IDT72125 Ver la hoja de datos (PDF) - Integrated Device Technology

Número de pieza

componentes Descripción

Fabricante

IDT72125

CMOS PARALLEL-TO-SERIAL FIFO 256 x 16, 512 x 16, 1024 x 16

Integrated Device Technology 

IDT72105, IDT72115, IDT72125,

256 x 16, 512 x 16, 1024 x 16 PARALLEL-TO-SERIAL CMOS FIFO

t WPW

W

t WC

COMMERCIAL TEMPERATURE RANGES

t WR

D 0–15

t DS

Figure 2. Write Operation

SOCP

1/t SOCP

0

1

t SOCW

t SOCW

SO

(First Device in Width Expansion Mode)

t SOHZ

SO

(Single Device Mode or Second

Device in Width Expansion Mode)

t SOLZ

NOTE:

t SOPD

1. In Single Device Mode, SO will not tri-state except after reset.

Figure 3. Read Operation

t DH

2665 drw 05

n–1

2665 drw 06

SOCP

LAST WRITE

IGNORED

WRITE

FIRST READ

0

1

n–1

ADDITIONAL READS FIRST WRITE

0

1

n–1

W

t WFF

FF

t SOCFF

LAST READ

Figure 4. Full Flag from Last Write to First Read

NO READ

ADDITIONAL

FIRST WRITE

WRITES

W

0

SOCP

EF

SO VALID

1 n–1

NOTE 1

t SOCEF

t SOPD

t SOCFF

VALID

NOTE:

1. SOCP should not be clocked until EF goes HIGH.

Figure 5. Empty Flag from Last Read to First Write

2665 drw 07

FIRST READ

0 1 n–1

VALID

2665 drw 08

5.35

6

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