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AN2021 데이터시트(PDF) 36 Page - STMicroelectronics

부품명 AN2021
상세설명  The ST10F272B and ST10F272E are members of the STMicroelectronics
PDF  39 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN2021 데이터시트(HTML) 36 Page - STMicroelectronics

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Electrical characteristics
AN2021
36/39
5.2.2
Hi-speed synchronous serial interface (SSC)
The maximum baudrate of the SSC in the ST10F272 is 8 Mbaud whereas it is 10 Mbaud in
the ST10F269. For CPU frequencies strictly higher than 32 MHz, the minimum value in the
SSCBR register (prescaler value) must not be lower than 2.
t28 CC
Address/Unlatched
CS hold after RD,
WR
0 (no tF)
-5 + tF
(tF > 0)
-0 + tF
-
0 (no tF)
-5 + tF
(tF > 0)
-0 + tF
-
t39SR
Latched CS low to
valid data in
-
3 TCL - 19
+ 2tA + tC
-
3 TCL - 21
+ 2tA + tC
18.5 + 2tA
+ tC
-
16.5 +
2tA +
tC
-
t82CC
Address setup to
RdCS, WrCS (with
RW delay)
2 TCL -
10.5 + 2tA
-
2 TCL - 11
+ 2tA
-
14.5 + 2tA
-
14 +
2tA
-
Table 21.
Demultiplexed bus timings (continued)
Symbol
Parameter
ST10F269
ST10F272
ST10F269
@fCPU = 40 MHz
ST10F272
@fCPU =
40 MHz
Min
Max
Min
Max
Min
Max
Min
Max



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