w49v002fa Winbond Electronics Corp America, w49v002fa Datasheet - Page 21

• Manufacturer Part Number: w49v002fa
• Description: 256k X 8 Cmos Flash Memory With Fwh Interface
• Manufacturer: Winbond Electronics Corp America

FWH INTERFACE MODE AC CHARACTERISTICS
AC Test Conditions
AC Test Load and Waveform
Read/Write Cycle Timing Parameters
(V
Reset Timing Parameters
Note: All AC timing signals observe the following guidelines for determining setup and hold times:
Input Pulse Levels
Input Rise/Fall Slew Rate
Input/Output Timing Level
Output Load
V
Clock Stable to Reset Active
Reset Pulse Width
Reset Active to Output Float
Reset Inactive to Input Active
Clock Cycle Time
Input Set Up Time
Input Hold Time
Clock to Data Valid
DD
DD
= 3.3V
(a) High level signal's reference level is input high and (b) low level signal's reference level is input low.
Ref. to the AC testing condition.
stable to Reset Active
D
Test when output from low to high
OUT
5%, V
PARAMETER
10 pF
PARAMETER
PARAMETER
GND
= 0V, T
A
25
= 0 to 70 C)
D
Test when output from high to low
OUT
10 pF
SYMBOL
T
T
T
T
CYC
HD
KQ
SU
0.6 V
1 V/nS
0.4 V
1 TTL Gate and C
SYM.
T
T
T
T
T
25
- 21 -
PRST
KRST
RSTP
RSTF
RST
DD
DD
V
to 0.2 V
/ 0.4 V
DD
MIN.
Publication Release Date: February 19, 2002
30
DD
7
0
-
MIN.
0.6V
0.2V
DD
100
100
W49V002FA
1
1
-
L
DD
DD
CONDITIONS
= 10 pF
Input
Test Point
TYP.
0.4V
-
-
-
-
-
MAX.
11
DD
-
-
-
W49V002FA
Output
Test Point
MAX.
50
-
-
-
-
0.4V
DD
Revision A2
UNIT
nS
nS
nS
nS
UNIT
mS
nS
nS
S
S