參數(shù)資料
型號(hào)： W78E58BF
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(shù)： 20/31頁
文件大?。?/td> 419K
代理商： W78E58BF
W78E58B
- 20 -
10. AC CHARACTERISTICS
The AC specifications are a function of the particular process used to manufacture the part, the ratings
of the I/O buffers, the capacitive load, and the internal routing capacitance. Most of the specifications
can be expressed in terms of multiple input clock periods (T
CP
), and actual parts will usually
experience less than a
±
20 nS variation. The numbers below represent the performance expected
from a 0.6 micron CMOS process when using 2 and 4 mA output buffers.
Clock Input Waveform
T
T
XTAL1
F
CH
CL
OP,
T
CP
PARAMETER
SYMBOL
F
OP
MIN.
0
TYP.
-
MAX.
40
UNIT
MHz
NOTES
1
Operating Speed
Clock Period
T
CP
25
-
-
nS
2
Clock High
T
CH
10
-
-
nS
3
Clock Low
T
CL
10
-
-
nS
3
Notes:
1. The clock may be stopped indefinitely in either state.
2. The T
CP
specification is used as a reference in other specifications.
3. There are no duty cycle requirements on the XTAL1 input.
Program Fetch Cycle
PARAMETER
SYMBOL
T
AAS
T
AAH
T
APL
MIN.
1 T
CP
-
1 T
CP
-
1 T
CP
-
-
TYP.
-
-
-
MAX.
-
-
-
UNIT
nS
nS
nS
NOTES
4
1, 4
4
Address Valid to ALE Low
Address Hold from ALE Low
ALE Low to
PSEN
Low
PSEN
Low to Data Valid
Data Hold after PSEN High
T
PDA
-
2 T
CP
nS
2
T
PDH
0
-
1 T
CP
nS
3
Data Float after PSEN High
ALE Pulse Width
T
PDZ
0
-
1 T
CP
nS
T
ALW
T
PSW
2 T
CP
-
3 T
CP
-
2 T
CP
3 T
CP
-
-
nS
nS
4
4
PSEN Pulse Width
Notes:
1. P0.0
P0.7, P2.0
P2.7 remain stable throughout entire memory cycle.
2. Memory access time is 3 T
CP
.
3. Data have been latched internally prior to PSEN going high.
4. "
" (due to buffer driving delay and wire loading) is 20 nS.
相關(guān)PDF資料
PDF描述
W78E58BP 8 BIT MICROCONTROLLER
W78E58F-16 8-BIT MICROCONTROLLER
W78E58F-24 8-BIT MICROCONTROLLER
W78E58P-16 8-BIT MICROCONTROLLER
W78E58P-24 8-BIT MICROCONTROLLER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
W78E58BP 制造商:WINBOND 制造商全稱:Winbond 功能描述:8 BIT MICROCONTROLLER
W78E58F-16 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER
W78E58F-24 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER
W78E58F-40 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER
W78E58M-16 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER
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