AM29DL400BB-120EC AMD [Advanced Micro Devices], AM29DL400BB-120EC Datasheet - Page 34

• Manufacturer Part Number: AM29DL400BB-120EC
• Description: 4 Megabit (512 K x 8-Bit/256 K x 16-Bit) CMOS 3.0 Volt-only, Simultaneous Operation Flash Memory
• Manufacturer: AMD [Advanced Micro Devices]

AC CHARACTERISTICS
Note: VA = Valid address; not required for DQ6. Illustration shows first two status cycle after command sequence, last status read
cycle, and array data read cycle
34
Note: DQ2 toggles only when read at an address within an erase-suspended sector. The system may use OE# or CE# to toggle
DQ2 and DQ6.
WE#
DQ6
DQ2
Addresses
DQ6/DQ2
RY/BY#
WE#
OE#
CE#
Embedded
Erasing
Enter
Valid Data
t
DH
Erase
t
Figure 21. Toggle Bit Timings (During Embedded Algorithms)
OEH
Suspend
Erase
Erase Suspend
(first read)
Status
Read
Valid
P R E L I M I N A R Y
t
Figure 22. DQ2 vs. DQ6
OEPH
Suspend Program
Enter Erase
Am29DL400B
t
AHT
t
OE
(second read)
t
ASO
Status
Valid
Suspend
Program
Erase
t
CEPH
t
t
AHT
AS
Erase Suspend
Read
(stops toggling)
Resume
Status
Erase
Valid
Erase
Valid Data
Complete
21606C-25
21606C-26
Erase