S83C196MD View Datasheet(PDF) - Intel
Part Name
Description
Manufacturer
S83C196MD Datasheet PDF : 25 Pages
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8XC196MD
EXTERNAL CLOCK DRIVE
Symbol
Parameter
1 TXLXL
TXLXL
TXHXX
TXLXX
TXLXH
TXHXL
Oscillator Frequency
Oscillator Period
High Time
Low Time
Rise Time
Fall Time
EXTERNAL CRYSTAL CONNECTIONS
Min
Max
Units
8
16 0
MHz
62 5
125
ns
22
ns
22
ns
10
ns
10
ns
EXTERNAL CLOCK CONNECTIONS
272323 – 8
NOTE
Keep oscillator components close to chip and use
short direct traces to XTAL1 XTAL2 and VSS When
using crystals C1 e 20 pF C2 e 20 pF When using
ceramic resonators consult manufacturer for recom-
mended circuitry
EXTERNAL CLOCK DRIVE WAVEFORMS
Required if TTL driver used
Not needed if CMOS driver is used
272323 – 9
272323 – 10
An external oscillator may encounter as much as a 100 pF load at XTAL1 when it starts-up This is due to
interaction between the amplifier and its feedback capacitance Once the external signal meets the VIL and
VIH specifications the capacitance will not exceed 20 pF
AC TESTING INPUT OUTPUT WAVEFORMS
FLOAT WAVEFORMS
272323 – 11
AC Testing inputs are driven at 3 5V 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’’
18
272323 – 12
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
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