W78E516DDG Datasheet, PDF (77/90 Pages) Nuvotem Talema – 8-BIT MICROCONTROLLER

W78E516D/W78E058D Data Sheet
Port Access Cycle
PARAMETER
Port Input Setup to ALE Low
Port Input Hold from ALE Low
Port Output to ALE
SYMBOL
TPDS
TPDH
TPDA
MIN.
1 TCP
0
1 TCP
TYP.
-
-
-
MAX.
-
-
-
Note: Ports are read during S5P2, and output data becomes available at the end of S6P2. The timing data are referenced to
ALE, since it provides a convenient reference.
UNIT
nS
nS
nS
21.4 TIMING waveforms
21.4.1 Program Fetch Cycle
S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6
XTAL1
ALE
PSEN
PORT 2
PORT 0
T_APL
T_PSW
T_AAS
T_AAH
T_PDA
Code A0-A7
Data
T_ALW
T_PDH, T_PDZ
A0-A7
Code A0-A7
Data
A0-A7
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Publication Release Date: Feb 15, 2011
Revision A09