3

4Mb Smart 3 Boot Block Flash Memory

Micron Technology, Inc., reserves the right to change products or specifications without notice.

F45_3.p65 – Rev. 3, Pub. 12/01

©2001, Micron Technology, Inc.

4Mb

SMART 3 BOOT BLOCK FLASH MEMORY

FUNCTIONAL BLOCK DIAGRAM

16KB Boot Block

8KB Parameter Block

8KB Parameter Block

96KB Main Block

128KB Main Block

128KB Main Block

Y - Select Gates

Sense Amplifiers

Write/Erase-Bit

Compare and Verify

Addr.

Buffer/

Latch

Power

(Current)

Control

Addr.

Counter

Command

Execution

Logic

I/O

Control

Logic

Switch/

Pump

Status

Register

Identification

Register

Y -

Decoder

128KB Main Block

Output

Buffer

Input

Buffer

State

Machine

A0–A17/(A18)

CE#

OE#

WE#

RP#

DQ15

8

8

7

DQ0–DQ7

16

8

18 (19)

7

A-1

9

(10)

9

8

Output

Buffer

Output

Buffer

Input

Buffer

Input

Buffer

Input Data

Latch/Mux

7

A9

WP#

NOTE: 1. Does not apply to MT28F004B3.