ST10F272 datasheet(158/179 Pages) STMICROELECTRONICS

номер детали	ST10F272

подробное описание детали	16-bit MCU with 256 Kbyte Flash memory and 20 Kbyte RAM

PDF	179 Pages

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производитель	STMICROELECTRONICS [STMicroelectronics]

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158 / 179 page

Electrical characteristics

ST10F272

158/179

t39

Latched CS low to Valid Data

–

16.5 + tC +

+ 2tA

–

3TCL – 21 +

+ tC + 2tA

t40

Latched CS hold after RD, WR

27 + tF

–

3TCL – 10.5 + tF

–ns

t42

ALE fall. edge to RdCS, WrCS

(with RW delay)

7 + tA

–

TCL – 5.5 + tA

–ns

t43

ALE fall. edge to RdCS, WrCS

(no RW delay)

– 5.5 + tA

–

– 5.5 + tA

–ns

t44

Address float after RdCS,

WrCS (with RW delay)1

–

1.5

–

1.5

t45

Address float after RdCS,

WrCS (no RW delay)1

–

TCL + 1.5

t46

RdCS to Valid Data In

(with RW delay)

–4 + tC

–

2TCL – 21 + tC

t47

RdCS to Valid Data In

(no RW delay)

–16.5 + tC

–

3TCL – 21 + tC

t48

RdCS, WrCS Low Time

(with RW delay)

15.5 + tC

–

2TCL – 9.5 + tC

–ns

t49

RdCS, WrCS Low Time

(no RW delay)

28 + tC

–

3TCL – 9.5 + tC

–ns

t50

Data valid to WrCS

10 + tC

–

2TCL – 15 + tC

–ns

t51

Data hold after RdCS

0–

–

t52

Data float after RdCS1

–

16.5 + tF

–

2TCL – 8.5 + tF

t54

Address hold after

RdCS, WrCS

6 + tF

–

2TCL – 19 + tF

–ns

t56

Data hold after WrCS

6 + tF

–

2TCL – 19 + tF

–ns

Table 77.

Multiplexed bus timings (continued)

Symbol

Parameter

FCPU = 40 MHz

TCL = 12.5 ns

Variable CPU Clock

1/2 TCL = 1 to 64MHz

min.

max.

min.

max.

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