AM29LV116BT120EE View Datasheet(PDF) - Advanced Micro Devices

Part Name

Description

Manufacturer

AM29LV116BT120EE

16 Megabit (2 M x 8-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory

Advanced Micro Devices 

PRELIMINARY

START

PLSCNT = 1

RESET# = VID

Wait 1 µs

Temporary Sector

Unprotect Mode

No First Write

Cycle = 60h?

Yes

Set up sector

address

Sector Protect:

Write 60h to sector

address with

A6 = 0, A1 = 1,

A0 = 0

Wait 150 µs

Increment

PLSCNT

No

PLSCNT

= 25?

Yes

Device failed

Verify Sector

Protect: Write 40h

to sector address

with A6 = 0,

A1 = 1, A0 = 0

Read from

sector address

with A6 = 0,

A1 = 1, A0 = 0

Reset

PLSCNT = 1

No

Data = 01h?

Yes

Yes

Protect another

sector?

No

Remove VID

from RESET#

Sector Protect

Algorithm

Write reset

command

Sector Protect

complete

Protect all sectors:

The indicated portion

of the sector protect

algorithm must be

performed for all

unprotected sectors

prior to issuing the

first sector

unprotect address

Increment

PLSCNT

START

PLSCNT = 1

RESET# = VID

Wait 1 µs

First Write No Temporary Sector

Cycle = 60h?

Unprotect Mode

Yes

No All sectors

protected?

Yes

Set up first sector

address

Sector Unprotect:

Write 60h to sector

address with

A6 = 1, A1 = 1,

A0 = 0

Wait 15 ms

Verify Sector

Unprotect: Write

40h to sector

address with

A6 = 1, A1 = 1,

A0 = 0

No

PLSCNT

= 1000?

Yes

Read from

sector address

with A6 = 1,

A1 = 1, A0 = 0

No

Data = 00h?

Yes

Set up

next sector

address

Device failed

Sector Unprotect

Algorithm

Last sector No

verified?

Yes

Remove VID

from RESET#

Write reset

command

Sector Unprotect

complete

Figure 1. In-System Sector Protect/Unprotect Algorithms

Am29LV116B

21359C-4

12

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