W78E052C データシートの表示（PDF） - Winbond
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W78E052C Datasheet PDF : 22 Pages
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W78E52C/W78E052C
Port Access Cycle
PARAMETER
Port Input Setup to ALE Low
Port Input Hold from ALE Low
Port Output to ALE
SYMBOL
TPDS
TPDH
TPDA
MIN.
1 TCP
0
1 TCP
TYP.
-
-
-
MAX.
-
-
-
UNIT
nS
nS
nS
Note: Ports are read during S5P2, and output data becomes available at the end of S6P2. The timing data are referenced to
ALE, since it provides a convenient reference.
Program Operation
PARAMETER
VPP Setup Time
Data Setup Time
Data Hold Time
Address Setup Time
Address Hold Time
SYMBOL
TVPS
TDS
TDH
TAS
TAH
MIN.
2.0
2.0
2.0
2.0
0
TYP.
-
-
-
-
-
MAX.
-
-
-
-
-
UNIT
μS
μS
μS
μS
μS
CE Program Pulse Width for TPWP
290
300
310
μS
Program Operation
OECTRL Setup Time
TOCS
2.0
-
-
μS
OECTRL Hold Time
TOCH
2.0
-
-
μS
OE Setup Time
TOES
2.0
-
-
μS
OE High to Output Float
TDFP
0
-
130
nS
Data Valid from OE
TOEV
-
-
150
nS
Note: Flash data can be accessed only in flash mode. The RST pin must pull in VIH status, the ALE pin must pull in VIL status,
and the PSEN pin must pull in VIH status.
- 15 -
Publication Release Date: November 6, 2006
Revision A4
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