参数资料
型号: TS87C52X2-VICR
厂商: ATMEL CORP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 40 MHz, MICROCONTROLLER, PQFP44
封装: PLASTIC, QFP-44
文件页数: 49/56页
文件大小: 790K
代理商: TS87C52X2-VICR
Rev.D - 16 November, 2000
53
TS80C32X2
TS87C52X2
TS80C52X2
10.5.11 External Clock Drive Characteristics (XTAL1)
10.5.12 External Clock Drive Waveforms
Figure 23. External Clock Drive Waveforms
10.5.13 AC Testing Input/Output Waveforms
Figure 24. 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 25. Float Waveforms
Table 36. 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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