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dc2254af
DEMO MANUAL DC2254A
Description
LTC2956
Wake-Up Timer
with Pushbutton Control
Demonstration circuits 2254A-A and 2254A-B feature the
LTC2956-1 and LTC2956-2, respectively. The
is a micropower, wide input voltage range, configurable
wake-up timer with pushbutton control. It periodically
wakes up and turns on a connected system to perform
tasks like monitoring temperature or capturing images.
After completing the task, the LTC2956 turns the system
off to conserve power. The wake-up timer period can be
adjusted from 250ms to 39 days.
L
, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
BoarD photo
The DC2254A allows easy access to all the pins necessary
to configure the device. Onboard jumpers, and an 8-pin
DIP switch provide a range of value options, to set the
wake-up timer, wake-up timer period and long power down
time. Turrets are also present, allowing direct access to all
the pins present on the LTC2956 to allow easy interfacing
with a system with arbitrary requirements.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2254A
Figure 1. Test Equipment Setup
PSU
I/O TO
SCOPE OR
µP
+
–
