S29GL256P90FFIR20 Spansion Inc., S29GL256P90FFIR20 Datasheet - Page 44

• Manufacturer Part Number: S29GL256P90FFIR20
• Description: IC 256M PAGE-MODE FLASH MEMORY
• Manufacturer: Spansion Inc.

44
8. There are no means for individually erasing a specific PPB and no specific sector address is
9. Exit command must be issued after the execution which resets the device to read mode and re-
10. The programming state of the PPB for a given sector can be verified by writing a PPB Status Read
required for this operation.
enables reads and writes for Sector 0.
Command to the device as described by the flow chart shown in
No
Figure 8.2 PPB Program Algorithm
S29GL-P MirrorBit
Program PPB Bit.
Read Byte Twice
Read Byte Twice
Command Set.
Issue Reset
Addr = SA0
Enter PPB
Addr = SA0
Command
Addr = BA
Addr = SA
DQ5 = 1?
Toggle?
Toggle?
DQ6 =
DQ6 =
FAIL
Yes
Yes
Yes
Command Set
D a t a
No
No
Exit PPB
®
Flash Family
No
S h e e t
Wait 500 µs
Read Byte.
'0' (Pgm.)?
Addr = SA
DQ0 =
PASS
Yes
Figure
S29GL-P_00_A13 November 17, 2010
8.2.