PS09
®
5th November 2014 Document-No: DB_PSØ 9_Vol2_en V1.0
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PSØ 9 DSP
The PSØ 9 is a system-on-chip for ultra low-power and high resolution applications. It was designed especially for weight scales but fits also to any kind of force or torque measurements based on metal strain gages. It takes full advantage of the digital measuring principle of PICOSTRAIN. Thus, it bines the performance of a 28-Bit signal converter with a 24-Bit microprocessor. This volume 2 datasheet describes the PSØ 9 CPU and the instruction set for programming the CPU. In stand-alone operation it is mandatory to have a program running in the CPU, but also in front-end mode, when operated as pure resistance-to-digital converter, the CPU might be used to implement additional data postprocessing on chip.
Strain Gage Control
Load cell Load cell Load cell Load cell
Temperature Measuremen t
Ceramic oscilaltor
10 k Hz CLK
4 Mhz Ref Osc
Watchdog Timer
Reset
Measurement Unit
CPU 24...
