參數(shù)資料
型號: DS80C320-ECL
廠商: DALLAS SEMICONDUCTOR
元件分類: 微控制器/微處理器
英文描述: High-Speed/Low-Power Microcontrollers
中文描述: 8-BIT, MROM, 33 MHz, MICROCONTROLLER, PQFP44
封裝: TQFP-44
文件頁數(shù): 29/42頁
文件大?。?/td> 1501K
代理商: DS80C320-ECL
DS80C320/DS80C323
29 of 42
DS80C323 AC ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL
18 MHz
MIN
18 MHz
MAX
VARIABLE
CLOCK
MIN
0
1
1.5t
CLCL
-10
0.5t
CLCL
-11
VARIABLE
CLOCK
MAX
18
18
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
73
16
18
18
MHz
t
LHLL
t
AVLL
ns
ns
t
LLAX1
8
note 5
0.25t
CLCL
-5
note 5
ns
t
LLAX2
20
0.5t
CLCL
-7
ns
t
LLIV
112
2.5t
CLCL
-27
ns
t
LLPL
t
PLPH
t
PLIV
6
0.25t
CLCL
-7
2.25t
CLCL
-7
ns
ns
ns
118
104
2.25t
CLCL
-21
t
PXIX
0
0
ns
t
PXIZ
51
t
CLCL
-5
ns
t
AVIV1
140
3t
CLCL
-27
ns
t
AVIV2
162
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 18 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 35 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(guān)PDF資料
PDF描述
DS80C320-ENG High-Speed/Low-Power Microcontrollers
DS80C320-ENL High-Speed/Low-Power Microcontrollers
DS80C320-MCG High-Speed/Low-Power Microcontrollers
DS80C320-MCL High-Speed/Low-Power Microcontrollers
DS80C320-MNG High-Speed/Low-Power Microcontrollers
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