參數(shù)資料
型號: LM9830
廠商: National Semiconductor Corporation
英文描述: LM9830 36-Bit Color Document Scanner
中文描述: LM9830 36位彩色文件掃描儀
文件頁數(shù): 4/45頁
文件大小: 566K
代理商: LM9830
4
http://www.national.com
CRYSTAL IN, CRYSTAL OUT Characteristics
XTAL
OUT DC
CRYSTAL OUT Bias Level (Offset)
0.8
V
XTAL
OUT AC
CRYSTAL OUT Amplitude
f
CRYSTAL
= 50MHz
0.8
V
P-P
Power Supply Characteristics
I
A
Analog Supply Current
(V
A
pins)
Operating
Standby
64
0.75
83
0.95
mA (max)
mA (max)
I
D I/O
Digital I/O Supply Current
(V
D I/O
, V
D
, and V
SRAM
pins)
Operating
Standby
40
5
48
6.5
mA (max)
mA (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)
Parallel Port Address Write (Figure 1)
t
SETUP1
D0-D7 (Address) valid to SELECT IN
falling
-60
-10
ns (min)
t
SETUP2
STROBE falling edge to SELECT IN
falling
-15
-10
ns (min)
t
SI-B1
SELECT IN falling to BUSY rising
25
40
ns (max)
t
B-SI
BUSY rising to SELECT IN rising
0
20
ns (min)
t
HOLD1
SELECT IN rising to STROBE rising
-45
-15
ns (min)
t
SI-B2
SELECT IN rising to BUSY falling
33
50
ns (max)
t
HOLD2
D0-D7 (Address) hold time after
BUSY falling
-10
0
ns (min)
Parallel Port Data Write (Figure 2)
t
SETUP1
D0-D7 valid or STROBE falling to
SELECT IN falling
-60
-10
ns (min)
t
SETUP2
STROBE falling to AUTOFEED falling
-25
-10
ns (min)
t
AF-B1
AUTOFEED falling to BUSY rising
34
50
ns (max)
t
B-AF1
BUSY rising to AUTOFEED rising
0
20
ns (min)
t
HOLD1
AUTOFEED rising to STROBE rising
-40
-10
ns (min)
t
AF-B2
AUTOFEED rising to BUSY falling
All Except Dataport
Dataport
16
1.5 t
ADC CLK
35
3 t
ADC CLK
ns (max)
ns (max)
t
HOLD2
D0-D7 valid after BUSY falling
-10
0
ns (min)
DC and Logic 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.
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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