EEWORLDEEWORLDEEWORLD

Part Number

Search

AT27C520-70

Description
512K 64K x 8 Multiplexed Addresses/ Outputs OTP EPROM
File Size92KB,10 Pages
ManufacturerAtmel (Microchip)
Download Datasheet View All

AT27C520-70 Overview

512K 64K x 8 Multiplexed Addresses/ Outputs OTP EPROM

Features
8-Bit Multiplexed Addresses/Outputs
Fast Read Access Time - 70 ns
Low Power CMOS Operation
– 20 mA max. Active at 5 MHz
20-Lead TSSOP Package
20-Lead SOIC Package
28-Lead TSOP Package
5V
±
10% Supply
High Reliability CMOS Technology
– 2,000V ESD Protection
– 200 mA Latchup Immunity
Rapid
Programming Algorithm - 50
µ
s/byte (typical)
CMOS and TTL Compatible Inputs and Outputs
Integrated Product Identification Code
Commercial and Industrial Temperature Range
Description
The AT27C520 is a low-power, high performance 524,288 bit one-time programmable
read only memory (OTP EPROM) organized 64K by 8 bits. It incorporates latches for
the 8 lower order address bits to multiplex with the 8 data bits. This minimizes system
chip count, reduces cost, and simplifies the design of multiplexed bus systems. It
requires only one 5V power supply in normal read mode operation. Any byte can be
accessed in less than 70 ns, eliminating the need for speed reducing WAIT states on
high performance microprocessor systems.
Atmel’s scaled CMOS technology provides high speed, lower active power consump-
tion, and significantly faster programming. Power consumption is typically only 8 mA
in Active Mode.
The AT27C520 is available in 173 mil, 20-pin TSSOP; 300 mil, 20-pin SOIC; and 28-
pin TSOP, one-time programmable (OTP) plastic packages.
(continued)
512K (64K x 8)
Multiplexed
Addresses/
Outputs
OTP EPROM
AT27C520
Pin Configurations
Pin Name
A8 - A15
AD0 - AD7
OE /V
PP
ALE
Function
Addresses
Addresses/Outputs
Output Enable/V
PP
Address Latch Enable
TSOP Top View
A10
NC
NC
A12
A14
ALE
VCC
OE/VPP
A15
A13
A11
NC
NC
A9
22
23
24
25
26
27
28
1
2
3
4
5
6
7
21
20
19
18
17
16
15
14
13
12
11
10
9
8
A8
NC
NC
AD1
AD3
AD5
AD7
GND
AD6
AD4
AD2
NC
NC
AD0
TSSOP Top View
A10
A12
A14
ALE
VCC
OE/VPP
A15
A13
A11
A9
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
A8
AD1
AD3
AD5
AD7
GND
AD6
AD4
AD2
AD0
SOIC Top View
OE/VPP
A15
A13
A11
A9
AD0
AD2
AD4
AD6
GND
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
VCC
ALE
A14
A12
A10
A8
AD1
AD3
AD5
AD7
Rev. 0752C-C–01/98
1
Is there any need for TrustZone project development?
I have been playing around with TrustZone and now want to take on some TrustZone related projects. There is a ready-made solution. My QQ number is [color=#000][font=Tahoma][size=3]2027205868. [/size][...
trustzone ARM Technology
Please help me find a program. Urgent!!!
I use keil c51 to program, the program is in the attachment, please help me, it won't compile....
kiss66521 Embedded System
FPGA Tutorial from National Taiwan University.rar
FPGA Tutorial from National Taiwan University.rar...
雷北城 FPGA/CPLD
vxworks begging for expert guidance
I just joined the company, and the company assigned me a task to investigate the syntax of Vxworks in preparation for future project migration. I spent two days researching and found that the integrat...
ljz1023 Real-time operating system RTOS
The waveform of the PSIM simulation circuit is inconsistent with the data
The waveform of the PSIM simulation circuit is inconsistent with that in the data. According to the data, the waveform will be distorted when the input signal frequency is 10K and 100K. As shown in th...
QWE4562009 Analog electronics
Please help, why can't this program enter the interrupt service routine?
#include "stm32f10x_lib.h"void RCC_Configuration(void); void GPIO_Configuration(void); void NVIC_Configuration(void); void EXIT_Configuration(void);int main(void) {RCC_Configuration();NVIC_Configurati...
cainana123456 stm32/stm8

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 254  590  903  1079  1640  6  12  19  22  34 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号