DRM101 Datasheet, PDF (24/56 Pages) Freescale Semiconductor, Inc – Blood Pressure Monitor Using the Flexis QE128 Family

Hardware Description
Flexis QE128 features:
• Up to 50 MHz CPU frequency from 3.6 V to 2.1 V, and 20 MHz CPU frequency at 2.1 V to 1.8 V,
across a temperature range of –40 °C to 85 °C
• 128 KB flash and 8 KB RAM
• Peripheral clock enable register, to disable clocks to unused modules
• Enhanced 24-channel, 12-bit analog-to-digital converter (ADC)
3.3.1 MC9S08QE128 Microcontroller
The MC9S08QE128 MCU is a highly integrated member of Freescale’s 8-bit family of microcontrollers
that is based on the high-performance, low-power consumption HCS08 core. The MC9S08QE128 MCU
includes a background debugging system and on-chip, in-circuit emulation (ICE) with real-time bus
capture, providing a single-wire debugging and emulation interface. It also features a programmable 16-bit
timer/pulse-width-modulation module that is one of the most flexible and cost-effective of its kind. The
compact, tightly integrated MC9S08QE128 MCU delivers a versatile combination of Freescale
peripherals along with the advanced features of the HCS08 core, including extended battery life with
maximum performance down to 1.8 V, industry-leading flash, and innovative development support.
MC9S08QE128 features:
• Support for up to 32 interrupt/reset sources
• New MMU allows access of up to 4 MB through paging
• New linear address pointer to access all memory on the MCU
• SET/CLR/TOGGLE registers on 16 pins (PTC and PTE)
3.3.2 MCF51QE128 Microcontroller
The MCF51QE128 microcontroller extends the low end of the ColdFire family with up to 128 KB flash
memory and a 24-channel, 12-bit analog-to-digital converter (ADC). The 32-bit QE128 includes up to
3.3 V supply voltage, a 50.33 MHz CPU core, and three timers for improved motor control.
MCF51QE128 features:
• Implements ColdFire V1 instruction set revision C
• Support for up to 30 peripheral interrupt requests and seven software interrupts
• Single-wire background debug interface
• 16 bits of Rapid GPIO connected to the CPU’s high-speed local bus with set, clear, and toggle
functionality
3.4 MPR083 Proximity Sensor
The MPR083 is an IIC-driven capacitive touch sensor controller, optimized to manage an 8-position
rotary-shaped capacitive array. This device can accommodate a wide range of implementations through
three output mechanisms and many configurable options.
Blood Pressure Monitor Design Reference Manual, Rev. 0
3-2
Freescale Semiconductor