AT45DB642D datasheet(41/55 Pages) ATMEL

Part #	AT45DB642D

Description	64-megabit 2.7-volt Dual-interface DataFlash

PDF	55 Pages

Scroll/Zoom	100%

Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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41 / 55 page

3542F–DFLASH–09/06

AT45DB642D

22.1

Buffer Write

22.2

Buffer to Main Memory Page Program (Data from Buffer Programmed into Flash Page)

23. Read Operations

The following block diagram and waveforms illustrate the various read sequences available.

SI or I/O7 - I/O0

(INPUT)

CMD

Completes writing into selected buffer

X···X, BFA10-8

BFA7-0

n+1

Last Byte

BINARY PAGE SIZE

14 DON'T CARE + BFA9-BFA0

SI or I/O7 - I/O0

(INPUT)

CMD

PA12-5

PA4-0, XXX

Starts self-timed erase/program operation

XXXX XX

Each transition

represents 8 bits

n = 1st byte read

n+1 = 2nd byte read

BINARY PAGE SIZE

A22-A10 + 10 DON'T CARE BITS

FLASH MEMORY ARRAY

PAGE (1024/1056 BYTES)

BUFFER 2 (1024/1056 BYTES)

BUFFER 1 (1024/1056 BYTES)

I/O INTERFACE

MAIN MEMORY

PAGE TO

BUFFER 1

MAIN MEMORY

PAGE TO

BUFFER 2

MAIN MEMORY

PAGE READ

BUFFER 1

READ

BUFFER 2

READ

I/O7 - I/O0

AT45DB642D Datasheet(PDF) 41 Page - ATMEL Corporation

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