AM29LV160DB-70SE Просмотр технического описания (PDF) - Advanced Micro Devices

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AM29LV160DB-70SE

16 Megabit (2 M x 8-Bit/1 M x 16-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory

Advanced Micro Devices 

the system must write the reset command 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 Figure 6).

START

Read DQ7–DQ0

Read DQ7–DQ0 (Note 1)

Toggle Bit

No

= Toggle?

Yes

No

DQ5 = 1?

Yes

Read DQ7–DQ0

Twice

(Notes

1, 2)

Toggle Bit

No

= Toggle?

Yes

Program/Erase

Operation Not

Complete, Write

Reset Command

Program/Erase

Operation Complete

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.

Figure 6. Toggle Bit Algorithm

Am29LV160D

27

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