PDM34078SA10QTR 데이터 시트보기 (PDF) - Paradigm Technology

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PDM34078SA10QTR

3.3V 32K x 32 Fast CMOS Synchronous Static RAM with Burst Counter and Output Register

Paradigm Technology 

PDM34078

Pinout

Name

I/O Description

Name

I/O Description

A14-A2

A1, A0

DQ1-DQ32

NC

MODE(1)

ADV

ADSC

ADSP

GW

FT(1)

I Address Inputs A14-A2

I Address Inputs A1 & A0

I/O Read/Write Data

— No Connect

I Burst Sequence Select

I Burst Counter Advance

I Controller Address Status

I Processor Address Status

I Global Write

I Must be tied HIGH for

proper operation

CE, CE2, CE2

BWE

BW1-BW4

OE

CLK

ZZ

VCC

VCCQ

VSS

VSSQ

I Chip Enables

I Byte Write Enable

I Byte Write Enables

I Output Enable

I Clock

I Sleep Mode

— Power Supply (+3.3V)

— Output Power for DQ’s (+3.3V ±5%)

— Array Ground

— Output Ground for DQ’s

NOTE: 1.MODE and FT are DC operated pins. Do not alter input state while device is operating.

Burst Sequence Table

Burst Sequence

Interleaved(1)

Mode = NC or

VCC

External Address

A14-A2, A1, A0

1st Burst Address

A14-A2, A1, A0

2nd Burst Address

A14-A2, A1, A0

3rd Burst Address

A14-A2, A1, A0

A14-A2,0,0

A14-A2,0,1

A14-A2,1,0

A14-A2,1,1

Linear(2)

Mode = VSS

A14-A2,0,1

A14-A2,1,0

A14-A2,1,1

A14-A2,0,0

A14-A2,1,0

A14-A2,1,1

A14-A2,0,0

A14-A2,0,1

A14-A2,1,1

A14-A2,0,0

A14-A2,0,1

A14-A2,1,0

Note: 1. Interleaved = x86 and Pentium.

2. Linear = 680x0 and Power PC compatible.

Asynchronous Truth Table

Partial Truth Table for Writes

Operation

ZZ OE I/O Status

Read

Read

Write

Deselected

Sleep

L

L Data Out

L H High-Z

L X High-Z: Write Data In

L X High-Z

H X High-Z

NOTE:

1. L = Low, H = High, X = Don’t Care.

2. For a write operation following a read operation,

OE must be high before the input data required

setup time and held high through the input data

hold time.

3. This device contains circuitry that will ensure

the outputs will be in high-Z during powerup.

GW BWE BW1 BW2 BW3 BW4

Function

H H XXXX

READ

H L HHHH

READ

H

L

L HHH

WRITE Byte 1

H

L

L

L

L

L WRITE All Bytes

L X X X X X WRITE All Bytes

NOTE: 1. L = Low, H = High, X = Don’t Care.

2. Using BWE and BW1 through BW4, any one or

more bytes may be written.

4

Rev 1.0 - 5/01/98

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