C165 datasheet(69/77 Pages) INFINEON

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C165

Data Sheet

V2.0, 2000-12

AC Characteristics

CLKOUT and READY (Standard Supply Voltage)

(Operating Conditions apply)

Parameter

Symbol

Max. CPU Clock

= 25 MHz

Variable CPU Clock

1 / 2TCL = 1 to 25 MHz

Unit

min.

max.

min.

max.

CLKOUT cycle time

t29 CC 40

2TCL

CLKOUT high time

t30 CC 14

–TCL - 6

–

CLKOUT low time

t31 CC 10

–

TCL - 10

–

CLKOUT rise time

t32 CC –

–4ns

CLKOUT fall time

t33 CC –

–4ns

CLKOUT rising edge to

ALE falling edge

t34 CC 0 + tA

10 +

0 +

10 +

Synchronous READY

setup time to CLKOUT

t35 SR 14

–

Synchronous READY

hold time after CLKOUT

t36 SR 4

–

4–ns

Asynchronous READY

low time

t37 SR 54

–

2TCL +

t58 –ns

Asynchronous READY

setup time1)

1) These timings are given for test purposes only, in order to assure recognition at a specific clock edge.

t58 SR 14

–

Asynchronous READY

hold time1)

t59 SR 4

–

4–ns

Async. READY hold time

after RD, WR high

(Demultiplexed Bus)2)

2) Demultiplexed bus is the worst case. For multiplexed bus 2TCL are to be added to the maximum values. This

adds even more time for deactivating READY.

The 2

tA and tC refer to the next following bus cycle, tF refers to the current bus cycle.

The maximum limit for

t60 must be fulfilled if the next following bus cycle is READY controlled.

t60 SR 0

+ 2

tA +

0TCL - 20

+ 2

tA + tC

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