W78E365 Datasheet, PDF (29/40 Pages) Winbond – 8-BIT MICROCONTROLLER

W78E365
Timing Waveforms, continued
8.2 Data Read Cycle
XTAL1
ALE
PSEN
PORT 2
PORT 0
RD
S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3
A0-A7
A8-A15
DATA
TDAR
TDDA
TDDH, TDDZ
TDRD
PARAMETER
ALE Low to RD Low
RD Low to Data Valid
Data Hold from RD High
Data Float from RD High
RD Pulse Width
SYMBOL
TDAR
TDDA
TDDH
TDDZ
TDRD
MIN.
3 TCP-∆
-
0
0
6 TCP-∆
Notes:
1. Data memory access time is 8 TCP.
2. "∆" (due to buffer driving delay and wire loading) is 20 nS.
TYP.
-
-
-
-
6 TCP
MAX.
3 TCP+∆
4 TCP
2 TCP
2 TCP
-
UNIT
nS
nS
nS
nS
nS
NOTES
1, 2
1
2
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Publication Release Date: April 20, 2005
Revision A5