A29DL322UG-120 Ver la hoja de datos (PDF) - AMIC Technology

Número de pieza

componentes Descripción

Lista de partido

A29DL322UG-120

32 Megabit (4M x 8-Bit/2M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous Operation Flash Memory

AMIC Technology 

A29DL32x Series

START

PLSCNT=1

555/AA + 2AA/55 +

555/77

Wait 1 us

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

START

PLSCNT=1

555/AA + 2AA/55 +

555/77

Wait 1 us

Temporary Sector No

Unprotect Mode

First Write

Cycle=60h?

Yes

Set up sector

address

Sector Protect:

Write 60h to sector

address with A6=0,

A1=1, A0=0

No

First Write No Temporary Sector

Cycle=60h?

Unprotect Mode

Yes

All sectors

protected?

Yes

Set up first sector

address

Increment

PLSCNT

Wait 150 us

Verify Sector

Protect: Write 40h

to sector address

with A6=0, A1=1,

A0=0

Reset

PLSCNT=1

No

PLSCNT

=25?

Read from

sector address

with A6=0,

A1=1, A0=0

No

Data=01h?**

Yes

Device failed

Yes

Protect another

Yes

sector?

No

Write reset

command

Sector Unprotect:

Write 60h to sector

address with A6=1,

A1=1, A0=0

Increment

PLSCNT

Wait 15 ms

Verify Sector

Unprotect : Write

40h to sector

address with A6=1,

A1=1, A0=0

No

PLSCNT=

1000?

Yes

Device failed

Read from sector

address with A6=1,

A1=1, A0=0

No

Data=00h?**

Set up

next sector

address

Yes

Last sector

No

verified?

Sector Protect

Algorithm

Sector Protect

complete

Sector Unprotect

Algorithm

Yes

Write reset

Command

Sector Unprotect

complete

Note: The term “sector” in the figure applies to both sectors and sector blocks

* No other command is allowed during this process

** Read access time is 200ns-300ns

Figure 2-2. Software Sector/Sector Block Protection and Unprotection Algorithms

PRELIMINARY (May, 2005, Version 0.0)

17

AMIC Technology, Corp.

Share Link: