
3-15
PLCC
P
(
V
P
(
E
P
(
P
A L E
P S E N
P 2 . 7
(
P
X
E A
N C
(
P
G
( R X D )
P 3 . 0
N C
P0.7
( AD7)
P 2 . 6
P 2 . 5
( A 1 4 )
( A 1 3 )
P0.6
( AD6)
P0.5
( AD5)
P0.4
( AD4)
P
(
P
(
P
P
(
X
( I N T 0 )
( I N T 1 )
( T 0 )
P 3 . 2
P 3 . 3
P 3 . 4
( T X D )
P 3 . 1
( T 1 )
P 3 . 5
( A 1 5 )
(
P
(
P
(
P
(
P
(
P
N
2 3
1
R S T
I N D E X
N
3 4
3 3
3 2
3 1
4 2
4 3
4 0
3 9
3 8
3 7
3 6
3 5
4 1
6
5
4
4 4
3
2
2 6
2 5
2 8
2 7
1 81 92 0
2 4
2 12 2
7
8
9
1 0
1 1
1 2
1 3
1 4
1 5
1 6
1 7
2 9
3 0
P
P 1 . 5
P 1 . 6
P 1 . 7
Features
Compatible with MCS-51 Products
8K Bytes of Factory Programmable QuickFlash
Memory
Fully Static Operation: 0 Hz to 20 MHz
Three-Level Program Memory Lock
256 x 8-Bit Internal RAM
32 Programmable I/O Lines
Three 16-Bit Timer/Counters
Eight Interrupt Sources
Programmable Serial Channel
Low Power Idle and Power Down Modes
Description
The AT80F52 is a low-power, high-performance CMOS 8-bit microcomputer with 8K
bytes of QuickFlash memory. The device is manufactured using Atmel’s high density
nonvolatile memory technology and is compatible with the industry standard 80C51
and 80C52 instruction set and pinout. The on-chip QuickFlash allows custom codes to
be quickly programmed in the factory. By combining a versatile 8-bit CPU with Quick-
Flash on a monolithic chip, the Atmel AT80F52 is a powerful microcomputer which
provides a highly flexible and cost effective solution to many embedded control appli-
cations.
0980A-A–12/97
8-Bit
Microcontroller
with 8K Bytes
QuickFlash
Memory
AT80F52
PDIP
( T 2 )
E X )
P 1 . 0
P 1 . 1
P 1 . 2
P 1 . 3
P 1 . 4
P 1 . 5
P 1 . 6
P 1 . 7
V
C C
P0.0
P0.1
(T 2
( AD0)
( AD1)
( I N T 0 )
( I N T 1 )
( T 0 )
P 3 . 2
P 3 . 3
P 3 . 4
A L E
P S E N
P 2 . 7
( R D )
P 3 . 7
X TA L 2
X TA L 1
G N D
P 2 . 3
P 2 . 2
P 2 . 1
P 2 . 0
( A 1 1 )
(A 1 0 )
(A 9 )
(A 8 )
( T X D )
P 3 . 1
E A
( W R )
P 3 . 6
P 2 . 4
( A 1 2 )
( R X D )
P 3 . 0
P0.7
( AD7)
( T 1 )
P 3 . 5
P 2 . 6
P 2 . 5
( A 1 4 )
( A 1 3 )
R S T
P0.6
( AD6)
P0.5
( AD5)
P0.4
( AD4)
P0.3
( AD3)
P0.2
( AD2)
( A 1 5 )
2 0
1 9
1 8
1 7
1 6
1 5
1
2
3
4
5
6
7
8
9
1 0
1 1
1 2
1 3
1 4
2 1
2 2
2 3
2 4
2 5
2 6
4 0
3 9
3 8
3 7
3 6
3 5
3 4
3 3
3 2
3 1
3 0
2 9
2 8
2 7
Pin Configurations
TQFP
23
1
2
I N D E X
34
P
(
V
P
(
E
P
P
N
42
43
40
41
6
7
8
9
1 0
1 1
5
4
44
3
26
25
24
28
27
1819202122
N C
121314151617
29
30
39
3 83 7
3635
33
32
31
N C
A L E
P S E N
P 2 . 7
X
G
X
G
P
(
(
P
E A
(
P
( R X D )
P 3 . 0
P 0 . 7
( AD 7 )
P 2 . 6
P 2 . 5
( A 1 4 )
( A 1 3 )
P 0 . 6
( AD 6 )
P 0 . 5
( AD 5 )
P 0 . 4
( AD 4 )
P
(
P
(
P
(
( I N T 0 )
( I N T 1 )
( T 0 )
P 3 . 2
P 3 . 3
P 3 . 4
( T X D )
P 3 . 1
( T 1 )
P 3 . 5
( A 1 5 )
(
P
(
P
(
P
(
P
(
P
R S T
P
P 1 . 5
P 1 . 6
P 1 . 7
(continued)