W78E51B-40 WINBOND [Winbond], W78E51B-40 Datasheet - Page 16

• Manufacturer Part Number: W78E51B-40
• Description: 8-BIT MTP MICROCONTROLLER
• Manufacturer: WINBOND [Winbond]

TIMING WAVEFORMS
Program Fetch Cycle
Data Read Cycle
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
S6
AAS
DAR
T
T
S3
PDA
APL
T
PSW
Data
S1
A8-A15
S4
T
DDA
A0-A7
S2
T
T
S5
PDH,
DRD
- 16 -
T
ALW
T
PDZ
S6
S3
DATA
Code
S1
S4
T
A0-A7
DDH,
S2
Preliminary W78E51B
S5
T
DDZ
S3
Data
S6
S4
S1
A0-A7
S5
S2
S6
S3