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參數(shù)資料
| 型號(hào)： | BN87C51BH |
| 廠商： | INTEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, OTPROM, 12 MHz, MICROCONTROLLER, PQCC44 |
| 封裝： | PLASTIC, LCC-44 |
| 文件頁(yè)數(shù)： | 4/16頁(yè) |
| 文件大?。?/td> | 842K |
| 代理商： | BN87C51BH |
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AUTOMOTIVE 80C31BH/80C51BH/87C51
EXTERNAL CLOCK DRIVE
Symbol
Parameter
Min Max Units
1/T CLCL Oscillator Frequency 3.5 12
MHz
3.5
16
TCHCX
High Time
20
ns
TCLCX
Low Time
20
ns
TCLCH
Rise Time
20
ns
TCHCL
Fall Time
20
ns
EXTERNAL CLOCK DRIVE WAVEFORM
270419±17
SERIAL PORT TIMINGSHIFT REGISTER MODE
12 MHz
Variable
Symbol
Parameter
Oscillator
Units
Min
Max
Min
Max
TXLXL
Serial Port Clock Cycle Time
1.0
12TCLCL
m
s
TQVXH Output Data Setup to Clock Rising Edge
700
10TCLCLb133
ns
TXHQX Output Data Hold After Clock Rising Edge
50
2TCLCLb117
ns
TXHDX Input Data Hold After Clock Rising Edge
0
ns
TXHDV Clock Rising Edge to Input Data Valid
700
10TCLCLb133
ns
SHIFT REGISTER MODE TIMING WAVEFORMS
270419±15
AC TESTING INPUT, OUTPUT WAVEFORMS
270419±16
AC inputs during testing are driven at VCC b 0.5 for a Logic ``1''
and 0.45V for a Logic ``0.'' Timing measurements are made at VIH
min for a Logic ``1'' and VIL max for a Logic ``0''.
FLOAT WAVEFORMS
270419±18
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 VOH/V OL level occurs. IOL/I OH
t
g
20 mA.
12
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