User manual

Chapter 2 - Specifications
GP-2400/2500/2600 Series User Manual 2-5
2.2.3 Clock
The GP’s internal clock has a slight error. At normal operating temperatures and
conditions, with the GP operating from its lithium battery, the degree of error is 65
seconds per month. Variations in operating conditions and battery life can cause this
error to vary from -380 to +90 seconds per month. For systems where this degree of
error will be a problem, the user should be sure to monitor this error and make ad-
justments when required.
2.2.2 Memory
*1 Pro-Designer and GP-PRO/PBIII (C-Package02) each use application memory
differently.
*2
A Lithium battery’s lifetime is:
10 years when the battery’s ambient temperature is under 40
o
C
4.1 years when the battery’s ambient temperature is under 50
o
C
1.5 years when the battery’s ambient temperature is under 60
o
C
When used for backup:
Approximately 60 days, with a fully charged battery
Approximately 6 days, with a half-charged battery
Application
8MB FLASH EPROM
*1
Data Backup
512KB SRAM (uses lithium battery)
*2
GP-2400 Series GP-2500 Series GP-2600 Series
Clock Accuracy
+ 65 seconds/ month (at room temperature)