P2.1
(A10) P2.2
(A11) P2.3
(A12) P2.4
V
SS
F
IGURE
3: P
IN
A
SSIGNMENTS FOR
44-P
IN
PLCC
NJ-P
ACKAGE
Note: NC pins must be left unconnected.
漏 2000 Silicon Storage Technology, Inc.
344 ILL F20.1
5
344-2 8/00