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ADC0803-1LCD View Datasheet(PDF) - Philips Electronics

Part NameDescriptionManufacturer
ADC0803-1LCD CMOS 8-bit A/D converters Philips
Philips Electronics Philips
ADC0803-1LCD Datasheet PDF : 18 Pages
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Philips Semiconductors
CMOS 8-bit A/D converters
Product data
ADC0803/0804
3-STATE TEST CIRCUITS AND WAVEFORMS (ADC0801-1)
VCC
RD
CS
CL
10 pF
DATA
OUTPUT
VCC
RD
GND
10 k
VOH
DATA
OUTPUT GND
20ns
tr
90%
50%
10%
t1H
90%
VCC
VCC
RD
CS
10 k
DATA
OUTPUT
CL
10 pF
t1H
tOH
Figure 4. 3-State Test Circuits and Waveforms (ADC0801-1)
VCC
RD
GND
VOH
DATA
OUTPUT GND
tr
90%
50%
10%
t0H
10%
SL00019
TIMING DIAGRAMS (All timing is measured from the 50% voltage points)
START
CONVERSION
CS
WR
tWI
tW(WR)L
ACTUAL INTERNAL
STATUS OF THE
CONVERTER (LAST DATA WAS READ)
INTR
(LAST DATA WAS NOT READ)
”NOT BUSY”
1 TO 8 X 1/fCLK
”BUSY”
INTERNAL TC
INTR
INTR RESET
CS
tRI
RD
DATA
OUTPUTS
NOTE
tACC
THREE–STATE
t1H, t0H
Output Enable and Reset INTR
NOTE:
Read strobe must occur 8 clock periods (8/fCLK) after assertion of interrupt to guarantee reset of INTR.
Figure 5. Timing Diagrams
DATA IS VALID IN
OUTPUT LATCHES
INT ASSERTED
1/2 TCLK
SL00020
2002 Oct 17
10
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