TS83C51RB2-VCJD View Datasheet(PDF) - Atmel Corporation
Part Name
Description
Manufacturer
TS83C51RB2-VCJD Datasheet PDF : 74 Pages
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TS80C51RA2/RD2
TS83C51RB2/RC2/RD2
TS87C51RB2/RC2/RD2
10.5.11. External Clock Drive Characteristics (XTAL1)
Symbol
TCLCL
Table 46. AC Parameters
Parameter
Min
Oscillator Period
25
Max
Units
ns
TCHCX
High Time
5
ns
TCLCX
Low Time
5
ns
TCLCH
Rise Time
5
ns
TCHCL
Fall Time
5
ns
TCHCX/TCLCX Cyclic ratio in X2 mode
40
60
%
10.5.12. External Clock Drive Waveforms
VCC-0.5 V
0.45 V
0.7VCC
0.2VCC-0.1 V
TCHCL
TCLCX
TCHCX
TCLCH
TCLCL
Figure 30. External Clock Drive Waveforms
10.5.13. AC Testing Input/Output Waveforms
INPUT/OUTPUT
VCC-0.5 V
0.45 V
0.2VCC+0.9
0.2VCC-0.1
Figure 31. AC Testing Input/Output Waveforms
AC inputs during testing are driven at VCC - 0.5 for a logic “1” and 0.45V for a logic “0”. Timing measurement
are made at VIH min for a logic “1” and VIL max for a logic “0”.
10.5.14. Float Waveforms
FLOAT
VOH-0.1 V VLOAD
VOL+0.1 V
VLOAD+0.1 V
VLOAD-0.1 V
Figure 32. Float Waveforms
Rev. C - 06 March, 2001
71
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