Pin Configuration - Elenco Electronics M-2665K Assembly And Instruction Manual

TYPICAL SEGMENT OUTPUT
V+
0.5mA
Segment
Output
2mA
Internal Digital Ground
* Three inverters.
One inverter shown for clarity.
OSC 1
C
REF
REF HI
C +
REF
7 5
V+
A-Z & A-Z &
Z1
10mA
10
INT
IN HI
DE (-) DE (+)
A-Z
DE (+) DE (-)
9
COMMON
A-Z & DE(+)
INT
& Z1
11
IN LO
Figure 6 7106R Functions
+ REF CAP
– REF CAP
COMMON
INPUT HI
INPUT LO
AUTO-ZERO
INTEGRATOR
(–) SUPPLY
G (TENS)
BACKPLANE
(7106R)
7106R Pin Connections
a
f
a
g
b e
d
LCD PHASE DRIVER
7 Segment
Decode
Thousand Hundreds
To Switch Drivers
From Comparator Output
CLOCK
-4
*
Internal Digital Ground
1 2
3
OSC 2 OSC 3
R
INT
REF LO C
BUFFER V+
REF
40
8
13 12
6
+
Z1
6.2V
2.8V
Z1
+
15
V

Pin Configuration

OSC 1 1 40 (+) SUPPLY
OSC 2 2 39 D (UNITS)
OSC 3 3 38 C (UNITS)
TEST 4 37 B (UNITS)
REF HI 5 36 A (UNITS)
7106R
REF LO 6 35 F (UNITS)
7 34 G (UNITS)
8 33 E (UNITS)
9 32 D (TENS)
10 31 C (TENS)
11 30 B (TENS)
12 29 A (TENS)
BUFFER 13 28 F (TENS)
14 27 E (TENS)
15 26 D (100's)
16 25 B (100's)
C (100's) 17 24 F (100's)
A (100's) 18 23 E (100's)
G (100's) 19 22 AB (1000)
20 21 POLARITY
(MINUS)
-5-
a a
f f
b b b
g g
c e c e c
d d
20
7 Segment 7 Segment
200
Decode Decode
LATCH
Tens Units
LOGIC CONTROL
500W
1V
DIGITAL SECTION
C
C
AZ
INT
AUTO
INT
ZERO
14
INTEGRATOR
ZERO
CROSSING
+
+
DETECTOR
TO
DIGITAL
A-Z COMPARATOR
SECTION
POLARITY
FLIP/FLOP
ANALOG SECTION of 7106R
BACKPLANE
V+
6.2V
4
TEST
15
V