IDT7201LA30D(1997) 查看數據表（PDF） - Integrated Device Technology

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IDT7201LA30D
(Rev.:1997)

CMOS ASYNCHRONOUS FIFO 256 x 9, 512 x 9, 1,024 x 9

Integrated Device Technology 

IDT7200/7201A/7202A CMOS ASYNCHRONOUS FIFO

256 x 9, 512 x 9 and 1,024 x 9

TABLE I—RESET AND RETRANSMIT

Single Device Configuration/Width Expansion Mode

Mode

Reset

Retransmit

Read/Write

Inputs

RS

RT

XI

0

X

0

1

0

0

1

1

0

NOTE:

1. Pointer will increment if flag is High.

MILITARY, INDUSTRIAL AND COMMERCIAL TEMPERATURE RANGES

Internal Status

Read Pointer

Write Pointer

Location Zero

Location Zero

Location Zero

Increment(1)

Unchanged

Increment(1)

Outputs

EF

FF

0

1

X

X

X

X

HF

1

X

X

2679 tbl 09

TABLE II—RESET AND FIRST LOAD TRUTH TABLE

Depth Expansion/Compound Expansion Mode

Mode

Inputs

Internal Status

RS

FL

XI

Read Pointer

Write Pointer

Reset First Device

0

0

(1)

Location Zero

Location Zero

Reset All Other Devices

0

1

(1)

Location Zero

Location Zero

Read/Write

1

X

(1)

X

X

Outputs

EF

FF

0

1

0

1

X

X

NOTE:

2679 tbl 10

1. XI is connected to XO of previous device. See Figure 14. RS = Reset Input, FL/RT = First Load/Retransmit, EF = Empty Flag Output, FF = Flag Full Output,

XI = Expansion Input, HF = Half-Full Flag Output

W

D

9

FULL

RS

XO

FF

IDT EF

7200/

9 7201A/

9

7202A FL

XI

XO

FF

IDT

EF

9

7200/

7201A/

7202A FL

FF

9

XI

XO

IDT

EF

7200/

7201A/

7202A

FL

XI

R

Q

VCC

EMPTY

2679 drw 16

Figure 14. Block Diagram of 768 x 9, 1,536 x 9, 3,072 x 9 FIFO Memory (Depth Expansion)

11

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