User Manual

W29C040
Publication Release Date: May 1999
- 13 - Revision A5
AC Characteristics, continued
DATA
Polling Characteristics
(1)
PARAMETER SYMBOL MIN. TYP. MAX. UNIT
Data Hold Time TDH 10 - - nS
OE
Hold Time
TOEH 10 - - nS
OE
to Output Delay
(2)
TOE - - - nS
Write Recovery Time TWR 0 - - nS
Notes:
(1) These parameters are characterized and not 100% tested.
(2) See TOE spec in A.C. Read Cycle Timing Parameters.
Toggle Bit Characteristics
(1)
PARAMETER SYMBOL MIN. TYP. MAX. UNIT
Data Hold Time TDH 10 - - nS
OE
Hold Time
TOEH 10 - - nS
OE
to Output Delay
(2)
TOE - - - nS
OE
High Pulse
TOEHP 150 - - nS
Write Recovery Time TWR 0 - - nS
Notes:
(1) These parameters are characterized and not 100% tested.
(2) See TOE spec in A.C. Read Cycle Timing Parameters.
TIMING WAVEFORMS
Read Cycle Timing Diagram
Address A18-0
DQ7-0
Data ValidData Valid
High-Z
CE
OE
WE
T
RC
V
IH
T
OE
T
CE
T
OH
T
AA
T
CHZ
T
OHZ
High-Z