AN2555 datasheet(31/33 Pages) STMICROELECTRONICS

No de pièce	AN2555

Description	Porting an application from the ST10F269Zx to the ST10F276Z5

PDF	33 Pages

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Fabricant	STMICROELECTRONICS [STMicroelectronics]

Site Internet	http://www.st.com

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AN2555 - Application note

Electrical characteristics

31/33

5.2.2

Hi-Speed Synchronous Serial Interface (SSC)

The Maximum Baudrate of the SSC in the ST10F276Z5 is 8 Mbaud whereas it is of 10 in the

ST10F269Zx. For CPU frequencies strictly higher than 32 MHz, the minimum value of the SSCBR

t28CC

Address/Unlatc

hed 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 14.

Multiplexed bus timings (continued)

Symbol

Parameter

ST10F269Zx

ST10F276Z5

ST10F269Zx

fCPU = 40 MHz

ST10F276Z5

fCPU = 40 MHz

min.

max.

min.

max.

min.

max.

min.

max.

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