AM29F400B AMD [Advanced Micro Devices], AM29F400B Datasheet - Page 30

• Manufacturer Part Number: AM29F400B
• Description: 4 Megabit (512 K x 8-Bit/256 K x 16-Bit) CMOS 5.0 Volt-only Boot Sector Flash Memory
• Manufacturer: AMD [Advanced Micro Devices]

AC CHARACTERISTICS
Note:
VA = Valid address. Illustration shows first status cycle after command sequence, last status read cycle, and array data read cycle.
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.
30
Addresses
Addresses
DQ0–DQ6
DQ6/DQ2
RY/BY#
RY/BY#
WE#
DQ7
WE#
OE#
OE#
CE#
CE#
t
t
t
t
BUSY
BUSY
CH
CH
t
t
OEH
OEH
Figure 15. Data# Polling Timings (During Embedded Algorithms)
Figure 16. Toggle Bit Timings (During Embedded Algorithms)
High Z
t
t
ACC
ACC
t
t
CE
CE
t
VA
t
t
VA
t
RC
OE
RC
OE
Complement
Status Data
Valid Status
(first read)
t
t
OH
OH
t
DF
t
DF
P R E L I M I N A R Y
Am29F400B
(second read)
Valid Status
VA
VA
Complement
Status Data
True
True
(stops toggling)
Valid Status
VA
VA
Valid Data
Valid Data
Valid Data
VA
21505C-19
21505C-20
High Z
High Z