S29AL004D70TFI010 Spansion Inc., S29AL004D70TFI010 Datasheet - Page 32

• Manufacturer Part Number: S29AL004D70TFI010
• Description: Flash Memory IC
• Manufacturer: Spansion Inc.

Specifications of S29AL004D70TFI010

• Memory Size: 4Mbit
• Memory Configuration: 512K X 8 / 256K X 16
• Ic Interface Type: Parallel
• Access Time: 70ns
• Memory Case Style: TSOP
• No. Of Pins: 48
• Operating Temperature Range: -40°C To +85°C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

30
sector erase commands is always less than 50 µs. See also the
Command Sequence‚ on page
After the sector erase command sequence is written, the system should read the
status on DQ7 (Data# Polling) or DQ6 (Toggle Bit I) to ensure the device has ac-
cepted the command sequence, and then read DQ3. If DQ3 is 1, the internally
controlled erase cycle has begun; all further commands (other than Erase Sus-
pend) are ignored until the erase operation is complete. If DQ3 is 0, the device
(Note 1)
Notes:
1. Read toggle bit twice to determine whether or not it
2. Recheck toggle bit because it may stop toggling as
is toggling. See text.
DQ5 changes to 1. See text.
No
Figure 6. Toggle Bit Algorithm
Reset Command
Complete, Write
Read DQ7–DQ0
Read DQ7–DQ0
Read DQ7–DQ0
Program/Erase
A d v a n c e
Operation Not
Toggle Bit
Toggle Bit
= Toggle?
DQ5 = 1?
= Toggle?
22.
START
Twice
S29AL004D
Yes
Yes
Yes
(Notes
1, 2)
I n f o r m a t i o n
Operation Complete
No
No
Program/Erase
Sector Erase
S29AL004D_00_A1 February 18, 2005