W79E532A Datasheet, PDF (64/78 Pages) Winbond – 8-BIT MICROCONTROLLER

W79E532A/W79L532A
17.3 A.C. Characteristics
Clock
tCHCL
tCLCH
tCLCX
tCLCL
tCHCX
Note: Duty cycle is 50%.
External Clock Characteristics
PARAMETER
Clock High Time
Clock Low Time
Clock Rise Time
Clock Fall Time
SYMBOL
t_CHCX
t_CLCX
t_CLCH
t_CHCL
17.3.1 A.C. Specification
PARAMETER
Oscillator Frequency
ALE Pulse Width
Address Valid to ALE Low
Address Hold After ALE Low
Address Hold After ALE Low for
MOVX Write
ALE Low to Valid Instruction In
ALE Low to PSEN Low
PSEN Pulse Width
PSEN Low to Valid Instruction In
Input Instruction Hold After PSEN
Input Instruction Float After PSEN
Port 0 Address to Valid Instr. In
Port 2 Address to Valid Instr. In
MIN.
12
12
-
-
TYP.
-
-
-
-
MAX.
-
-
10
10
UNITS
nS
nS
nS
nS
NOTES
SYMBOL
1/t_CLCL
t_LHLL
t_AVLL
t_LLAX1
t_LLAX2
t_LLIV
t_LLPL
t_PLPH
t_PLIV
t_PXIX
t_PXIZ
t_AVIV1
t_AVIV2
VARIABLE
CLOCK
MIN.
0
1.5t_CLCL - 5
0.5t_CLCL - 5
0.5t_CLCL - 5
0.5t_CLCL - 5
0.5t_CLCL - 5
2.0t_CLCL - 5
0
VARIABLE
CLOCK
MAX.
40
2.5t_CLCL - 20
2.0t_CLCL - 20
t_CLCL - 5
3.0t_CLCL - 20
3.5t_CLCL - 20
UNITS
MHz
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
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