參數(shù)資料
型號: TS87C51RD2-VCLD
元件分類: 8位微控制器
英文描述: 8-BIT MICROCONTROLLER
中文描述: 8位微控制器
文件頁數(shù): 69/74頁
文件大?。?/td> 689K
代理商: TS87C51RD2-VCLD
Rev. C - 06 March, 2001
71
TS80C51RA2/RD2
TS83C51RB2/RC2/RD2
TS87C51RB2/RC2/RD2
10.5.11. External Clock Drive Characteristics (XTAL1)
10.5.12. External Clock Drive Waveforms
Figure 30. External Clock Drive Waveforms
10.5.13. AC Testing Input/Output Waveforms
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
Figure 32. Float Waveforms
Table 46. AC Parameters
Symbol
Parameter
Min
Max
Units
TCLCL
Oscillator Period
25
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
%
VCC-0.5 V
0.45 V
0.7VCC
0.2VCC-0.1 V
TCHCL
TCLCX
TCLCL
TCLCH
TCHCX
0.45 V
VCC-0.5 V
0.2VCC+0.9
0.2VCC-0.1
INPUT/OUTPUT
VOL+0.1 V
VOH-0.1 V
FLOAT
VLOAD
VLOAD+0.1 V
VLOAD-0.1 V
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