w78e58 Winbond Electronics Corp America, w78e58 Datasheet - Page 15

• Manufacturer Part Number: w78e58
• Description: 8-bit Microcontroller
• Manufacturer: Winbond Electronics Corp America

Notes:
1. Data memory access time is 8 T
2. " " (due to buffer driving delay and wire loading) is 20 nS.
Data Write Cycle
Note: " " (due to buffer driving delay and wire loading) is 20 nS.
Port Access Cycle
Note: Ports are read during S5P2, and output data becomes available at the end of S6P2. The timing data are referenced to
Program Operation
ALE Low to WR Low
Data Valid to WR Low
Data Hold from WR High
WR Pulse Width
Data Hold from RD High
Data Float from RD High
RD 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
Program Operation
Program Operation
OECTRL Setup Time
OECTRL Hold Time
ALE, since it provides a convenient reference.
CE Program Pulse Width for
CE Program Pulse Width for
PP
Setup Time
PARAMETER
PARAMETER
PARAMETER
CP
.
SYMBOL
SYMBOL
SYMBOL
T
T
T
T
T
T
T
T
T
T
T
T
DDH
DDZ
DRD
T
T
T
OPWP
T
T
T
T
DAW
DWD
DWR
PWP
OCS
OCH
DAD
PDS
PDH
PDA
VPS
DS
DH
AS
AH
- 15 -
6 T
3 T
1 T
1 T
6 T
CP
0
0
1 T
1 T
MIN.
MIN.
MIN.
295
295
2.0
2.0
2.0
2.0
2.0
2.0
CP
CP
CP
CP
0
0
-
CP
CP
-
-
-
-
6 T
Publication Release Date: November 1997
6 T
-
-
TYP.
TYP.
TYP.
CP
300
300
-
-
-
-
-
-
-
-
-
-
-
-
-
CP
2 T
2 T
3 T
-
MAX.
MAX.
MAX.
CP
CP
305
305
CP
-
-
-
-
-
-
-
-
-
-
-
-
-
+
nS
nS
nS
UNIT
UNIT
UNIT
W78E58
nS
nS
nS
nS
nS
nS
nS
S
S
S
S
S
S
S
S
S
Revision A2
2