Installing Devices 6-10
6.8.3
Battery Backup Circuit
The board comes with a 350mA/h lithium battery. If the TEK-AT4L
PLUS
is strapped to
be powered by the battery back-up, the RAMs will retain their information after a power
down.
Please refer to Section 9-
Jumper Settings
to locate and set Battery Backup Circuit (W10).
WARNING:
Removing jumper W10 will cause the set-up and real-time clock
information to be lost.
The TEK-AT4L
PLUS
comes with a 350mA/h TL5186 TADIRAN battery with a shelf life
of approximately 10 years (under "no-load" conditions).
TEK-AT4L
PLUS
draws approximately 24mA typical. This means the battery will last 1.6
years if no power is applied to the board. Remember, when the 5V is supplied, the battery
is electronically disconnected. Virtually as if it were on the shelf.
The actual life of the battery depends on the amount of time DC power is not applied and
on environmental (temperature) conditions. The TADIRAN TL5186 has an operating
range of -55
0
to 75
0
C and discharge characteristics vary with temperature.
The TADIRAN TL5186 is U.L. recognized. Its U.L. component recognition is MH12193.
WARNING:
The actual voltage supplied by the battery is 3.6 volts. This can be
verified at pins 16-32 on the SRAM device using a standard voltmeter.
Summary of Contents for TEK-AT4L Plus
Page 7: ...PRODUCT DESCRIPTION 1 PRODUCT OVERVIEW 2 ONBOARD SUBSYSTEMS...
Page 9: ...Product Overview 1 2 TEK AT4LPLUS Block Diagram...
Page 26: ...Installing Devices 6 3 CONNECTOR LOCATION...
Page 35: ...Setting Jumpers 8 3 JUMPER LOCATIONS...
Page 36: ...Setting Jumpers 8 5 TABLE 8 1 Jumper Settings W1 W11...
Page 37: ...Setting Jumpers 8 6 TABLE 8 2 Jumper Settings W12 W19 W26...
Page 38: ...Setting Jumpers 8 7 TABLE 8 3 Jumper Settings W20 W25 SW1 SW2...
Page 41: ...APPENDICES A PRODUCT SPECIFICATIONS B BOARD DIAGRAMS C CONNECTOR PINOUTS...
Page 43: ...Board Diagrams B 1 B 1 TEK AT4LPLUS Assembly Diagram Top View...
Page 44: ...Board Diagrams B 3 B 2 TEK AT4LPLUS Mounting Holes...
Page 45: ...Board Diagrams B 5 B 3 TEK AT4LPLUS Mechanical Specifications...