MITSUBISHI LSIs

MH16V725BATJ -5, -6

Preliminary Spec.

MITSUBISHI

ELECTRIC

Oct.1.1998

HYPER PAGE MODE 1207959552 - BIT ( 16777216 - WORD BY 72 - BIT ) DYNAMIC RAM

MIT-DS-0271-0.0

(

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FUNCTION

The MH16V725BATJ provide, in addition to normal

read, write, and read-modify-write operations,

Table 1 Input conditions for each mode

Operation

/RAS

/CAS

a number of other functions, e.g., Hyper page mode, /CAS

before /RAS refresh, and delayed-write. The input conditions

for each are shown in Table 1.

Inputs

Input/Output

Refresh

Remark

/W

Row

address address

Column

Output

Read

Write (Early write)

Write (Delayed write)

Read-modify-write

/CAS before /RAS refresh

Standby

Hidden refresh

ACT

ACT

ACT

ACT

ACT

ACT

NAC

ACT

ACT

ACT

ACT

ACT

ACT

DNC

NAC

ACT

ACT

ACT

DNC

NAC

DNC

APD

APD

APD

APD

DNC

DNC

DNC

OPN

VLD

IVD

VLD

VLD

OPN

OPN

NO

NO

NO

NO

YES

YES

NO

Hyper page

mode

identical

Note : ACT : active, NAC : nonactive, DNC : don' t care, VLD : valid, IVD : Invalid, APD : applied, OPN : open

/OE

ACT

DNC

DNC

ACT

ACT

DNC

DNC

APD

APD

APD

APD

DNC

DNC

DNC

Input

VLD

VLD

VLD

DNC

DNC

OPN

OPN

4