HY29F080T12 datasheet(9/38 Pages) HYNIX

Part #	HY29F080T12

Description	8 Megabit (1M x 8), 5 Volt-only, Flash Memory

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Manufacturer	HYNIX [Hynix Semiconductor]

Direct Link	http://www.skhynix.com/kor/main.do

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9 / 38 page

9

Rev. 6.1/May 01

HY29F080

START

NOTE: All sectors must be

previously protected.

Set: TRYCNT = 1

Set: A9 = CE# = OE# = V

ID

Set: RESET# = V

IH

WE# = V

IL

Wait t

WPP2

Set:

A9 = V

ID

OE# = CE# = V

IL

Read Data

Data = 0x00?

NGRP = 7?

YES

TRYCNT = 1000?

NO

Increment TRYCNT

NO

YES

DEVICE FAILURE

NO

YES

Remove V

ID from A9

SECTOR UNPROTECT

COMPLETE

APPLY V

CC

Set Sector Group Address:

A[19:17] = Group NGRP

A0 = A6 = V

IL

A1 = V

IH

NGRP = NGRP + 1

Set: NGRP = 0

WE# = V

IH

Figure 2. Sector Group Unprotect Procedure

START

RESET# = V

ID

(All protected sector groups

become unprotected)

Perform Program or Erase

Operations

RESET# = V

IH

(All previously protected

sector groups return to

protected state)

TEMPORARY SECTOR

UNPROTECT COMPLETE

Figure 3. Temporary Sector Group Unprotect

n A read cycle at address 0xXXX01 returns the

device code (HY29F080 = 0xD5).

n A read cycle containing a sector group address

(Table 1) in A[19:17] and the address 0x02 in

A[7:0] returns 0x01 if that sector is protected,

or 0x00 if it is unprotected.

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HY29F080T12 Datasheet(PDF) 9 Page - Hynix Semiconductor

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