80C32E_14 Datasheet, PDF (15/20 Pages) ATMEL Corporation – 8032 Pin and Instruction Compatible

80C32E
Table 7. External Clock Drive Characteristics (XTAL1)
Symbol
Parameter
Min
Max
Unit
T_CLCL
T_CHCX
T_CLCX
T_CLCH
T_CHCL
Oscillator Period
High Time
Low Time
Rise Time
Fall Time
33.33
ns
5
ns
5
ns
5
ns
5
ns
Figure 11. External Clock Drive Waveforms
V_CC-0.5 V
0.45 V
0.7V_CC
0.2V_CC-0.1V
T_CHCL
T_CLCX
T_CHCX
T_CLCH
T_CLCL
Figure 12. AC Testing Input/Output Waveforms
INPUT/OUTPUT
V_CC-0.5V
0.45V
0.2V_CC+0.9
0.2V_CC-0.1
Figure 13. Float Waveforms
AC inputs during testing are driven at V_CC - 0.5 for a logic “1” and 0.45V for a logic “0”.
Timing measurement are made at V_IH min for a logic “1” and V_IL max for a logic “0”.
FLOAT
V_OH-0.1V _VLOAD
V_OL+0.1V
V_LOAD+0.1V
V_LOAD-0.1V
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_OH/V_OL level
occurs. I_OL/I_OH ≥ ± 20 mA.
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4149N–AERO–04/07