CP82C54-10 Intersil, CP82C54-10 Datasheet - Page 13

IC TIMER PROG CMOS 10MHZ 24-DIP

CP82C54-10

Manufacturer Part Number
CP82C54-10
Description
IC TIMER PROG CMOS 10MHZ 24-DIP
Manufacturer
Intersil
Type
Programmable Timerr
Datasheet

Specifications of CP82C54-10

Frequency
10MHz
Voltage - Supply
4.5 V ~ 5.5 V
Current - Supply
10mA
Operating Temperature
0°C ~ 70°C
Package / Case
24-DIP (0.600", 15.24mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Count
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
CP82C54-10
Manufacturer:
INTERSIL
Quantity:
600
Part Number:
CP82C54-10
Manufacturer:
INTERSIL
Quantity:
600
Part Number:
CP82C54-10
Manufacturer:
HARRIS
Quantity:
50
Part Number:
CP82C54-10
Manufacturer:
INTEL
Quantity:
5 510
Part Number:
CP82C54-10
Quantity:
200
Part Number:
CP82C54-10
Manufacturer:
HARRIS
Quantity:
20 000
Company:
Part Number:
CP82C54-10
Quantity:
7
Part Number:
CP82C54-10Z
Manufacturer:
INTERSIL
Quantity:
2 000
Part Number:
CP82C54-10Z
Manufacturer:
INTERS
Quantity:
1 176
Part Number:
CP82C54-10Z
Manufacturer:
INTERSIL
Quantity:
800
Part Number:
CP82C54-10Z
Manufacturer:
INTERSIL
Quantity:
700
Part Number:
CP82C54-10Z
Manufacturer:
INTERSIL
Quantity:
500
MODE 2: RATE GENERATOR
This Mode functions like a divide-by-N counter. It is typically
used to generate a Real Time Clock Interrupt. OUT will
initially be high. When the initial count has decremented to 1,
OUT goes low for one CLK pulse. OUT then goes high
again, the Counter reloads the initial count and the process
is repeated. Mode 2 is periodic; the same sequence is
repeated indefinitely. For an initial count of N, the sequence
repeats every N CLK cycles.
GATE = 1 enables counting; GATE = 0 disables counting. If
GATE goes low during an output pulse, OUT is set high
immediately. A trigger reloads the Counter with the initial
count on the next CLK pulse; OUT goes low N CLK pulses
after the trigger. Thus the GATE input can be used to
synchronize the Counter.
After writing a Control Word and initial count, the Counter will
be loaded on the next CLK pulse. OUT goes low N CLK
pulses after the initial count is written. This allows the
Counter to be synchronized by software also.
Writing a new count while counting does not affect the current
counting sequence. If a trigger is received after writing a new
count but before the end of the current period, the Counter will
be loaded with the new count on the next CLK pulse and
counting will continue from the end of the current counting
cycle.
GATE
GATE
GATE
CLK
OUT
CLK
OUT
CLK
OUT
WR
WR
WR
CW = 14
CW = 14
CW = 14
N
N
N
N
N
N
LSB = 3
LSB = 4
LSB = 3
N
N
N
FIGURE 11. MODE 2
N
N
N
0
3
0
3
0
4
13
LSB = 5
0
2
0
2
0
3
0
1
0
2
0
2
0
3
0
1
0
3
0
2
0
2
0
5
0
1
0
1
0
4
0
3
0
3
0
3
82C54
MODE 3: SQUARE WAVE MODE
Mode 3 is typically used for Baud rate generation. Mode 3 is
similar to Mode 2 except for the duty cycle of OUT. OUT will
initially be high. When half the initial count has expired, OUT
goes low for the remainder of the count. Mode 3 is periodic;
the sequence above is repeated indefinitely. An initial count
of N results in a square wave with a period of N CLK cycles.
GATE = 1 enables counting; GATE = 0 disables counting. If
GATE goes low while OUT is low, OUT is set high
immediately; no CLK pulse is required. A trigger reloads the
Counter with the initial count on the next CLK pulse. Thus
the GATE input can be used to synchronize the Counter.
After writing a Control Word and initial count, the Counter will
be loaded on the next CLK pulse. This allows the Counter to
be synchronized by software also.
Writing a new count while counting does not affect the
current counting sequence. If a trigger is received after
writing a new count but before the end of the current half-
cycle of the square wave, the Counter will be loaded with the
new count on the next CLK pulse and counting will continue
from the new count. Otherwise, the new count will be loaded
at the end of the current half-cycle.
GATE
GATE
GATE
CLK
OUT
CLK
OUT
CLK
OUT
WR
WR
WR
CW = 16 LSB = 4
CW = 16 LSB = 5
CW = 16 LSB = 4
N
N
N
N
N
N
N
N
N
N
N
N
FIGURE 12. MODE 3
0
4
0
5
0
4
0
2
0
4
0
2
0
4
0
2
0
4
0
2
0
5
0
2
0
2
0
2
0
4
0
2
0
5
0
2
0
4
0
4
0
4
0
2
0
2
0
2
0
4
0
5
0
4
0
2
0
2
0
2

Related parts for CP82C54-10