EM639165TS-75 データシートの表示（PDF） - Etron Technology

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EM639165TS-75

8Mega x 16bits SDRAM

Etron Technology 

EM639165

FUNCTION TRUTH TABLE (continued)

Current State /CS /RAS /CAS /WE Address

Command Action

PRE -

H X X XX

CHARGING

L H H HX

DESEL NOP (Idle after tRP)

NOP NOP (Idle after tRP)

L H H L BA

TBST ILLEGAL*2

LH

READ /

L X BA, CA, A10 WRITE ILLEGAL*2

L L H H BA, RA

ACT ILLEGAL*2

L L H L BA, A10

PRE /

NOP*4 (Idle after tRP)

PREA

L L L HX

Op-Code,

L

L

L

L Mode-Add

REFA ILLEGAL

MRS ILLEGAL

ROW

H X X XX

ACTIVATING

L H H HX

DESEL NOP (Row Active after tRCD)

NOP NOP (Row Active after tRCD)

L H H L BA

TBST ILLEGAL*2

LH

READ /

L X BA, CA, A10

ILLEGAL*2

WRIT E

L L H H BA, RA

ACT ILLEGAL*2

L L H L BA, A10

PRE /

PREA ILLEGAL*2

L L L HX

Op-Code,

L

L

L

L Mode-Add

REFA ILLEGAL

MRS ILLEGAL

Preliminary

9

Rev 1.0 Feb. 2001

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