w78e051b ETC-unknow, w78e051b Datasheet - Page 17

• Manufacturer Part Number: w78e051b
• Description: 8-bit Microcontroller
• Manufacturer: ETC-unknow

8.3.4
Note: " Δ " (due to buffer driving delay and wire loading) is 20 nS.
8.3.5
Note : Ports are read during S5P2, and output data becomes available at the end of S6P2. The timing data are referenced to
8.3.6
Note: Flash data can be accessed only in flash mode. The RST pin must pull in V
ALE Low to WR Low
Data Valid to WR Low
Data Hold from WR High
WR Pulse Width
Port Input Setup to ALE Low
Port Input Hold from ALE Low
Port Output to ALE
V
Data Setup Time
Data Hold Time
Address Setup Time
Address Hold Time
Operation
OECTRL Setup Time
OECTRL Hold Time
Data Valid from OE
CE Program Pulse Width for Program
OE Setup Time
OE High to Output Float
PP
ALE, since it provides a convenient reference.
and the PSEN pin must pull in V
Setup Time
Data Write Cycle
Port Access Cycle
Program Operation
PARAMETER
PARAMETER
PARAMETER
IH
status.
SYMBOL
T
T
T
T
DAW
DWD
DWR
DAD
SYMBOL
SYMBOL
T
T
T
T
T
T
T
T
T
T
T
T
T
T
PWP
OCS
OCH
PDS
PDH
PDA
VPS
OES
OEV
DFP
DS
DH
AS
AH
- 17 -
3 T
1 T
1 T
6 T
MIN.
CP
CP
CP
CP
1 T
1 T
MIN.
MIN.
-Δ
-Δ
-Δ
-Δ
290
2.0
2.0
2.0
2.0
2.0
2.0
2.0
0
0
0
-
CP
CP
IH
Publication Release Date: Sep. 6, 2005
status, the ALE pin must pull in V
6 T
TYP.
-
-
-
CP
TYP.
TYP.
300
-
-
-
-
-
-
-
-
-
-
-
-
-
3 T
MAX.
CP
MAX.
MAX.
-
-
-
W78E51B
310
130
150
-
-
-
+Δ
-
-
-
-
-
-
-
-
Revision A7
UNIT
UNIT
UNIT
IL
nS
nS
nS
nS
nS
nS
nS
μS
μS
μS
μS
μS
μS
μS
μS
μS
nS
nS
status,