80C196KC Datasheet, PDF (17/25 Pages) Intel Corporation – COMMERCIAL/EXPRESS CHMOS MICROCONTROLLER

EXTERNAL CLOCK DRIVE (8XC196KC20)
Symbol
Parameter
Min
1 T_XLXL
Oscillator Frequency
8
T_XLXL
Oscillator Period
50
T_XHXX
High Time
17
T_XLXX
Low Time
17
T_XLXH
Rise Time
T_XHXL
Fall Time
EXTERNAL CLOCK DRIVE WAVEFORMS
8XC196KC 8XC196KC20
Max
Units
20 0
MHz
125
ns
ns
ns
8
ns
8
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 V_SS 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
FLOAT WAVEFORMS
270942 – 42
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 V_OH V_OL Level occurs
I_OL I_OH e g15 mA
17