EM639165 Etron Technology Inc., EM639165 Datasheet - Page 9

• Manufacturer Part Number: EM639165
• Description: 8Mega x 16bits SDRAM
• Manufacturer: Etron Technology Inc.

Preliminary
FUNCTION TRUTH TABLE (continued)
Current State
ACTIVATING
CHARGING
PRE -
ROW
/CS
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
/RAS /CAS /WE Address
X
H
H
H
X
H
H
H
L
L
L
L
L
L
L
L
X
H
H
H
H
X
H
H
H
H
L
L
L
L
L
L
X
H
X
H
H
X
H
X
H
H
L
L
L
L
L
L
BA
X
X
BA, CA, A10
BA, RA
BA, A10
X
Op-Code,
Mode-Add
X
X
BA, CA, A10
BA, RA
BA, A10
X
Op-Code,
Mode-Add
BA
9
Command
DESEL
READ /
WRITE
DESEL
READ /
WRITE
TBST
PREA
TBST
PRE /
PREA
PRE /
REFA
REFA
NOP
MRS
NOP
MRS
ACT
ACT
ILLEGAL*2
Action
NOP (Idle after tRP)
NOP (Idle after tRP)
ILLEGAL*2
ILLEGAL*2
ILLEGAL*2
NOP*4 (Idle after tRP)
ILLEGAL
ILLEGAL
NOP (Row Active after tRCD)
NOP (Row Active after tRCD)
ILLEGAL*2
ILLEGAL*2
ILLEGAL*2
ILLEGAL
ILLEGAL
Rev 1.0
EM639165
Feb. 2001