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參數資料
型號: W77C32
廠商: WINBOND ELECTRONICS CORP
元件分類: 8位微控制器
英文描述: 8 BIT MICROCONTROLLER
中文描述: 8位微控制器
文件頁數: 64/71頁
文件大小: 860K
代理商: W77C32
Preliminary W77C32
- 64 -
AC CHARACTERISTICS
t
CLCL
t
CLCX
t
CHCX
t
CLCH
t
CHCL
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
MIN.
12.5
12.5
-
-
TYP.
-
-
-
-
MAX.
-
-
10
10
UNITS
nS
nS
nS
nS
NOTES
Note: Duty cycle is 50 %.
AC Specification
PARAMETER
SYM.
VARIABLE
CLOCK
MIN.
0
1.5 t
CLCL
- 5
0.5 t
CLCL
- 5
0.5 t
CLCL
- 5
0.5 t
CLCL
- 5
VARIABLE
CLOCK
MAX.
40
UNITS
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
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
t
PLAZ
t
RHDX
t
RHDZ
t
RLAZ
MHz
nS
nS
nS
nS
nS
nS
nS
2.5 t
CLCL
- 20
0.5 t
CLCL
- 5
2.0 t
CLCL
- 5
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
2.0 t
CLCL
- 20
nS
0
nS
nS
nS
nS
nS
t
CLCL
- 5
3.0 t
CLCL
- 20
3.5 t
CLCL
- 20
PSEN
Low to Address Float
Data Hold After Read
Data Float After Read
0
0
nS
nS
nS
t
CLCL
- 5
0.5 t
CLCL
- 5
RD
Low to Address Float
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