S29AL008J55TFIR20 Spansion Inc., S29AL008J55TFIR20 Datasheet - Page 24

• Manufacturer Part Number: S29AL008J55TFIR20
• Description: IC 8M FLASH MEMORY
• Manufacturer: Spansion Inc.

Specifications of S29AL008J55TFIR20

• Cell Type: NOR
• Density: 8Mb
• Access Time (max): 55ns
• Interface Type: Parallel
• Boot Type: Bottom
• Address Bus: 20/19Bit
• Operating Supply Voltage (typ): 3/3.3V
• Operating Temp Range: -40C to 85C
• Package Type: TSOP
• Program/erase Volt (typ): 3 to 3.6V
• Sync/async: Asynchronous
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 3.6V
• Word Size: 8/16Bit
• Number Of Words: 1M/512K
• Supply Current: 12mA
• Mounting: Surface Mount
• Pin Count: 48
• Lead Free Status / Rohs Status: Compliant

24
The Secured Silicon Sector protection must be used with caution since, once protected, there is no procedure
available for unprotecting the Secured Silicon Sector area, and none of the bits in the Secured Silicon Sector
memory space can be modified in any way.
Figure 8.1 Secured Silicon Sector Protect Verify
A2=0, A3=1, A4=1,
Write 40h to SecSi
A2=0, A3=1, A4=1,
A5=0, A6=0, A7=0
A5=0, A6=0, A7=0
Read from SecSi
with A0=0, A1=1,
with A0=0, A1=1,
Sector address
Sector address
S29AL008J
RESET# = V
Write 60h to
any address
Wait 1 ms
START
D a t a
ID
S h e e t
SecSi Sector is
SecSi Sector is
If data = 00h,
If data = 01h,
from RESET#
Remove V
SecSi Sector
Protect Verify
unprotected.
Write reset
protected.
command
complete
ID
S29AL008J_00_09 February 23, 2010