AT89LV51_14 Datasheet, PDF (1/16 Pages) ATMEL Corporation – 4K Bytes of Reprogrammable Flash Memory

Features
• Compatible with MCS-51™ Products
• 4K Bytes of Reprogrammable Flash Memory
– Endurance: 1,000 Write/Erase Cycles
• 2.7V to 6V Operating Range
• Fully Static Operation: 0 Hz to 12 MHz
• Three-Level Program Memory Lock
• 128 x 8-Bit Internal RAM
• 32 Programmable I/O Lines
• Two 16-Bit Timer/Counters
• Six Interrupt Sources
• Programmable Serial Channel
• Low Power Idle and Power Down Modes
Description
The AT89LV51 is a low-voltage, high-performance CMOS 8-bit microcomputer with
4K bytes of Flash Programmable and Erasable Read Only Memory. The device is
manufactured using Atmel’s high density nonvolatile memory technology and is com-
patible with the industry standard MCS-51™ instruction set and pinout. The on-chip
Flash allows the program memory to be reprogrammed in-system or by a conven-
tional nonvolatile memory programmer. By combining a versatile 8-bit CPU with Flash
on a monolithic chip, the Atmel AT89LV51 is a powerful microcomputer which pro-
vides a highly flexible and cost effective solution to many embedded control applica-
tions. The AT89LV51 operates at 2.7 volts up to 6.0 volts.
Pin Configurations
(continued)
PDIP
TQFP
INDEX
CORNER
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
4 44 ₃₄ 24 ₁₄ 03 ₉3 83 ₇3 63 ₅₃ 4
1
33
2
32
3
31
4
30
5
29
6
28
7
27
8
26
9
25
10
24
11
23
1
21
31
41
51
61
71
1
8
9
2
02
12
2
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)
P1.0 1
P1.1 2
P1.2 3
P1.3 4
P1.4 5
P1.5 6
P1.6 7
P1.7 8
RST 9
(RXD) P3.0 10
(TXD) P3.1 11
(INT0) P3.2 12
(INT1) P3.3 13
(T0) P3.4 14
(T1) P3.5 15
(WR) P3.6 16
(RD) P3.7 17
X TA L 2 1 8
X TA L 1 1 9
GND 20
40 VCC
39 P0.0 (AD0)
38 P0.1 (AD1)
37 P0.2 (AD2)
36 P0.3 (AD3)
35 P0.4 (AD4)
34 P0.5 (AD5)
33 P0.6 (AD6)
32 P0.7 (AD7)
31 EA/VPP
30 ALE/PROG
29 PSEN
28 P2.7 (A15)
27 P2.6 (A14)
26 P2.5 (A13)
25 P2.4 (A12)
24 P2.3 (A11)
23 P2.2 (A10)
22 P2.1 (A9)
21 P2.0 (A8)
PLCC
INDEX
CORNER
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
6 4 2 44 42 40
7 ^{5 3 1 43 4139}
8
38
9
37
10
36
11
35
12
34
13
33
14
32
15
31
16
30
11781 _{92 02 12 22 32 42 52 62 72289}
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)
8-Bit
Microcontroller
with 4K Bytes
Flash
AT89LV51
Not Recommended
for New Designs.
Use AT89LS51.
0303D-D–12/97
4-45