Pin Assignments
181
192
PRESETTABLE SYNCHRONOUS
ARITHMETIC LOGIC UNITS/FUNCTION GENERATORS
4-BIT UP/DOWN COUNTERS
INPUTS
A2 B2
OUTPUTS
V
CC
A1
B1
A3
B3
G
Cn+4
P
A = B
VCC
P0
MR
TCD
TCU
PL
P2
P3
F3
24 23 22 21 20 19 18 17 16 15 14 13
16 15 14 13 12 11 10
9
A1
B0
B1
S3
A2
S2
B2
S1
A3
S0
B3
Cn
G
Cn+4
P
A = B
F3
F2
A0
M
F0
F1
1
B0
2
A0
3
S3
4
S2
5
S1
6
S0
7
Cn
8
M
9
F0
10 11 12
1
P1
2
Q1
3
Q0
4
5
6
Q2
7
Q3
8
GND
F1
F2
GND
CPD CPU
INPUTS
OUTPUTS
See page 336
See page 344
182
193
LOOK-AHEAD CARRY GENERATOR
4-BIT SYNCHRONOUS UP/DOWN COUNTERS
(DUAL CLOCK WITH CLEAR)
INPUTS
OUTPUTS
INPUTS
INPUTS
G2
OUTPUTS
BO-
CLEAR RROW CARRY LOAD
DATA
A
DATA DATA
V
CC
C
D
V
CC
P2
C
n
C
n+x
C
G
C
n+z
n+y
16 15 14 13 12 11 10
9
16 15 14 13 12 11 10
9
A
CLEAR BO- CARRY LOAD
RROW
C
P2
P1
G2
G0
C
C
C
n+y
G
n
n+x
B
D
C
n+z
G1
COUNT COUNT
DOWN UP
QB
QA
QC
QD
P0
G3
P3
P
1
2
QB
3
4
5
6
7
QD
8
GND
1
G1
2
P1
3
G0
4
P0
5
G3
6
P3
7
8
GND
DATA
QA COUNT COUNT QC
P
B
DOWN UP
OUTPUT
INPUT
INPUTS
OUTPUTS
INPUTS
OUTPUTS
See page 338
See page 346
190
194
4-BIT BIDIRECTIONAL UNIVERSAL SHIFT REGISTERS
SYNCHRONOUS 4-BIT UP/DOWN DECADE AND BINARY COUNTERS
191
4-BIT SYNCHRONOUS UP/DOWN BINARY COUNTERS
INPUTS
OUTPUTS
INPUTS
DATA
RIPPLE MAX/
CLOCK MIN
DATA DATA
V
CC
CLOCK
LOAD
A
C
D
V
CC
QA
QB
QC
QD CLOCK S1
S0
16 15 14 13 12 11 10
9
16 15 14 13 12 11 10
9
A
RIPPLE MAX/ LOAD
CLOCK MIN
C
QA
CLEAR
R
QB
QC
QD
S1
CLOCK
D
S0
QB
QA
CTEN DN/UP QC
QD
A
B
C
L
1
2
3
4
5
6
7
8
GND
1
2
3
A
4
5
6
D
7
8
DATA
QB
QA
ENA- DOWN/ QC
QD
CLEAR SHIFT
B
C
SHIFT GND
B
BLE UP
RIGHT
LEFT
INPUT
SERIAL
SERIAL
INPUT
INPUT
PARALLEL INPUTS
OUTPUTS
INPUTS
OUTPUTS
See page 340, 342
See page 348
172
TI [ TEXAS INSTRUMENTS ]
