參數資料
型號: DS80C320-ECL
英文描述: High-Speed/Low-Power Micro
中文描述: High-Speed/Low-Power微
文件頁數: 25/42頁
文件大?。?/td> 1501K
代理商: DS80C320-ECL
DS80C320/DS80C323
25 of 42
DS80C320 AC CHARACTERISTICS UP TO 33 MHz
PARAMETER
SYMBOL
33 MHz
MIN
33 MHz
MAX
VARIABLE
CLOCK
MIN
0
1
1.5t
CLCL
-10
0.5t
CLCL
-11
VARIABLE
CLOCK
MAX
33
33
UNITS
Oscillator Frequency
(Ext. Osc.)
(Ext. Crystal)
ALE Pulse Width
Port 0 Address Valid
to ALE Low
Address Hold After
ALE Low
Address Hold After
ALE Low for MOVX
WR
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
Instruction In
Port 2 Address to Valid
Instruction In
PSEN
Low to
Address Float
1/t
CLCL
0
1
35
4
33
33
MHz
t
LHLL
t
AVLL
ns
ns
t
LLAX1
2
note 5
0.25t
CLCL
-5
note 5
ns
t
LLAX2
8
0.5t
CLCL
-7
ns
t
LLIV
49
2.5t
CLCL
-27
ns
t
LLPL
t
PLPH
t
PLIV
0.5
61
0.25t
CLCL
-7
2.25t
CLCL
-7
ns
ns
ns
48
2.25t
CLCL
-21
t
PXIX
0
0
ns
t
PXIZ
25
t
CLCL
-5
ns
t
AVIV1
64
3t
CLCL
-27
ns
t
AVIV2
73
3.5t
CLCL
-33
ns
t
PLAZ
note 5
note 5
ns
NOTES FOR DS80C323 AC ELECTRICAL CHARACTERISTICS:
All parameters apply to both commercial and industrial temperature range operation unless otherwise
noted. AC timing characteristics valid for oscillator frequency > 16 MHz.
1. All signals rated over operating temperature at 33 MHz.
2. All signals characterized with load capacitance of 80 pF except Port 0, ALE,
PSEN
,
RD
and
WR
at
100 pF. Note that loading should be approximately equal for valid timing.
3. Interfacing to memory devices with float times (turn off times) over 30 ns may cause contention. This
will not damage the parts but will cause an increase in operating current.
4. Specifications assume a 50% duty cycle for the oscillator. Port 2 timing will change with the duty
cycle variations.
5. Address is held in a weak latch until over driven by external memory.
相關PDF資料
PDF描述
DS80C320-ENG High-Speed/Low-Power Micro
DS80C320-QNL High-Speed/Low-Power Micro
DS80C320-MCG High-Speed/Low-Power Micro
DS80C320-MCL High-Speed/Low-Power Micro
DS80C320-MNG High-Speed/Low-Power Micro
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參數描述
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