83C196MC Intel Corporation, 83C196MC Datasheet - Page 15

• Manufacturer Part Number: 83C196MC
• Description: INDUSTRIAL MOTOR CONTROL MICROCONTROLLER
• Manufacturer: Intel Corporation

EXTERNAL CLOCK DRIVE
EXTERNAL CRYSTAL CONNECTIONS
EXTERNAL CLOCK DRIVE WAVEFORMS
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 V
V
AC TESTING INPUT OUTPUT WAVEFORMS
IH
NOTE
Keep oscillator components close to chip and use
short direct traces to XTAL1 XTAL2 and V
using crystals C1
ceramic resonators consult manufacturer for recom-
mended circuitry
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’’
specifications the capacitance will not exceed 20 pF
1 T
T
T
T
T
T
Symbol
XLXL
XHXX
XLXX
XLXH
XHXL
XLXL
e
20 pF C2
Oscillator Frequency
Oscillator Period
High Time
Low Time
Rise Time
Fall Time
e
Parameter
20 pF When using
270946– 14
270946–9
SS
When
EXTERNAL CLOCK CONNECTIONS
FLOAT WAVEFORMS
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 V
I
OL
Not needed if CMOS driver is used
Required if TTL driver used
62 5
I
Min
OH
22
22
8
e
s g
15 mA
Max
16 0
125
10
10
270946 –8
OH
V
OL
8XC196MC
Units
270946 –15
270946 –10
MHz
Level occurs
ns
ns
ns
ns
ns
IL
and
15