w78l812a Winbond Electronics Corp America, w78l812a Datasheet - Page 23

• Manufacturer Part Number: w78l812a
• Description: 8-bit Mcu Series 80c51-based
• Manufacturer: Winbond Electronics Corp America

9.5
Note: Ports are read during S5P2, and output data becomes available at the end of S6P2. The timing data are referenced to
9.6
Note: Flash data can be accessed only in flash mode. The RST pin must pull in V
V
Data Setup Time
Data Hold Time
Address Setup Time
Address Hold Time
Operation
OECTRL Setup Time
OECTRL Hold Time
Data Valid from
Port Input Setup to ALE Low
Port Input Hold from ALE Low
Port Output to ALE
CE Program Pulse Width for Program
OE Setup Time
OE High to Output Float
PP
and the PSEN pin must pull in V
ALE, since it provides a convenient reference.
Setup Time
Port Access Cycle
Program Operation
PARAMETER
PARAMETER
OE
IH
status.
SYMBOL
T
T
T
PDS
PDH
PDA
SYMBOL
T
T
T
T
T
T
T
T
T
T
T
PWP
OCS
OCH
VPS
OES
OEV
DFP
DS
DH
AS
AH
- 23 -
1 T
1 T
MIN.
0
CP
CP
Publication Release Date: November 6, 2006
MIN.
W78LE812/W78L812A
290
2.0
2.0
2.0
2.0
2.0
2.0
2.0
0
0
-
IH
status, the ALE pin must pull in V
TYP.
-
-
-
TYP.
300
-
-
-
-
-
-
-
-
-
-
MAX.
-
-
-
MAX.
310
130
150
-
-
-
-
-
-
-
-
Revision A9
UNIT
UNIT
μS
μS
μS
μS
μS
μS
μS
μS
μS
nS
nS
IL
nS
nS
nS
status,