Chapter 1 Introduction 9
Caution of Low Battery Charge
The power source for the 8000 Series to work can be alkaline batteries (2*AAA for Model
8000/8020) or the rechargeable battery pack (for Model 8001/8021/8061/8071). The
alkaline batteries or the battery pack charges the backup battery on the main board so that
the data stored in SRAM can be retained properly. Therefore, when the main battery charge
goes low, you must replace the alkaline batteries or the battery pack. For Model
8001/8021/8061/8071, you can charge it in the cradle as soon as possible. Always
remember to save data before it is too late!
Warning: Data loss may occur with SRAM during low battery condition. Always
save data before running out of power or keep a fresh battery or batteries
for replacement.
1.5.2 CPU
A 16-bit CMOS type CPU is utilized, low power consumption.
1.5.3 Memory
The collected data can be sent back to a host computer immediately or stored in memory
(SRAM).
Program Memory
2 megabytes flash memory for core, OS, application programs, font, etc.
Data Memory
2 megabytes SRAM with contents backup by a 7 mAh rechargeable Lithium button cell.
Calendar
A calendar chip is equipped for accurate time/date logging.
Caution of Data Loss
When the main battery or batteries are removed or drained, the backup battery on the main
board is to retain the contents of SRAM and maintain the running of the calendar for at least
30 days, on condition that the backup battery has already been fully charged.
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