M5M44260CJ-5 Ver la hoja de datos (PDF) - MITSUBISHI ELECTRIC

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M5M44260CJ-5

FAST PAGE MODE 4194304-BIT (262144-WORD BY 16-BIT) DYNAMIC RAM

MITSUBISHI ELECTRIC  

MITSUBISHI LSIs

M5M44260CJ,TP-5,-6,-7,-5S,-6S,-7S

FAST PAGE MODE 4194304-BIT (262144-WORD BY 16-BIT) DYNAMIC RAM

FUNCTION

In addition to normal read,write and read-modify-write operations

the M5M44260CJ, TP provides a number of other functions, e.g.,

fast page mode, RAS-only refresh and delayed-write. The input

conditions for each are shown in Table 1.

Table 1 Input conditions for each mode

Operation

RAS LCAS UCAS

Lower byte read

ACT ACT NAC

Upper byte read

Word read

ACT

ACT

NAC

ACT

ACT

ACT

Lower byte write

ACT ACT NAC

Upper byte write

Word write

ACT

ACT

NAC

ACT

ACT

ACT

RAS only refresh

Hidden refresh

CAS before RAS (Extended *) refresh

ACT

ACT

ACT

NAC

ACT

ACT

NAC

ACT

ACT

Self refresh *

Stand-by

ACT

NAC

ACT

DNC

ACT

DNC

Note : ACT : active, NAC : nonactive, DNC : don' t care, OPN : open

Inputs

W

NAC

NAC

NAC

ACT

ACT

ACT

DNC

DNC

DNC

DNC

DNC

OE

ACT

ACT

ACT

NAC

NAC

NAC

DNC

ACT

DNC

DNC

DNC

Row

address

APD

APD

APD

APD

APD

APD

APD

DNC

DNC

DNC

DNC

Column

address

APD

APD

APD

APD

APD

APD

DNC

DNC

DNC

DNC

DNC

Input/Output

DQ1~ DQ9~ Refresh Remark

DQ8

DQ16

DOUT OPN YES

OPN

DOUT

DIN

DNC

DOUT

DOUT

DNC

DIN

YES

YES

YES

YES

Fast

page

mode

identical

DIN

DIN

YES

OPN OPN YES

DOUT DOUT YES

OPN OPN YES

OPN OPN YES

OPN OPN

No

BLOCK DIAGRAM

ROW ADDRESS

STROBE INPUT RAS

LOWER BYTE CONTROL

COLUMN ADDRESS LCAS

STROBE INPUT

UPPER BYTE CONTROL UCAS

COLUMN ADDRESS

STROBE INPUT

WRITE CONTROL

INPUT

W

CLOCK GENERATOR

CIRCUIT

LOWER

UPPER

A0

A1

A2

A3

ADDRESS INPUTS A4

A5

A6

A7

A8

A0~A8

COLUMN DECODER

ROW &

COLUMN

ADDRESS

BUFFER

A0~ ROW

A8 DECODER

SENSE REFRESH

AMPLIFIER & I /O CONTROL

MEMORY CELL

(4194304 BITS)

(8)LOWER

DATA IN

BUFFER

(8)LOWER

DATA OUT

BUFFER

(8)UPPER

DATA IN

BUFFER

(8)UPPER

DATA OUT

BUFFER

2 M5M44260CJ,TP-5,-5S : Under development

VCC (5V)

VSS (0V)

DQ1

DQ2

DQ8

LOWER DATA

INPUTS /

OUTPUTS

VCC (5V)

VSS (0V)

DQ9

DQ10

DQ16

UPPER DATA

INPUTS /

OUTPUTS

VCC (5V)

VSS (0V)

OE

OUTPUT ENABLE

INPUT

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