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AN2021 Datasheet(PDF) 36 Page - STMicroelectronics

Part # AN2021
Description  The ST10F272B and ST10F272E are members of the STMicroelectronics
PDF  39 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN2021 Datasheet(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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