Datasheet > AT87LV55

AT87LV55

更新时间： 2024-09-21 08:38:43

品牌	Logo	应用领域
爱特美尔 - ATMEL		微控制器
页数	文件大小	规格书
27页	351K
描述
8-bit Microcontroller with 20K Bytes QuickFlash?

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数据手册

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AT87LV55 数据手册

Features

• Compatible with MCS-51^™Products

• 20K Bytes of One-time Programmable QuickFlash Memory

• 2.7V to 5.5V Operating Range

• Fully Static Operation: 0 Hz to 16 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

• Interrupt Recovery from Power Down

• Hardware Watchdog Timer

8-bit

Microcontroller

with 20K Bytes

QuickFlash^®

• Dual Data Pointer

• Power-off Flag

Description

The AT87LV55 is a low-voltage, high-performance CMOS 8-bit microcomputer with

20K bytes of QuickFlash one-time programmable (OTP) read only memory and 256

bytes of RAM. The device is manufactured using Atmel’s high-density nonvolatile

memory technology and is compatible with the industry standard MCS-51 instruction

set and pinout. The on-chip QuickFlash allows the program memory to be user pro-

(continued)

AT87LV55

Preliminary

Pin Configurations

PDIP

(T2) P1.0

(T2EX) P1.1

P1.2

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

P1.3

P1.4

P1.5

TQFP

P1.6

P1.7

RST

(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

XTAL2 18

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)

P1.5

P1.6

33 P0.4 (AD4)

32 P0.5 (AD5)

31 P0.6 (AD6)

30 P0.7 (AD7)

29 EA/VPP

P1.7

RST

(RXD) P3.0

XTAL1 19

28 NC

GND 20

(TXD) P3.1

(INT0) P3.2

(INT1) P3.3

27 ALE/PROG

26 PSEN

25 P2.7 (A15)

24 P2.6 (A14)

23 P2.5 (A13)

PLCC

(T0) P3.4 10

(T1) P3.5 11

P1.5

P1.6

P1.7

39 P0.4 (AD4)

38 P0.5 (AD5)

37 P0.6 (AD6)

36 P0.7 (AD7)

35 EA/VPP

34 NC

RST 10

(RXD) P3.0 11

NC 12

(TXD) P3.1 13

(INT0) P3.2 14

(INT1) P3.3 15

(T0) P3.4 16

(T1) P3.5 17

33 ALE/PROG

32 PSEN

31 P2.7 (A15)

30 P2.6 (A14)

29 P2.5 (A13)

Rev. 1609A–04/00

12 3 4 5 6 7...27

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