9-2
SSDs, DRAM, and battery backup
6000 Series user’s manual
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DRAM
The PC Microcontrollers are shipped with 2 or 4 MB of fast page
DRAM surface mounted on-card.
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Real time clock
The PC Microcontroller has a built-in AT style, real time calendar/
clock. The clock may be read either through DOS or CAMBASIC.
Note: The date and time occasionally resets to default. If your appli-
cation requires date/time stamping you should consider another
Octagon Systems CPU card.
≡
Battery backup for SSD2 and real time
calendar/clock
The PC Microcontroller cards contain a 3.6V Lithium battery on card.
This battery is intended as a backup battery only, to protect data in
SRAM and the real time clock while an external battery is being
changed. Using the on card battery for these functions can reduce the
lifetime to approximately two years. In addition, the margin between
the battery voltage and the switchover threshold can be reduced prema-
turely, causing lost data. This is particularly noticeable in noisy envi-
ronments.
If you are backing up SRAM, or depending on the real time clock, con-
nect an external AT battery to the battery connector J6.
For critical applications such as medical, or data-logging applications
where the CPU is powered off for extended periods, you can connect an
additional battery to pin 7 (battery) and pin 3 (ground) on connector J2
(AUX I/O header). The breakout board (BOB), which connects to the
AUX I/O header, contains a connector for an AT style battery.
Summary of Contents for 6000 Series
Page 7: ...Notice to user PC 500 user s manual ...
Page 9: ...About this manual 6000 Series user s manual ...
Page 37: ...2 20 Quick start 6000 Series user s manual ...
Page 65: ...5 16 Serial ports 6000 Series user s manual ...
Page 87: ...6 22 EZ I O 6000 Series user s manual ...
Page 103: ...8 8 Analog I O 6000 Series user s manual ...
Page 119: ...14 2 PC 104 expansion 6000 Series user s manual ...
Page 133: ...16 4 Watchdog timer reset and remote reset 6000 Series user s manual ...
Page 139: ...17 6 Serial EEPROM 6000 Series user s manual ...
Page 157: ...21 2 Software utilities 6000 Series user s manual ...
Page 161: ...22 4 Troubleshooting 6000 Series user s manual ...
Page 177: ...A 16 6010 technical data 6000 Series user s manual ...
Page 215: ...D 16 6040 technical data 6000 Series user s manual ...
Page 229: ...F 2 Miscellaneous 6000 Series user s manual ...