ST10F269Z2QX datasheet(148/161 Pages) STMICROELECTRONICS

148 / 161 page

ST10F269Z2Qx

148/161

Notes: 1. RW-delay and

A refer to the next following bus cycle.

2. Read data are latched with the same clock edge that triggers the address change and the rising RD edge. Therefore address

changes before the end of RD have no impact on read cycles.

3. Partially tested, guaranteed by design characterization.

t41 CC Latched CS hold after RD, WR

2 + tF

–

TCL - 10.5 + tF

–ns

t82 CC Address setup to RdCS, WrCS

(with RW-delay)

14.5 + 2tA

–

2 TCL - 10.5 +

2tA

–ns

t83 CC

Address setup to RdCS, WrCS

(no RW-delay)

2 + 2tA

–

TCL - 10.5 + 2tA

–ns

t46 SR

RdCS to Valid Data In

(with RW-delay)

–4 + tC

–

2 TCL - 21 + tC

t47 SR

RdCS to Valid Data In

(no RW-delay)

–

16.5 + tC

–

3 TCL - 21 + tC

t48 CC RdCS, WrCS Low Time

(with RW-delay)

15.5 + tC

–

2 TCL - 9.5

+ tC

–ns

t49 CC

RdCS, WrCS Low Time

(no RW-delay)

28 + tC

–

3 TCL - 9.5 + tC

–ns

t50 CC

Data valid to WrCS

10 + tC

–

2 TCL - 15 + tC

–ns

t51 SR

Data hold after RdCS

0–

–

t53 SR

Data float after RdCS

(with RW-delay)

–

16.5 + tF

–

2 TCL - 8.5 + tF

t68 SR

Data float after RdCS

(no RW-delay)

–4 + tF

–

TCL - 8.5 + tF

t55 CC Address hold after

RdCS, WrCS

-8.5 + tF

–

-8.5 + tF

–ns

t57 CC Data hold after WrCS

2 + tF

–

TCL - 10.5 + tF

–ns

Table 36 : Demultiplexed Bus Characteristics

Symbol

Parameter

Maximum CPU Clock

= 40MHz

Variable CPU Clock

1/2 TCL = 1 to 40MHz

Minimum

Maximum

Minimum

Maximum

ST10F269Z2QX Datasheet(PDF) 148 Page - STMicroelectronics

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