AM28F256-120ECB AMD [Advanced Micro Devices], AM28F256-120ECB Datasheet - Page 30

• Manufacturer Part Number: AM28F256-120ECB
• Description: 256 Kilobit (32 K x 8-Bit) CMOS 12.0 Volt, Bulk Erase Flash Memory
• Manufacturer: AMD [Advanced Micro Devices]

SWITCHING WAVEFORMS
30
Addresses
WE# (W#)
Data (DQ)
OE# (G#)
CE# (E#)
5.0 V
V
V
V
V
PPH
0 V
PPL
CC
PP
Power-up,
Standby
t
ELWL
t
WLWH
HIGH Z
(t
t
CS
DVWH
(t
)
Setup Program
WP
t
Command
AVAV
t
(t
AVWL
)
DS
Figure 9.
)
(t
t
VCS
t
WC
(t
VPEL
AS
)
DATA IN
)
t
= 40h
GHWL
t
WHWL
Latch Address
AC Waveforms for Programming Operations
(t
Command
OES
and Data
Program
(t
t
WHEH
WPH
)
t
WHDX
)
(t
CH
(t
DATA IN
Am28F256
)
DH
t
WLAX
Programming
)
(t
AH
t
WHWH1
)
Command
Verify
DATA IN
t
= C0h
t
ELQV
ELQX
t
GLQV
(t
(t
CE
LZ
t
WHGL
)
)
(t
Programming
t
GHQZ
OE
Verification
t
t
t
AVAV
GHQZ
AXQX
)
(t
(t
DF
(t
(t
RC
DF
OH
)
)
)
)
VALID
DATA
OUT
Power-down
t
Standby,
GLQX
11560F-18
(t
OLZ
)