Medical Applications User Guide (pdf) - Freescale Semiconductor

Diagnostic and Therapy Devices
Key Features
Kinetis K50 MCU features and peripherals in
the integrated measurement engine:
• Ultra-low-power operation
• 2x OPAMP
• 2x TRIAMP
• 2x 12-bit DAC
• 2x 16-bit SAR ADC, up to 31 channels with
programmable gain amplifiers (PGA)
• Programmable Delay Block (PDB)
• I2C • USB connectivity
• ARM Cortex-M4 core with DSP instructions
MCF51MM: Flexis 32-bit
ColdFire V1 MCUs
The MCF51MM256/128 provides ultralow-power
operation, USB connectivity,
graphic display support and unparalleled
measurement accuracy, all in a single 32-bit
MCU, allowing designers to create more
fully featured products at lower cost. The
MCF51MM256/128 is ideal for medical
applications or other applications requiring a
significant amount of precision analog such as
instrumentation and industrial control.
The MCF51MM256/128 is part of the
Freescale Flexis MCU series.
Figure 12-9: MCF51MM256 Block Diagram
Figure 11-11: MCF51MM256 Block Diagram
2x OPAMP
2x TRIAMP
16-bit SAR ADC I2 12-bit DAC LVI
C
PDB
2 x 4-ch. TPM with PWM 2 x SPI
MCG
Features
• ColdFire V1 core delivering a 50 MHz core
speed and 25 MHz bus speed
• Up to 256 KB flash and 32 KB SRAM
• Low-power stop 2 current: 500 nA
(32 KB of active SRAM)
• 2 x general purpose opamps
• 2 x transimpedance amplifiers
• 16-bit SAR high resolution analog-to-digital
converter (ADC)
VREF TOD
PRACMP CMT
2 x KBI 2 x SCI
32-bit V1 ColdFire 50 MHz Core with MAC
Up to 68 GPIO/
16 RGPIO
MiniBus External
USB
Device/Host/
OTG
Bootloader
256 KB 32 KB SRAM
USB ROM
• Analog Comparator with 5-bit digital-toanalog
converter (DAC)
• Internal voltage reference
• USB – device/host/on-the-go controller
• 2 x serial peripheral interface (SPI),
2 x serial communication interface (SCI)
and 1 x I2C • Mini FlexBus (external bus interface EBI)
• Included in Freescale’s Product Longevity
Program
70 Medical Applications User Guide