LH543601M-35 データシートの表示（PDF） - Sharp Electronics

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LH543601M-35

256 × 36 × 2 Bidirectional FIFO

Sharp Electronics 

LH543601

256 × 36 × 2 Bidirectional FIFO

PIN DESCRIPTIONS

PIN

PIN TYPE 1

DESCRIPTION

VCC, VSS

RS

GENERAL

V

Power, Ground

I

Reset

PORT A

CKA

I

Port A Free-Running Clock

R/WA

I

Port A Edge-Sampled Read/Write Control

ENA

I

Port A Edge-Sampled Enable

A0A, A1A, A2A

I

Port A Edge-Sampled Address Pins

OEA

I

Port A Level-Sensitive Output Enable

REQA

I

Port A Request/Enable

RT2

I

FIFO #2 Retransmit

D0A – D35A

I/O/Z Port A Bidirectional Data Bus

FF1

O

FIFO #1 Full Flag (Write Boundary)

AF1

O

FIFO #1 Programmable Almost-Full Flag (Write Boundary)

HF1

O

FIFO #1 Half-Full Flag

AE2

O

FIFO #2 Programmable Almost-Empty Flag (Read Boundary)

EF2

O

FIFO #2 Empty Flag (Read Boundary)

MBF2

O

New-Mail-Alert Flag for Mailbox #2

PFA

O

Port A Parity Flag

ACKA

O

Port A Acknowledge

PORT B

CKB

I

Port B Free-Running Clock

R/WB

I

Port B Edge-Sampled Read/Write Control

ENB

I

Port B Edge-Sampled Enable

A0B

I

Port B Edge-Sampled Address Pin

OEB

I

Port B Level-Sensitive Output Enable

WS0, WS1

I

Port B Word-Width Select

REQB

I

Port B Request/Enable

RT1

I

FIFO #1 Retransmit

D0B – D35B

I/O/Z Port B Bidirectional Data Bus

FF2

O

FIFO #2 Full Flag (Write Boundary)

AF2

O

FIFO #2 Programmable Almost-Full Flag (Write Boundary)

HF2

O

FIFO #2 Half-Full Flag

AE1

O

FIFO #1 Programmable Almost-Empty Flag (Read Boundary)

EF1

O

FIFO #1 Empty Flag (Read Boundary)

MBF1

O

New-Mail-Alert Flag for Mailbox #1

PFB

O

Port B Parity Flag

ACKB

O

Port B Acknowledge

NOTE:

1. I = Input, O = Output, Z = High-Impedance, V = Power Voltage Level

6

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