參數(shù)資料
型號(hào): W77LE58F-25
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, PQFP44
封裝: QFP-44
文件頁數(shù): 73/81頁
文件大小: 657K
代理商: W77LE58F-25
Preliminary W77LE58
Publication Release Date: August 1999
- 73 - Revision A1
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
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
AC SPECIFICATION
PARAMETER
SYMBOL
VARIABLE
CLOCK
MIN.
VARIABLE
CLOCK
MAX.
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
1/t
CLCL
, 3V
0
25
MHz
nS
nS
nS
nS
1.5 t
CLCL
- 5
0.5 t
CLCL
- 5
0.5 t
CLCL
- 5
0.5 t
CLCL
- 5
t
LLIV
2.5t
CLCL
- 20
nS
t
LLPL
t
PLPH
0.5 t
CLCL
- 5
2.0 t
CLCL
- 5
nS
nS
PSEN Pulse Width
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