參數(shù)資料
型號(hào): LM9830VJDX
廠(chǎng)商: NATIONAL SEMICONDUCTOR CORP
元件分類(lèi): 消費(fèi)家電
英文描述: LM9830 36-Bit Color Document Scanner
中文描述: SPECIALTY CONSUMER CIRCUIT, PQFP100
封裝: PLASTIC, TQFP-100
文件頁(yè)數(shù): 5/45頁(yè)
文件大?。?/td> 566K
代理商: LM9830VJDX
5
http://www.national.com
Parallel Port 8 Bit Data Read (Figure 3)
t
AF-B3
AUTOFEED falling to BUSY rising
All Except Dataport
Dataport
25
1.5 t
ADC CLK
45
3 t
ADC CLK
ns (max)
ns (max)
t
EPP ACCESS
D0-D7 valid before BUSY rising
(Note 14)
7
-5
ns (min)
t
B-AF2
BUSY rising to AUTOFEED rising
1
10
ns (min)
t
EPP HOLD
AUTOFEED rising to D0-D7 Tri-State
20
10
27
ns (min)
ns (max)
t
AF-B4
AUTOFEED rising to BUSY falling
3 t
MCLK
4 t
MCLK
ns (max)
Nibble Data Read (Figure 4)
t
AF-B3
AUTOFEED falling to BUSY rising
All Except Dataport
Dataport
25
1.5 t
ADC CLK
45
3 t
ADC CLK
ns (max)
ns (max)
t
NIB ACCESS1
D4-D7 valid before BUSY rising
2
-20
ns (min)
t
B-AF2
BUSY rising to AUTOFEED rising
1
10
ns (min)
t
NIB ACCESS2
D0-D3 valid after AUTOFEED rising
5
15
ns (max)
t
AF-B4
AUTOFEED rising edge to BUSY
falling
3 t
MCLK
4 t
MCLK
ns (max)
Microprocessor Mode (Figures 5, 6, and 7)
t
ALE SETUP
D0-D7 (Address) valid before ALE
falling
0
6
ns (min)
t
ALE HOLD
D0-D7 (Address) valid after ALE
falling
2
8
ns (min)
t
ALE
ALE high time
2
8
ns (min)
t
ALE-R/W
ALE falling to CS/RD/WR falling (next
operation)
16
ns (min)
t
WR SETUP
D0-D7 valid before WR rising
0
6
ns (min)
t
WR HOLD
D0-D7 valid after WR rising
2
10
ns (min)
t
WR
WR pulse width
3
10
ns (min)
t
RD ACCESS
RD low to D0-D7 valid
22
31
ns (max)
t
RD TRI-STATE
RD high to D0-D7 Tri-State
20
28
ns (max)
AC Electrical Characteristics
The following specifications apply for AGND=DGND=DGND
I/O
=DGND
SRAM
=0V, V
A
=V
D
=V
DI/O
=V
SRAM
=+5.0V
DC
,
f
CRYSTAL IN
= 50MHz, MCLK DIVIDER = 1.0 (unless otherwise noted), f
MCLK
= f
CRYSTAL IN
/MCLK DIVIDER, f
ADC CLK
= f
MCLK
/8,
C
L
(databus loading) = 20pF/pin.
Boldface limits apply for T
A
=T
J
=T
MIN
to T
MAX
; all other limits T
A
=T
J
=25°C. (Notes 7 & 8)
Symbol
Parameter
Conditions
Typical
(Note 9)
Limits
(Note 10)
Units
(Limits)
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