AT27C256R-90PI datasheet, PDF - EEWORLD Datasheet

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AT27C256R-90PI: Description32K X 8 OTPROM, 120 ns, PDSO28; Categorystorage storage; File Size176KB，9 Pages; ManufacturerAtmel (Microchip)

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AT27C256R-90PI Overview

32K X 8 OTPROM, 120 ns, PDSO28

AT27C256R-90PI Parametric

Parameter Name	Attribute value
Is it Rohs certified?	incompatible
Parts packaging code	DIP
package instruction	DIP, DIP28,.6
Contacts	28
Reach Compliance Code	unknow
ECCN code	EAR99
Is Samacsys	N
Maximum access time	90 ns
I/O type	COMMON
JESD-30 code	R-PDIP-T28
JESD-609 code	e0
length	36.95 mm
memory density	262144 bi
Memory IC Type	OTP ROM
memory width	8
Number of functions	1
Number of terminals	28
word count	32768 words
character code	32000
Operating mode	ASYNCHRONOUS
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
organize	32KX8
Output characteristics	3-STATE
Package body material	PLASTIC/EPOXY
encapsulated code	DIP
Encapsulate equivalent code	DIP28,.6
Package shape	RECTANGULAR
Package form	IN-LINE
Parallel/Serial	PARALLEL
Peak Reflow Temperature (Celsius)	225
power supply	5 V
Programming voltage	13 V
Certification status	Not Qualified
Maximum seat height	5.59 mm
Maximum standby current	0.0001 A
Maximum slew rate	0.02 mA
Maximum supply voltage (Vsup)	5.5 V
Minimum supply voltage (Vsup)	4.5 V
Nominal supply voltage (Vsup)	5 V
surface mount	NO
technology	CMOS
Temperature level	INDUSTRIAL
Terminal surface	Tin/Lead (Sn/Pb)
Terminal form	THROUGH-HOLE
Terminal pitch	2.54 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	30
width	15.24 mm
Base Number Matches	1

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AT27C256R

Features

•

Fast Read Access Time - 45 ns

Low Power CMOS Operation

100

µA

max. Standby

20 mA max. Active at 5 MHz

JEDEC Standard Packages

28-Lead 600-mil PDIP

32-Lead PLCC

28-Lead TSOP and SOIC

10% Supply

High Reliability CMOS Technology

2,000V ESD Protection

200 mA Latchup Immunity

Rapid

™

Programming Algorithm - 100

µs/byte

(typical)

CMOS and TTL Compatible Inputs and Outputs

Integrated Product Identification Code

Commercial and Industrial Temperature Ranges

256K (32K x 8)

OTP

CMOS

EPROM

Description

The AT27C256R is a low-power, high performance 262,144 bit one-time programma-

ble read only memory (OTP EPROM) organized 32K by 8 bits. It requires only one

5V power supply in normal read mode operation. Any byte can be accessed in less

than 45 ns, eliminating the need for speed reducing WAIT states on high performance

microprocessor systems.

Atmel’s scaled CMOS technology provides low active power consumption, and fast

programming. Power consumption is typically only 8 mA in Active Mode and less

than 10

µA

in Standby.

(continued)

Pin Configurations

Pin Name

A0 - A14

O0 - O7

Function

Addresses

Outputs

Chip Enable

Output Enable

No Connect

PDIP, SOIC Top View

AT27C256R

PLCC Top View

TSOP Top View

Type 1

Note: PLCC Package Pins 1 and

17 are DON’T CONNECT.

0014G

3-125

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