Maxim-integrated DS80C390 Manual do Utilizador descarregar pdf (Página 36)

DS80C390

36 of 58 110199

AVDV1

0.75 t

MCS

-20 ns C

= 0

+0.375)

•

MCS

-20 1≤ C

≤ 3

Port 0 Address, Port 4 CE,

Port 5 PCE to Valid Data In

+1.375)•t

MCS

-20 4 ≤ C

≤ 7

AVDV2

0.875 t

MCS

-20 ns C

= 0

+0.5)•t

MCS

-20 1≤ C

≤ 3

Port 2, 4 Address to Valid

Data In

+1.5)•t

MCS

-20 4 ≤ C

≤ 7

LLWL

0.125 t

MCS

-5 0.125 t

MCS

+5 ns C

0.25t

MCS

-5 0.25t

MCS

1 ≤ C

≤ 3

ALE Low to RD or WR

Low

1.25 t

MCS

-10

1.25 t

MCS

+10

4 ≤ C

≤ 7

AVWL1

0.25 t

MCS

-5 ns C

= 0

0.5t

MCS

-5

1 ≤ C

≤ 3

Port 0 Address, Port 4 CE,

Port 5 PCE to RD or WR

Low

2.5 t

MCS

-10

4 ≤ C

≤ 7

AVWL2

0.375 t

MCS

-5 ns C

= 0

0.625t

MCS

-5

1 ≤ C

≤ 3

Port 2, 4 Address to or WR

Low

2.625 t

MCS

-10

4 ≤ C

≤ 7

Data Valid to WR

Transition

QVWX

-5 ns

Data hold after WR high

WHQX

0.25 t

MCS

-5 ns C

= 0

0.5t

MCS

-5

1 ≤ C

≤ 3

1.5 t

MCS

-10

4 ≤ C

≤ 7

RD Low to Address Float

RLAZ

-(0.125 t

MCS

-5) ns

0≤ C

≤ 7

WHLH

0 10 ns C

= 0

0.25 t

MCS

-5 0.25 t

MCS

1 ≤ C

≤ 3

RD or WR High to ALE,

Port 4 CE or Port 5 PCE

High

1.25 t

MCS

-10 1.25 t

MCS

+10

4 ≤ C

≤ 7

NOTES FOR MOVX CHARACTERISTICS:

1. All parameters apply to both commercial and industrial temperature operation unless otherwise noted.

2. CST is the stretch cycle value as determined by the MD2, MD1, & MD0 bits of the CKCON register.

MCS

is a time period determined by the stretch cycle value, shown in the following table.

MCS

TIME PERIODS

System Clock Selection

2X4X/

CD1 CD0 t

MCS

1 0 0 1 t

CLCL

0 0 0 2 t

CLCL

X 1 0 4 t

CLCL

X 1 1 1024 t

CLCL

1 2 ... 31 32 33 34 35 36 37 38 39 40 41 ... 57 58

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Maxim-integrated DS80C390 Manual do Utilizador Página 36

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