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ELM303 데이터시트 PDF




ELM Electronics에서 제조한 전자 부품 ELM303은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


PDF 형식의 ELM303 자료 제공

부품번호 ELM303 기능
기능 Camcorder Time-Lapse Control
제조업체 ELM Electronics
로고 ELM Electronics 로고


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ELM303 데이터시트, 핀배열, 회로
ELM303
Camcorder Time–Lapse Control
Description
The ELM303 is a specialized circuit for creating
time-lapse videos on suitably equipped camcorders.
The camcorder to be controlled must have a Control
L (LANC) port, and also be capable of responding to
power control signals. This is usually only available
with the mini DIN connectors, and not the 2.5mm
stereo plug interfaces.
The ELM303 provides intervals of 10 minutes to
24 hours between recordings, without requiring any
external timing components. Recording durations of
either 1 second or 10 seconds is also selectable.
www.DataSheet4UO.cnoemadditional feature allows manually triggered
recordings to be initiated when all three interval
inputs are at a low level. Recording will begin
immediately and will continue as long as the inputs
remain low. This combination is fully debounced,
simplifying the interface to mechanical switches.
The ELM303 has been ‘hard–coded’ to send the
Control L hex command ‘33’ (word 1) to device ‘18’
(word 0), and cannot be modified. Be sure to verify
that these are appropriate for your camera before
committing to any designs.
Applications
• Time-lapse video recording
• Security monitoring
• Long period time delay circuits
Block Diagram
D0 5
Control L
Driver
Programmable
Delay
Control
I2 2
I1 3
I0 4
VDD
200ms Pulse
Generator
Features
• Delays of 10 minutes to 24 hours with no external
timing components
• Recording durations of 1 or 10 seconds
• Low power CMOS design - typically 1mA at 5V
• Security feature allows on demand recording
• Initial recording after 1 minute to verify system
operation and connections
• Pulsed power output to control camera power
Connection Diagram
PDIP and SOIC
(top view)
VDD 1
I2 2
I1 3
I0 4
8 VSS
7 LANC
6 Power
5 D0
VDD
7 LANC
VSS
VDD
6 Power
VSS
I2 I1 I0 Interval
L L L continuous
L L H 10 min
L H L 30 min
L H H 60 min
HL L
3 hrs
HLH
6 hrs
H H L 12 hrs
H H H 24 hrs
Table 1
ELM303DSA
Elm Electronics – Circuits for the Hobbyist
< http://www.elmelectronics.com/ >
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ELM303 pdf, 반도체, 판매, 대치품
Functional Block Diagram
The operation of the ELM303 can best be
described through the following block diagram. All
of the main functions are shown, while initialization,
timekeeping, etc. are implied. The power on and off
delays are internally set, and are not adjustable.
Note that on powerup, and after responding to
a ‘000’ interval code, the circuit always initiates a
record cycle after one minute. This allows the
operator to verify that the system is operating
properly.
www.DataSheet4U.com
Pulse Power
for 200msec
wait 10 sec
yes
no
send 0x1833 to
the camcorder
Is
I=’000’
?
wait 5 sec
Pulse Power
for 200msec
Go to PowerUp
Loop
wait for timeout
or I=’000’
Save the state
of all pins
no Control L
bus active
?
yes
send 0x1833 to
the camcorder
if D0=0, wait 1s
else wait 10s
yes Was
I=’000’
?
no
send 0x1833 to
the camcorder
wait 5 sec
Pulse Power
for 200msec
Go to Loop
ELM303DSA
Elm Electronics – Circuits for the Hobbyist
< http://www.elmelectronics.com/ >
ELM303
PowerUp
wait 1 minute
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