EM639165 Etron Technology Inc., EM639165 Datasheet - Page 7

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

Preliminary
FUNCTION TRUTH TABLE (continued)
Current State
READ
WRIT E
/CS
H
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
/RAS /CAS /WE Address
X
H
H
H
H
X
H
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
L
L
X
H
H
H
H
X
H
H
H
H
L
L
L
L
L
L
L
L
X
X
BA, CA, A10
BA, CA, A10
BA, RA
BA, A10
X
Op-Code,
Mode-Add
X
X
BA, CA, A10
BA, CA, A10
BA, RA
BA, A10
X
Op-Code,
Mode-Add
BA
BA
7
Command Action
WRITEA
WRITE /
WRITEA
WRITE /
/READA
READA
DESEL
DESEL
READ /
TBST
READ
PREA
TBST
PREA
PRE /
REFA
PRE /
REFA
NOP
MRS
NOP
MRS
ACT
ACT
Bank Active / ILLEGAL*2
Terminate Burst, Precharge
Terminate Burst, Latch CA,Begin
Terminate Burst, Latch CA,Begin
NOP (Continue Burst to END)
Terminate Burst, Latch CA,Begin
NOP (Continue Burst to END)
NOP (Continue Burst to END)
ILLEGAL
ILLEGAL
NOP (Continue Burst to END)
Read, Determine Auto-Precharge*3
Terminate Burst, Latch CA,Begin
Write, Determine Auto-Precharge*3
Terminate Burst, Precharge
ILLEGAL
ILLEGAL
Terminate Burst
Read, Determine Auto-Precharge*3
Terminate Burst, Latch CA,Begin
Write, Determine Auto-Precharge*3
Bank Active / ILLEGAL*2
Rev 1.0
EM639165
Feb. 2001