S29PL-J55BAI011 datasheet(68/96 Pages) SPANSION

68 / 96 page

S29PL-J

S29PL-J_00_A9 September 22, 2006

Data

Sheet

(Adv an ce

Inf o r m a t io n)

The system can use DQ6 and DQ2 together to determine whether a sector is actively erasing or is erase-

suspended. When the device is actively erasing (that is, the Embedded Erase algorithm is in progress), DQ6

toggles. When the device enters the Erase Suspend mode, DQ6 stops toggling. However, the system must

also use DQ2 to determine which sectors are erasing or erase-suspended. Alternatively, the system can use

DQ7 (see the DQ7: Data# Polling on page 64).

If a program address falls within a protected sector, DQ6 toggles for approximately 1 µs after the program

command sequence is written, then returns to reading array data.

DQ6 also toggles during the erase-suspend-program mode, and stops toggling once the Embedded Program

algorithm is complete.

Table 16.1 on page 68 shows the outputs for Toggle Bit I on DQ6. Figure 16.2 on page 66 shows the toggle

bit algorithm. Figure 20.11 on page 80 in shows the toggle bit timing diagrams. Figure 20.12 on page 80

shows the differences between DQ2 and DQ6 in graphical form. See also the DQ2: Toggle Bit II on page 67.

Figure 16.2 Toggle Bit Algorithm

Note:

The system should recheck the toggle bit even if DQ5 = “1” because the toggle bit may stop toggling as DQ5 changes to “1.” See the DQ6:

Toggle Bit I on page 65 and DQ2: Toggle Bit II on page 67 for more information.

DQ7 = Data?

Yes

DQ5 = 1?

Yes

FAIL

PASS

Read DQ7–DQ0

Addr = VA

Read DQ7–DQ0

Addr = VA

DQ7 = Data?

START

S29PL-J55BAI011 Datasheet(PDF) 68 Page - SPANSION