S29AS008J70BFI030 Spansion Inc., S29AS008J70BFI030 Datasheet - Page 20

• Manufacturer Part Number: S29AS008J70BFI030
• Description: IC 8M FLASH MEMORY
• Manufacturer: Spansion Inc.

Specifications of S29AS008J70BFI030

• Cell Type: NOR
• Density: 8Mb
• Access Time (max): 70ns
• Interface Type: Parallel
• Boot Type: Bottom/Top
• Address Bus: 20/19Bit
• Operating Supply Voltage (typ): 1.8V
• Operating Temp Range: -40C to 85C
• Package Type: FBGA
• Program/erase Volt (typ): 1.65 to 1.95V
• Sync/async: Asynchronous
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (min): 1.65V
• Operating Supply Voltage (max): 1.95V
• Word Size: 8/16Bit
• Number Of Words: 1M/512K
• Supply Current: 12mA
• Mounting: Surface Mount
• Pin Count: 48
• Lead Free Status / Rohs Status: Compliant

Note
1. If WP# = V
20
Protect Algorithm
Group Unprotect Mode
Temporary Sector
Sector Group
IL
Device failed
, the top or bottom two address sectors remains protected for boot sector devices
Increment
PLSCNT
PLSCNT
= 25?
No
Yes
No
No
Sector Group Protect:
Verify Sector Group
Write 60h to sector
Protect: Write 40h
to sector address
Protect complete
A1 = 1, A0 = 0
sector address
Protect another
RESET# = V
A1 = 1, A0 = 0
A1 = 1, A0 = 0
address with
A3 = A2 = 0,
from RESET#
Figure 7.1 In-System Sector Group Protect/Unprotect Algorithms
Set up sector
A3 = A2 = 0,
A3 = A2 = 0,
Sector Group
PLSCNT = 1
Cycle = 60h?
Remove V
Wait 100 µs
with A6 = 0,
with A6 = 0,
Data = 01h?
Write reset
Read from
First Write
command
Wait 1 μs
address
A6 = 0,
START
sector?
Yes
Yes
No
ID
ID
Yes
PLSCNT = 1
Reset
S29AS008J
The indicated portion
Protect all sectors:
must be performed
of the sector group
for all unprotected
protect algorithm
sector group prior
to issuing the first
unprotect address
Unprotect Algorithm
sector group
D a t a
Sector Group
Device failed
Increment
PLSCNT
PLSCNT
= 1000?
S h e e t
No
Yes
No
No
Sector Group Unprotect:
Verify Sector Group
Unprotect complete
Write 60h to sector
Set up first sector
Unprotect: Write
A6 = 1, A1 = 1,
A6 = 1, A1 = 1,
sector address
RESET# = V
group address
A1 = 1, A0 = 0
group verified?
A3 = A2 = 0,
from RESET#
Sector Group
40h to sector
address with
PLSCNT = 1
Cycle = 60h?
Remove V
address with
with A6 = 1,
Data = 00h?
Write reset
Wait 10 ms
Read from
First Write
Last sector
All sectors
protected?
command
Wait 1 μs
START
A0 = 0
A0 = 0
Yes
Yes
Yes
Yes
ID
ID
S29AS008J_00_08 July 16, 2009
No
No
Temporary Sector Group
next sector
Unprotect Mode
address
Set up