AT89LP428-20MU ATMEL [ATMEL Corporation], AT89LP428-20MU Datasheet - Page 2

• Manufacturer Part Number: AT89LP428-20MU
• Description: 8-bit Microcontroller with 4K/8K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

1. Pin Configurations
1.1
1.2
2
XTAL2/P4.1
XTAL1/P4.0
INT0/P3.2
INT1/P3.3
XTAL2/P4.1
XTAL1/P4.0
AIN1/P2.5
AIN0/P2.4
T0/P3.4
INT0/P3.2
INT1/P3.3
CCD/P2.3
CCC/P2.2
RXD/P3.0
TXD/P3.1
RST/P3.6
28P3 – 28-lead PDIP
32A – 32-lead TQFP (Top View)
T0/P3.4
T1/P3.5
GND
P4.5
P4.4
AT89LP428/828
GND
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
P2.6/AIN2
P2.7/AIN3
P1.7/SCK
P1.6/MISO
P1.5/MOSI
P1.4/SS
P1.3
VCC
P1.2
P1.1/T2EX
P1.0/T2
P3.7
P2.0/CCA
P2.1/CCB
24
23
22
21
20
19
18
17
P1.5/MOSI
P1.4/SS
P1.3
P4.2
VCC
P4.3
P1.2
P1.1/T2EX
1.3
1.4
XTAL2/P4.1
XTAL1/P4.0
INT0/P4.3
INT1/P4.4
NOTE:
Bottom pad
should be
soldered to ground
XTAL2/P4.1
XTAL1/P4.0
T0/P3.4
INT0/P3.2
INT1/P3.3
32J – 32-lead PLCC
32M1-A – 32-pad MLF (Top View)
GND
P4.5
P4.4
T0/P3.4
T1/P3.5
GND
P4.5
P4.4
1
2
3
4
5
6
7
8
5
6
7
8
9
10
11
12
13
29
28
27
26
25
24
23
22
21
24
23
22
21
20
19
18
17
3654A–MICRO–8/09
P1.6/MISO
P1.5/MOSI
P1.4/SS
P1.3
P4.2
VCC
P4.3
P1.2
P1.1/T2EX
P1.5/MOSI
P1.4/SS
P1.3
P4.2
VDD
P4.3
P1.2
P1.1/T2EX