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參數資料
型號: W77IE58
廠商: WINBOND ELECTRONICS CORP
元件分類: 微控制器/微處理器
英文描述: 8-BIT MICROCONTROLLER
中文描述: 8-BIT, FLASH, 25 MHz, MICROCONTROLLER, PDIP40
封裝: DIP-40
文件頁數: 82/90頁
文件大小: 409K
代理商: W77IE58
Preliminary W77IE58
- 82 -
Notes:
*1. RST pin is a Schmitt trigger input.
*2. P0, ALE and
PSEN
are tested in the external access mode.
*3. XTAL1 is a CMOS input.
*4. Pins of P1, P2, P3 can source a transition current when they are being externally driven from 1 to 0. The transition
current reaches its maximum value when VIN approximates to 2V.
AC ELECTRICAL CHARACTERISTICS
t
CLCL
t
CLCX
t
CHCX
t
CLCH
t
CHCL
Note: Duty cycle is 50%.
External Clock Characteristics
PARAMETER
SYMBOL
MIN.
TYP.
MAX.
UNITS
NOTES
Clock High Time
t
CHCX
12.5
-
-
nS
Clock Low Time
t
CLCX
12.5
-
-
nS
Clock Rise Time
t
CLCH
-
-
10
nS
Clock Fall Time
t
CHCL
-
-
10
nS
AC Specification
PARAMETER
SYMBOL
VARIABLE
CLOCK
MIN.
VARIABLE
CLOCK
MAX.
UNITS
Oscillator Frequency
1/t
CLCL
1/t
CLCL
, 3V
0
25
MHz
ALE Pulse Width
t
LHLL
1.5 t
CLCL
- 5
nS
Address Valid to ALE Low
t
AVLL
0.5 t
CLCL
- 5
nS
Address Hold After ALE Low
t
LLAX1
0.5 t
CLCL
- 5
nS
Address Hold After ALE Low
for MOVX Write
t
LLAX2
0.5 t
CLCL
- 5
nS
ALE Low to Valid Instruction In
t
LLIV
2.5t
CLCL
- 20
nS
ALE Low to PSEN Low
t
LLPL
0.5 t
CLCL
- 5
nS
PSEN
Pulse Width
t
PLPH
2.0 t
CLCL
- 5
nS
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