W79E632A Datasheet, PDF (67/79 Pages) Winbond – 8-BIT MICROCONTROLLER

W79E632A/W79L632A
17.3.2 Operating Frequency vs Voltage
DEVICE
OPERATING
FREQUENCY
W79E632A40PL
W79L632A25PL
Up to 40.0MHz
Up to 36.8MHz
Up to 20.0MHz
Up to 12.0MHz
OPERATING
VOLTAGE
5.0V ~ 5.5V
4.5V ~ 5.5V
3.3V ~ 5.5V
3.0V ~ 5.5V
17.3.3 MOVX Characteristics Using Strech Memory Cycle
PARAMETER
SYMBOL
Data Access ALE Pulse Width
Address Hold After ALE Low for
MOVX write
RD Pulse Width
tLLHL2
tLLAX2
tRLRH
WR Pulse Width
tWLWH
RD Low to Valid Data In
Data Hold after Read
Data Float after Read
tRLDV
tRHDX
tRHDZ
ALE Low to Valid Data In
tLLDV
Port 0 Address to Valid Data In
tAVDV1
ALE Low to RD or WR Low
Port 0 Address to RD or WR
Low
tLLWL
tAVWL
VARIABLE
CLOCK
MIN.
1.5tCLCL - 5
2.0tCLCL - 5
0.5tCLCL - 5
2.0tCLCL - 5
tMCS - 10
2.0tCLCL - 5
tMCS - 10
0
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
Data Valid to WR Transition
Data Hold after Write
tAVWL2
tQVWX
tWHQX
1.5tCLCL - 5
2.5tCLCL - 5
-5
1.0tCLCL - 5
tCLCL - 5
UNITS
nS
nS
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
tMCS = 0
tMCS>0
tMCS = 0
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Publication Release Date: Nov. 11, 2009
Revision A10