w78c32c Winbond Electronics Corp America, w78c32c Datasheet - Page 9

• Manufacturer Part Number: w78c32c
• Description: 8-bit Microcontroller
• Manufacturer: Winbond Electronics Corp America

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
TIMING WAVEFORMS
Program Fetch Cycle
Data Read Cycle
Port Input Setup to ALE Low
Port Input Hold from ALE Low
Port Output to ALE
ALE, since it provides a convenient reference.
PARAMETER
PORT 2
PORT 0
XTAL1
PSEN
ALE
RD
PORT 2
PORT 0
PSEN
XTAL1
ALE
S4
Code
S1
A0-A7
T
S5
AAH
A0-A7
S2
T
T
DAR
S6
AAS
T
T
SYMBOL
PDA
S3
APL
T
PSW
T
T
T
Data
S1
PDH
PDS
PDA
A8-A15
S4
T
DDA
A0-A7
S2
T
T
S5
PDH,
DRD
T
- 9 -
ALW
T
PDZ
1 T
1 T
S6
S3
MIN.
DATA
0
Code
CP
CP
S1
S4
T
A0-A7
DDH,
S2
TYP.
S5
-
-
-
T
DDZ
S3
Publication Release Date: July 1999
Data
S6
S4
MAX.
-
-
-
S1
A0-A7
S5
S2
S6
UNIT
nS
nS
nS
W78C32C
S3
Revision A2