Appendix C Technical data for the 7951
Page C.8
Hardware facilities
Microprocessor Processor Motorola 68332
Clock speed 24 MHz
Computation resolution 64-bit (IEEE 754), fully-floating point maths
package. Embedded Real-time operating system.
Computation accuracy < 1 part in 1011
Memory Program storage 2 Mbyte FLASH, field upgrad eable using
serial link and Winboot software tool
Data storage 2 Mbyte of RAM, battery-backed by internal
Lithium cell (as used by real-time clock also).
Battery life is typically 2 years if 7951 is
un-powered, or 5 years if powered.
16kB FRAM non-volatile store for calibration data
Options None
Keyboard interface Number of keys 30
Key scan time 2ms
Debounce 14ms
Options None
Display Number of lines 4
Characters per line 20 alpha numeric
Backlight LED, continuously powered
Contrast software selectable, temperature compensated
Options None
Real-time clock Accuracy 1 part in 90000
Power Replaceable Lithium button cell (CR2430)
Battery life is typically 2 years if 7951 is
un-powered, or 5 years if powered.
Options None
Battery monitor T ype ADC, indicates battery condition
Options None