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W79E532A Datasheet, PDF (65/78 Pages) Winbond – 8-BIT MICROCONTROLLER
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W79E532A/W79L532A
A.C. Specification, continued.
PARAMETER
PSEN Low to Address Float
Data Hold After Read
Data Float After Read
RD Low to Address Float
SYMBOL
tPLAZ
tRHDX
tRHDZ
tRLAZ
VARIABLE
CLOCK
MIN.
0
0
VARIABLE
CLOCK
MAX.
tCLCL - 5
0.5tCLCL - 5
UNITS
nS
nS
nS
nS
17.3.2 MOVX Characteristics Using Strech Memory Cycle
PARAMETER
Data Access ALE Pulse Width
Address Hold After ALE Low for
MOVX write
RD Pulse Width
WR Pulse Width
SYMBOL
tLLHL2
tLLAX2
tRLRH
tWLWH
VARIABLE
CLOCK
MIN.
1.5tCLCL - 5
2.0tCLCL - 5
0.5tCLCL - 5
2.0tCLCL - 5
tMCS - 10
2.0tCLCL - 5
tMCS - 10
RD Low to Valid Data In
tRLDV
Data Hold after Read
tRHDX
0
Data Float after Read
tRHDZ
ALE Low to Valid Data In
tLLDV
Port 0 Address to Valid Data In
ALE Low to RD or WR Low
Port 0 Address to RD or WR
Low
tAVDV1
tLLWL
tAVWL
0.5tCLCL - 5
1.5tCLCL - 5
tCLCL - 5
2.0tCLCL - 5
VARIABLE
CLOCK
MAX.
2.0tCLCL - 20
tMCS - 20
tCLCL - 5
2.0tCLCL - 5
2.5tCLCL - 5
tMCS + 2tCLCL - 40
3.0tCLCL - 20
2.0tCLCL - 5
0.5tCLCL + 5
1.5tCLCL + 5
Port 2 Address to RD or WR
Low
tAVWL2
1.5tCLCL - 5
2.5tCLCL - 5
UNITS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
STRECH
tMCS = 0
tMCS>0
tMCS = 0
tMCS>0
tMCS = 0
tMCS>0
tMCS = 0
tMCS>0
tMCS = 0
tMCS>0
tMCS = 0
tMCS>0
tMCS = 0
tMCS>0
tMCS = 0
tMCS>0
tMCS = 0
tMCS>0
tMCS = 0
tMCS>0
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Publication Release Date: January 03, 2007
Revision A7
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