AT49BV161T データシートの表示（PDF） - Atmel Corporation

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AT49BV161T

16-megabit (1M x 16/2M x 8) 3-volt Only Flash Memory

Atmel Corporation 

Figure 3. Toggle Bit Algorithm

(Configuration Register = 00)

START

Read I/O7 - I/O0

Read I/O7 - I/O0

AT49BV/LV160(T)/161(T)

Figure 4. Toggle Bit Algorithm

(Configuration Register = 01)

START

Read I/O7 - I/O0

Read I/O7 - I/O0

Toggle Bit =

NO

Toggle?

YES

NO I/O3, I/O5 = 1?

YES

Read I/O7 - I/O0

Twice

Toggle Bit =

NO

Toggle?

YES

NO I/O3, I/O5 = 1?

YES

Read I/O7 - I/O0

Twice

Toggle Bit =

NO

Toggle?

YES

Program/Erase

Operation Not

Successful, Write

Product ID

Exit Command

Program/Erase

Operation

Successful

Note:

1. The system should recheck the toggle bit even if

I/O5 = “1” because the toggle bit may stop toggling

as I/O5 changes to “1”.

Toggle Bit =

NO

Toggle?

YES

Program/Erase

Operation Not

Successful, Write

Product ID

Exit Command

Program/Erase

Operation

Successful,

Write Product ID

Exit Command

Note:

1. The system should recheck the toggle bit even if

I/O5 = “1” because the toggle bit may stop toggling

as I/O5 changes to “1”.

11

1427L–FLASH–02/03

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