VQ87C196KD 데이터 시트보기 (PDF) - Intel
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VQ87C196KD Datasheet PDF : 23 Pages
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M87C196KC M87C196KD
EXTERNAL CLOCK DRIVE
Symbol
Parameter
Min
Max
Units
Notes
1 TXLXL
Oscillator Frequency
35
16 0
MHz
KC KD-16
35
20 0
MHz
KD-20
TXLXL
Oscillator Frequency
62 5
286
ns
KC KD-16
50
286
KD-20
TXHXX
High Time
22
17
ns
KC KD-16
ns
KD-20
TXLXX
Low Time
22
17
ns
KC KD-16
ns
KD-20
TXLXH
TXHXL
Rise Time
Fall Time
10
ns
10
ns
Figure 10 External Clock Drive Waveforms
271116 – 26
271116 – 27
AC Testing inputs are driven at 2 4V for a Logic ‘‘1’’ and 0 45V for
a Logic ‘‘0’’ Timing measurements are made at 2 0V for a Logic
‘‘1’’ and 0 8V for a Logic ‘‘0’’
Figure 11 AC Testing Input Output Waveforms
271116 – 28
For Timing Purposes a Port Pin is no Longer Floating when a
100 mV change from Load Voltage Occurs and Begins to Float
when a 100 mV change from the Loaded VOH VOL Level occurs
IOL IOH e g15 mA
Figure 12 Float Waveforms
EXPLANATION OF AC SYMBOLS
Each symbol is two pairs of letters prefixed by ‘‘T’’ for time The characters in a pair indicate a signal and its
condition respectively Symbols represent the time between the two signal condition points
Conditions
H High
L Low
V Valid
X No Longer Valid
Z Floating
Signals
A Address
B BHE
C CLKOUT
D DATA
G Buswidth
H HOLD
HA HLDA
L ALE ADV
BR BREQ
R RD
W WR WRH WRL
X XTAL1
Y READY
Q Data Out
14
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