80C196KC データシートの表示（PDF） - Rochester Electronics
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80C196KC Datasheet PDF : 26 Pages
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EXTERNAL CLOCK DRIVE (8XC196KC20)
Symbol
Parameter
Min
1/T XLXL
Oscillator Frequency
8
TXLXL
Oscillator Period
50
TXHXX
High Time
17
TXLXX
Low Time
17
TXLXH
Rise Time
TXHXL
Fall Time
EXTERNAL CLOCK DRIVE WAVEFORMS
8XC196KC/8XC196KC20
Max
20.0
125
8
8
Units
MHz
ns
ns
ns
ns
ns
EXTERNAL CRYSTAL CONNECTIONS
270942 ±21
EXTERNAL CLOCK CONNECTIONS
270942 ±41
NOTE:
Keep oscillator components close to chip and use
short, direct traces to XTAL1, XTAL2 and VSS. When
using crystals, C1 e C2 20 pF. When using ceramic
resonators, consult manufacturer for recommended cir-
cuitry.
AC TESTING INPUT, OUTPUT WAVEFORMS
NOTE:
Required if TTL driver used.
Not needed if CMOS driver is used.
270942 ±42
FLOAT WAVEFORMS
270942 ±22
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''.
270942 ±23
For Timing Purposes a Port Pin is no Longer Floating when a
150 mV change from Load Voltage Occurs and Begins to Float
when a 150 mV change from the Loaded VOH/V OL Level occurs;
IOL/I OH e g15 mA.
17
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