w29c040 Winbond Electronics Corp America, w29c040 Datasheet - Page 12

• Manufacturer Part Number: w29c040
• Description: 512k X 8 Cmos Flash Memory
• Manufacturer: Winbond Electronics Corp America

AC Characteristics, continued
Read Cycle Timing Parameters
(V
Byte/Page-write Cycle Timing Parameters
Notes:
All AC timing signals observe the following guideline for determining setup and hold times:
(1) High level signal's reference level is V
(2) Low level signal's reference level is V
Read Cycle Time
Chip Enable Access Time
Address Access Time
Output Enable Access Time
Output Hold from Address change
CE High to High-Z Output
OE High to High-Z Output
Write Cycle (erase and program)
Address Setup Time
Address Hold Time
Data Setup Time
Data Hold Time
Byte Load Cycle Time
WE and CE Setup Time
WE and CE Hold Time
OE High Setup Time
OE High Hold Time
CE Pulse Width
WE Pulse Width
WE High Width
DD
= 5.0V 10
PARAMETER
for 90,120 and 150 nS, V
PARAMETER
IL
IH
SS
= 0V, T
SYM.
T
T
T
T
T
T
T
RC
CE
AA
OE
CHZ
OHZ
OH
A
= 0 to 70 C)
SYMBOL
- 12 -
MIN.
T
T
T
T
T
T
T
T
T
T
T
T
T
90
W29C040-90
WC
AS
AH
CS
CH
OES
OEH
CP
WP
WPH
DS
DH
BLC
0
-
-
-
-
-
MAX.
MIN.
100
90
90
40
25
25
50
70
70
50
0
0
0
0
0
0
-
-
-
-
TYP.
MIN.
120
W29C040-12
0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
MAX.
MAX.
150
120
120
10
50
30
30
W29C040
-
-
-
-
-
-
-
-
-
-
-
-
-
UNIT
UNIT
mS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
S