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参数资料
| 型号： | TSC87C51-25MG |
| 厂商： | ATMEL CORP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, OTPROM, 25 MHz, MICROCONTROLLER, CDIP40 |
| 封装： | 0.600 INCH, CERAMIC, DIP-40 |
| 文件页数： | 13/22页 |
| 文件大小： | 187K |
| 代理商： | TSC87C51-25MG |
TSC87C51
20
Rev. E
– July 03, 2000
External Clock Drive Characteristics (XTAL1)
Symbol
Parameter
Min
Max
Units
TCLCL
Oscillator Period
40
ns
TCHCX
High Time
5
ns
TCLCX
Low Time
5
ns
TCLCH
Rise Time
5
ns
TCHCL
Fall Time
5
ns
External Clock Drive Waveforms
VCC–0.5V
0.45V
0.7VCC
0.2VCC–0.1
TCHCL
TCLCX
TCLCL
TCLCH
TCHCX
AC Testing Input/Output Waveforms
INPUT/OUTPUT
0.2 VCC + 0.9
0.2 VCC – 0.1
VCC –0.5 V
0.45 V
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”.
Float Waveforms
FLOAT
VOH – 0.1 V
VOL + 0.1 V
VLOAD
VLOAD + 0.1 V
VLOAD – 0.1 V
For timing purposes as 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 VOH/VOL level occurs. IOL/IOH
≥ ± 20mA.
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