S29AL032D90TFI000 Spansion Inc., S29AL032D90TFI000 Datasheet - Page 45

• Manufacturer Part Number: S29AL032D90TFI000
• Description: Flash Memory IC
• Manufacturer: Spansion Inc.

Specifications of S29AL032D90TFI000

• Memory Size: 32Mbit
• Memory Configuration: 4M X 8
• Ic Interface Type: CFI, Parallel
• Access Time: 90ns
• Supply Voltage Range: 2.7 To 3.6 V
• Memory Case Style: TSOP
• No. Of Pins: 40
• Memory Type: Uniform Sector Flash
• Interface Type: CFI
• Rohs Compliant: Yes
• Cell Type: NOR
• Density: 32Mb
• Access Time (max): 90ns
• Boot Type: Top
• Address Bus: 22/21Bit
• Operating Supply Voltage (typ): 3/3.3V
• Operating Temp Range: -40C to 85C
• Package Type: TSOP
• Sync/async: Asynchronous
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (min): 2.7V
• Operating Supply Voltage (max): 3.6V
• Word Size: 8/16Bit
• Number Of Words: 4M/2M
• Supply Current: 35mA
• Mounting: Surface Mount
• Pin Count: 48
• Lead Free Status / Rohs Status: Compliant

January 19, 2007 S29AL032D_00_A9
or erase operation. If it is still toggling, then the device had not complete the operation successfully, and the
system must write the reset command in order to return to reading array data.
The remaining scenario is that the system initially determines that the toggle bit is toggling and DQ5 has not
gone high. The system may continue to monitor the toggle bit and DQ5 through successive read cycles,
determining the status as described in the previous paragraph. Alternatively, it may choose to perform other
system tasks. In this case, the system must start at the beginning of the algorithm when it returns to
determine the status of the operation (top of
Notes
1. Read toggle bit twice to determine whether or not it is toggling. See text.
2. Recheck toggle bit because it may stop toggling as DQ5 changes to 1. See text.
D a t a
No
S h e e t
Figure 12.2 Toggle Bit Algorithm
S29AL032D
Reset Command
Complete, Write
Read DQ7–DQ0
Read DQ7–DQ0
Read DQ7–DQ0
Program/Erase
Operation Not
Toggle Bit
Toggle Bit
DQ5 = 1?
Figure 12.2 on page
= Toggle?
= Toggle?
START
Twice
Yes
Yes
Yes
(Note 1)
Operation Complete
No
No
Program/Erase
43).
(Notes 1, 2)
43