W78C438C_06 Datasheet, PDF (15/22 Pages) Winbond – 8-BIT MICROCONTROLLER

W78C438C
6.3.3 Data Memory Read/Write Cycle
PARAMETER
Address Valid to RD Low
RD Low to Data Valid
Data Hold After RD High
RD Pulse Width
Address Valid to WR Low
Data Valid to WR Low
Data Hold After WR High
WR Pulse Width
SYMBOL
TARL
TRDV
TRDQ
TRS
TAWL
TDWL
TWDQ
TWS
Note: "∆" (due to buffer driving delay and wire loading) is 20 nS.
MIN.
4 TCP
-
0
6 TCP -∆
4 TCP
1 TCP
1 TCP
6 TCP -∆
TYP.
-
-
-
6 TCP
-
-
-
6 TCP
MAX.
4 TCP +∆
4 TCP
2 TCP
-
4 TCP +∆
-
-
-
UNIT
nS
nS
nS
nS
nS
nS
nS
nS
- 15 -
Publication Release Date: December 4, 2006
Revision A6