AT45DB642 datasheet(1/37 Pages) ATMEL

Part #	AT45DB642

Description	64-megabit 2.7-volt Only Dual-interface DataFlash

PDF	37 Pages

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Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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1

Features

• Single 2.7V - 3.6V Supply

• Dual-interface Architecture

– Dedicated Serial Interface (SPI Modes 0 and 3 Compatible)

– Dedicated Parallel I/O Interface (Optional Use)

• Page Program Operation

– Single Cycle Reprogram (Erase and Program)

– 8192 Pages (1056 Bytes/Page) Main Memory

• Supports Page and Block Erase Operations

• Two 1056-byte SRAM Data Buffers – Allows Receiving of Data

while Reprogramming the Flash Array

• Continuous Read Capability through Entire Array

– Ideal for Code Shadowing Applications

• Low-power Dissipation

– 4 mA Active Read Current Typical

– 2 µA CMOS Standby Current Typical

• 20 MHz Maximum Clock Frequency – Serial Interface

• 5 MHz Maximum Clock Frequency – Parallel Interface

• Hardware Data Protection

• Commercial and Industrial Temperature Ranges

Description

The AT45DB642 is a 2.7-volt only, dual-interface Flash memory ideally suited for a

wide variety of digital voice-, image-, program code- and data-storage applications. The

dual-interface of the AT45DB642 allows a dedicated serial interface to be connected to a

DSP and a dedicated parallel interface to be connected to a microcontroller or vice versa.

64-megabit

2.7-volt Only

Dual-interface

DataFlash

®

AT45DB642

Pin Configurations

Pin Name

Function

CS

Chip Select

SCK/CLK

Serial Clock/Clock

SI

Serial Input

SO

Serial Output

I/O7 - I/O0

Parallel Input/Output

WP

Hardware Page Write Protect Pin

RESET

Chip Reset

RDY/BUSY

Ready/Busy

SER/PAR

Serial/Parallel Interface Control

DataFlash Card

(1)

Note:

1. See AT45DCB008 Datasheet.

76 54321

TSOP Top View

Type 1

Note:

*Optional Use – See pin description

text for connection information.

1

2

3

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5

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8

9

10

11

12

13

14

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18

19

20

40

39

38

37

36

35

34

33

32

31

30

29

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27

26

25

24

23

22

21

NC

RDY/BUSY

RESET

WP

NC

VCC

GND

NC

CS

SCK/CLK

SI*

SO*

NC

I/O7*

I/O6*

I/O5*

I/O4*

VCCP*

GNDP*

I/O3*

I/O2*

I/O1*

I/O0*

SER/PAR*

NC

Rev. 1638F–DFLSH–09/02

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Manufacturer	Part #	Datasheet	Description
ATMEL Corporation	AT45DB642	84Kb / 5P	8-megabyte, 4-megabyte, and 2-megabyte 2.7-volt Only DataFlash Cards
	AT45DB642D	1Mb / 55P	64-megabit 2.7-volt Dual-interface DataFlash
	AT45DB642D	1Mb / 55P	64-megabit 2.7-volt Dual-interface DataFlash
	AT45DB642D	1Mb / 58P	64-megabit 2.7-volt Dual-interface DataFlash
	AT45DB642D-CNU	1Mb / 55P	64-megabit 2.7-volt Dual-interface DataFlash

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Manufacturer	Part #	Datasheet	Description
ATMEL Corporation	AT45DB021	201Kb / 18P	2-Megabit 2.7-volt Only Serial DataFlash
	AT45DB321B	230Kb / 32P	32-megabit 2.7-volt Only DataFlash
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	AT45DB642D	1Mb / 55P	64-megabit 2.7-volt Dual-interface DataFlash
	AT45DB021B	261Kb / 33P	2-megabit 2.7-volt Only DataFlash
	AT45DB642D	1Mb / 55P	64-megabit 2.7-volt Dual-interface DataFlash
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