LM9830VJDX NSC [National Semiconductor], LM9830VJDX Datasheet - Page 9

• Manufacturer Part Number: LM9830VJDX
• Description: LM9830 36-Bit Color Document Scanner
• Manufacturer: NSC [National Semiconductor]

Note: RD will stay low during consecutive read operations.
DB0-DB7
A0-A17
RD
RD (AUTOFEED)
ALE (SELECTIN)
WR (STROBE)
0.5MCLK
ALE (SELECTIN)
RD (AUTOFEED)
ALE (SELECTIN)
RD (AUTOFEED)
DB0-DB7
WR (STROBE)
WR (STROBE)
A0-A17
CS (INIT)
t
WR F ADDR SETUP
D0 - D7
WR
CS (INIT)
CS (INIT)
D0 - D7
D0 - D7
t
RD ACCESS
Figure 5: µP Mode Address Latch
t
WR DATA SETUP
t
Figure 7: µP Mode Read
RD SETUP
Figure 6: µP Mode Write
Figure 9: SRAM Read
Figure 8: SRAM Write
t
t
ALE SETUP
WR SETUP
Address
t
Address
WR R ADDR SETUP
t
ALE
Address
t
9
WR
Data
t
0.5MCLK
WR
Data
Data
Data
t
ALE HOLD
t
RD TRI-STATE
t
WR HOLD
t
WR DATA HOLD
NOTE: CS and WR are ORed together.
t
of CS or WR, whichever goes high first.
WR SETUP
t
WR ADDR HOLD
NOTE: CS and RD are ORed together.
t
t
Address
RD ACCESS
RD TRI-STATE
and t
begins when both CS and WR go low.
Data
WR HOLD
begins when either CS or WR go high
refer to the first rising edge
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