參數(shù)資料
型號(hào): ADC0803LCD
廠商: NXP SEMICONDUCTORS
元件分類: ADC
英文描述: CMOS 8-bit A/D converters
中文描述: 1-CH 8-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO20
封裝: 7.50 MM, PLASTIC, SOT-163-1, SO-20
文件頁(yè)數(shù): 10/18頁(yè)
文件大小: 150K
代理商: ADC0803LCD
Philips Semiconductors
Product data
ADC0803/0804
CMOS 8-bit A/D converters
2002 Oct 17
10
3-STATE TEST CIRCUITS AND WAVEFORMS (ADC0801-1)
t
r
90%
10%
t
0H
10%
V
CC
GND
V
OH
GND
RD
DATA
OUTPUT
C
L
V
CC
DATA
OUTPUT
10 k
C
L
CS
RD
t
r
90%
10%
t
1H
90%
V
CC
GND
V
OH
GND
RD
DATA
OUTPUT
V
CC
CS
RD
DATA
OUTPUT
V
CC
20ns
10 pF
t
OH
t
1H
10 pF
SL00019
10 k
Figure 4. 3-State Test Circuits and Waveforms (ADC0801-1)
TIMING DIAGRAMS
(All timing is measured from the 50% voltage points)
START
CONVERSION
CS
WR
t
WI
t
W(WR)L
ACTUAL INTERNAL
STATUS OF THE
CONVERTER
(LAST DATA WAS READ)
(LAST DATA WAS NOT READ)
INTR
INTR
CS
RD
DATA
OUTPUTS
INTR RESET
t
RI
t
ACC
t
1H,
t
0H
THREE–STATE
1 TO 8 X 1/f
CLK
”NOT BUSY”
”BUSY”
INTERNAL T
C
DATA IS VALID IN
OUTPUT LATCHES
INT ASSERTED
1/2 T
CLK
NOTE
NOTE:
Read strobe must occur 8 clock periods (8/f
CLK
) after assertion of interrupt to guarantee reset of INTR.
Output Enable and Reset INTR
SL00020
Figure 5. Timing Diagrams
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