DRM101 Datasheet, PDF (7/56 Pages) Freescale Semiconductor, Inc – Blood Pressure Monitor Using the Flexis QE128 Family

Chapter 2
Introduction
2.1 Intended Functionality
The blood pressure monitor (BPM) reference design shows how to implement a system that can measure
arterial blood pressure values. The system demonstrates control, data retention, analog acquisition, and
connectivity functions, as well as the ability to interface with a user. These are achieved by using several
Freescale devices.
This reference design serves only as a proof of concept for this application and is not authorized for use in
safety-critical applications such as a U.S. Food and Drug Administration (FDA) class 3 application.
Manufacturers and designers who incorporate Freescale (FSL) technology must have all necessary
expertise in the safety and regulatory ramifications involved in the application of this design, and they are
solely responsible for all legal, regulatory, and safety-related requirements concerning their products and
the use of Freescale devices in safety-critical applications.
2.2 Solution Benefits
The BPM reference design elements can be referenced for later development as:
• USB communication using the MC9S08JM60 as a bridge
• 2.4 GHz communication using the MC13202 ZigBee transceiver
• MRAM communications
• Use of MRAM to store user data
• MRAM driver to access MRAM memory
• User display using an OLED display
• User interface using the MPR083 proximity sensor
• Audio feedback using two timer pulse-width modulator (TPM) modules
The main benefit from this solution is that developers are able to take any piece of hardware and/or
software and reuse it for their own applications, thus enhancing the design cycle and providing faster
development time.
Blood Pressure Monitor Design Reference Manual, Rev. 0
Freescale Semiconductor
2-1