at89ls51-16si ATMEL Corporation, at89ls51-16si Datasheet - Page 2

• Manufacturer Part Number: at89ls51-16si
• Description: At89ls51, Low-voltage Microcontroller With 4k Bytes In-system Programmable Flash
• Manufacturer: ATMEL Corporation

2. Pin Configurations
2.1
2.2
2
40-lead PDIP
44-lead TQFP
AT89LS51
(MOSI) P1.5
(MISO) P1.6
(RXD) P3.0
(INT0) P3.2
(INT1) P3.3
(SCK) P1.7
(TXD) P3.1
(T0) P3.4
(T1) P3.5
RST
NC
(MOSI) P1.5
(MISO) P1.6
(RXD) P3.0
(INT0) P3.2
(INT1) P3.3
(SCK) P1.7
(TXD) P3.1
(WR) P3.6
(RD) P3.7
(T0) P3.4
(T1) P3.5
1
2
3
4
5
6
7
8
9
10
11
XTAL2
XTAL1
GND
P1.0
P1.1
P1.2
P1.3
P1.4
RST
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
VCC
P0.0 (AD0)
P0.1 (AD1)
P0.2 (AD2)
P0.3 (AD3)
P0.4 (AD4)
P0.5 (AD5)
P0.6 (AD6)
P0.7 (AD7)
EA/VPP
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)
33
32
31
30
29
28
27
26
25
24
23
P0.4 (AD4)
P0.5 (AD5)
P0.6 (AD6)
P0.7 (AD7)
EA/VPP
NC
ALE/PROG
PSEN
P2.7 (A15)
P2.6 (A14)
P2.5 (A13)
2.3
2.4
44-lead PLCC
42-lead PDIP
(MOSI) P1.5
(MISO) P1.6
(RXD) P3.0
(INT0) P3.2
(INT1) P3.3
(SCK) P1.7
(TXD) P3.1
(T0) P3.4
(T1) P3.5
(INT0) P3.2
(INT1) P3.3
RST
(RXD) P3.0
(TXD) P3.1
(A10) P2.2
(A11) P2.3
(A12) P2.4
(A13) P2.5
(A14) P2.6
(A15) P2.7
(WR) P3.6
NC
PWRGND
(RD) P3.7
(A8) P2.0
(A9) P2.1
(T0) P3.4
(T1) P3.5
XTAL2
XTAL1
7
8
9
10
11
12
13
14
15
16
17
GND
RST
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
P1.7 (SCK)
P1.6 (MISO)
P1.5 (MOSI)
P1.4
P1.3
P1.2
P1.1
P1.0
VDD
PWRVDD
P0.0 (AD0)
P0.1 (AD1)
P0.2 (AD2)
P0.3 (AD3)
P0.4 (AD4)
P0.5 (AD5)
P0.6 (AD6)
P0.7 (AD7)
EA/VPP
ALE/PROG
PSEN
39
38
37
36
35
34
33
32
31
30
29
P0.4 (AD4)
P0.5 (AD5)
P0.6 (AD6)
P0.7 (AD7)
EA/VPP
NC
ALE/PROG
PSEN
P2.7 (A15)
P2.6 (A14)
P2.5 (A13)
3053B–MICRO–3/05