W79E201 Datasheet, PDF (73/87 Pages) Winbond – 8-BIT MICROCONTROLLER

W79E201
23.4.2 MOVX Characteristics Using Stretch Memory Cycle
PARAMETER
SYM.
Data Access ALE Pulse Width
t_LLHL2
Address Hold After ALE Low for
MOVX write
t_LLAX2
RD Pulse Width
t_RLRH
WR Pulse Width
t_WLWH
VARIABLE
CLOCK
MIN.
1.5t_CLCL - 5
2.0t_CLCL - 5
0.5t_CLCL - 5
2.0t_CLCL - 5
t_MCS - 10
2.0t_CLCL - 5
t_MCS - 10
RD Low to Valid Data In
t_RLDV
Data Hold after Read
t_RHDX
0
Data Float after Read
t_RHDZ
ALE Low to Valid Data In
t_LLDV
Port 0 Address to Valid Data In
t_AVDV1
ALE Low to RD or WR Low
t_LLWL
Port 0 Address to RD or WR Low ^tAVWL
Port 2 Address to RD or WR Low ^tAVWL2
Data Valid to WR Transition
t_QVWX
Data Hold after Write
RD Low to Address Float
RD or WR high to ALE high
t_WHQX
t_RLAZ
t_WHLH
0.5t_CLCL - 5
1.5t_CLCL - 5
t_CLCL - 5
2.0t_CLCL - 5
1.5t_CLCL - 5
2.5t_CLCL - 5
-5
1.0t_CLCL - 5
t_CLCL - 5
2.0t_CLCL - 5
0
1.0t_CLCL - 5
VARIABLE
CLOCK
MAX.
UNITS STRECH
nS
t_MCS = 0
t_MCS>0
nS
nS
nS
2.0t_CLCL - 20 _nS
t_MCS - 20
nS
t_CLCL - 5
nS
2.0t_CLCL - 5
2.5t_CLCL - 5
t_MCS + 2t_CLCL - ^nS
40
3.0t_CLCL - 20 _nS
2.0t_CLCL - 5
0.5t_CLCL + 5
nS
1.5t_CLCL + 5
nS
nS
nS
nS
0.5t_CLCL - 5
nS
10
nS
1.0t_CLCL + 5
t_MCS = 0
t_MCS>0
t_MCS = 0
t_MCS>0
t_MCS = 0
t_MCS>0
t_MCS = 0
t_MCS>0
t_MCS = 0
t_MCS>0
t_MCS = 0
t_MCS>0
t_MCS = 0
t_MCS>0
t_MCS = 0
t_MCS>0
t_MCS = 0
t_MCS>0
t_MCS = 0
t_MCS>0
t_MCS = 0
t_MCS>0
t_MCS = 0
t_MCS>0
- 73 -
Publication Release Date: December 16, 2004
Revision A2