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AN2556 Datasheet(PDF) 33 Page - STMicroelectronics

Part # AN2556
Description  Porting an application from the ST10F269Zx to the ST10F273Z4
PDF  35 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN2556 Datasheet(HTML) 33 Page - STMicroelectronics

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Electrical characteristics
AN2556
33/35
5.2.2
Hi-speed synchronous serial interface (SSC)
The maximum baudrate of the SSC in ST10F273Z4 is 8 Mbaud while it is 10 in
ST10F269Zx. For CPU frequencies strictly higher than 32 MHz, the minimum value of 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
-
t39 SR
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
-
t82 CC
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
ST10F269Zx
ST10F273Z4
ST10F269Zx
@fCPU = 40 MHz
ST10F273Z4
@fCPU = 40 MHz
Min
Max
Min
Max
Min
Max
Min
Max



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