參數(shù)資料
型號(hào): S83C51RB-20
廠商: INTEL CORP
元件分類(lèi): 微控制器/微處理器
英文描述: 8-BIT, MROM, 20 MHz, MICROCONTROLLER, PQFP44
封裝: QFP-44
文件頁(yè)數(shù): 7/20頁(yè)
文件大?。?/td> 1665K
代理商: S83C51RB-20
8XC51RARBRC
EXTERNAL CLOCK DRIVE
Symbol
Parameter
Min
Max
Units
1TCLCL
Oscillator Frequency
8XC51RX
35
12
MHz
8XC51RX-1
35
16
8XC51RX-20
35
20
8XC51RX-24
35
24
TCHCX
High Time
035 TOSC
065 TOSC
ns
TCLCX
Low Time
035 TOSC
065 TOSC
ns
TCLCH
Rise Time
8XC51RX
20
ns
8XC51RX-24
10
ns
TCHCL
Fall Time20
ns
8XC51RX
20
ns
8XC51RX-24
10
ns
EXTERNAL CLOCK DRIVE WAVEFORM
272659 – 16
AC TESTING INPUT OUTPUT WAVEFORMS
272659 – 17
AC Inputs during testing are driven at VCCb05V for a Logic ‘‘1’’
and 045V for a Logic ‘‘0’’ Timing measurements are made at VIH
min for a Logic ‘‘1’’ and VIL max for a Logic ‘‘0’’
FLOAT WAVEFORMS
272659 – 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 VOL level occurs
IOL IOH e g20 mA
15
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