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AT89LS53 датащи(PDF) 29 Page - ATMEL Corporation

номер детали AT89LS53
подробное описание детали  8-Bit Microcontroller with 12K Bytes Flash
PDF  35 Pages
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производитель  ATMEL [ATMEL Corporation]
домашняя страница  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT89LS53 датащи(HTML) 29 Page - ATMEL Corporation

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0851C–MICRO–3/06
AT89LS53
Serial Port Timing: Shift Register Mode Test Conditions
The values in this table are valid for VCC = 2.7V to 6V and Load Capacitance = 80 pF.
Symbol
Parameter
12 MHz Oscillator
Variable Oscillator
Units
Min
Max
Min
Max
tXLXL
Serial Port Clock Cycle Time
1.0
12tCLCL
µs
tQVXH
Output Data Setup to Clock
Rising Edge
700
10tCLCL - 133
ns
tXHQX
Output Data Hold After Clock
Rising Edge
50
2tCLCL - 117
ns
tXHDX
Input Data Hold After Clock
Rising Edge
0
0
ns
tXHDV
Clock Rising Edge to Input Data
Valid
700
10tCLCL - 133
ns
Shift Register Mode Timing Waveforms
AC Testing Input/Output Waveforms (1)
Notes:
1.
AC Inputs during testing are driven at VCC - 0.5V
for a logic 1 and 0.45V for a logic 0. Timing mea-
surements are made at VIH min. for a logic 1 and VIL
max. for a logic 0.
Float Waveforms (1)
Notes:
1.
For timing purposes, a port pin is no longer floating
when a 100 mV change from load voltage occurs. A
port pin begins to float when a 100 mV change from
the loaded VOH/VOL level occurs.



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