Intel 8253 - Page 696

Philips Semiconductors Linear Products Product specification
ADC0803/4-1CMOS 8-bit A/D converters
August 31, 1994
556
BLOCK DIAGRAM
M
V
IN
(+) V
IN
(–)
76
+
–
LADDER AND
DECODER
+
–
AUTO ZERO
COMPARATOR
V
REF
/2
A GND
9
8
V
CC
20
10
D GND
WR
CS
RD
3
1
2
SAR
8–BIT
SHIFT REGISTER
INTR
FF
CLOCK
OUTPUT
LATCHES
LE OE
D7 (MSB) (11)
D6 (12)
D5 (13)
D4 (14)
D3 (15)
D2 (16)
D1 (17)
D0 (LSB) (18)
INTR
CLK IN
CLK R
S
R Q
5 4 19