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L7250 데이터시트(PDF) 15 Page - STMicroelectronics

부품명 L7250
상세설명  5V & 12V SPINDLE AND VCM MOTORS DRIVER
PDF  46 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L7250 데이터시트(HTML) 15 Page - STMicroelectronics

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L7250
1.4 Inverted clock serial port timing Table
Symbol
Parameter
Min
Max
Unit
Tcc
Serial clock period
30
ns
Tch
Serial clock high time
13
ns
Tcl
Serial clock low time
13
ns
Tcds
Serial data setup time to clock falling edge (write mode)
5
ns
Tcdh
Serial clock falling edge to serial data hold time (write mode)
4
ns
Tedh
Serial clock falling edge to serial data hold time (read mode)
5
ns
Tvld
Serial clock rising edge to SDATA stable time (read mode)
Cload=5pF (see Note2)
Cload=50pF (see Note2)
11
15
ns
ns
Tel
Serial Enable low time
490
ns
Teh
Serial Enable high time
30
ns
Tefcr
Serial Enable falling edge to serial clock rising edge
17
ns
Tcrer
Serial clock rising edge to Serial enable rising edge
17
ns
Tdly
SDATA turn around delay time
0
ns
Note 1: All specifications with respect to 50% of signal switching thresholds
Note 2: In reading mode the clock frequency is limited by this parameter;
in fact the min ‘serial clock high time’ is defined by (Tvld+Tasu)
where Tasu = min ASIC setup time



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