29F4000 Просмотр технического описания (PDF) - Macronix International

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29F4000

4M-BIT [512KX8] CMOS EQUAL SECTOR FLASH MEMORY

Macronix International 

MX29F4000

AUTOMATIC CHIP ERASE TIMING WAVEFORM

All data in chip are erased. External erase verification is

not required because data is erased automatically by

internal control circuit. Erasure completion can be

verified by DATA polling and toggle bit checking after

automatic erase starts. Device outputs 0 during erasure

and 1 after erasure on Q7.(Q6 is for toggle bit; see toggle

bit, DATA polling, timing waveform)

AUTOMATIC CHIP ERASE TIMING WAVEFORM

Vcc 5V

A11~A18

A0~A10

WE

CE

OE

Q0,Q1,

Q4(Note 1)

Q7

555H

2AAH

555H

555H

2AAH

555H

tAS

tCWC

tAH

tCEPH1

tAETC

tCEP

tDS tDH

Command In Command In

Command In

Command In

Command In

Command In

DATA polling

Command In

Command #AAH

(Q0~Q7)

Command In

Command #55H

Command In

Command #80H

Command In

Command #AAH

Command In

Command #55H

Command In

Command #10H

Notes:

(1). Q6:Toggle bit, Q5:Timing-limit bit, Q3: Time-out bit, Q2: Toggle bit

P/N:PM0629

REV. 1.0, DEC. 20, 1999

19

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