MB81F641642D Fujitsu Microelectronics, MB81F641642D Datasheet - Page 36

• Manufacturer Part Number: MB81F641642D
• Description: 4 x 1M x 16-Bit SDRAM
• Manufacturer: Fujitsu Microelectronics

MB81F641642D-75/-102/-102L
Preliminary (AE4.1E)
TIMING DIAGRAM – 5 : DQMU, DQML - INPUT MASK AND OUTPUT DISABLE (@ BL = 4)
CLK
DQML, DQMU
(@ Read)
I
(2 clocks)
DQZ
DQ
Q1
Q2
Hi-Z
Q4
(@ Read)
End of burst
DQML, DQMU
(@ Write)
I
(same clock)
DQD
DQ
D1
MASKED
D3
D4
(@ Write)
End of burst
TIMING DIAGRAM – 6 : PRECHARGE TIMING (APPLIED TO THE SAME BANK)
CLK
t
(min)
RAS
Command
PRECHARGE
ACTV
Note: PRECHARGE means ‘PRE’ or ‘PALL’.
36