Freescale S08MM128医疗设备开发方案

发布时间:2011-12-13 16:04    发布者:1640190015
关键词: Freescale , S08MM128 , 医疗设备
Freescale公司的 9S08MM128/64/32是Flexis 8位MCU,具有超低功耗,USB连接和支持图像显示以及无与伦比的测量精度。S08MM128工作电压2.4V时的CPU速率高达48MHz,支持多达33条中断/重置源,128KB双阵列闪存读/编/除功能,12KB RAM,并具有安全电路,防止未许可接入RAM和闪存,并有多种外设接口,主要用在工业,仪表,医疗/保健如血压计,心率监视器,血糖仪,ECG等。本文介绍了S08MM128主要特性,方框图,以及开发工具TWR-S08MM128-KIT主要特性,方框图以及电路图

The 9S08MM128/64/32 provides ultra-low-power operation, USB connectivity, graphic display support and unparalleled measurement accuracy, all in a single 8-bit microcontroller, allowing device designers to create more fully featured products at a lower cost.

The 9S08MM128/64/32 is ideal for medical applications or any other application requiring a significant amount of precision analog such as instrumentation and industrial control. The 9S08MM128/64/32 is part of the Freescale Flexis™ microcontroller series.

S08MM128主要特性:

8-Bit HCS08 Central Processor Unit (CPU)
– Up to 48-MHz CPU above 2.4 V, 40 MHz CPU above 2.1 V, and
20 MHz CPU above 1.8 V across temperature of -40°C to 105°C
– HCS08 instruction set with added BGND instruction
– Support for up to 33 interrupt/reset sources
On-Chip Memory
– 128 K Dual Array Flash read/program/erase over full operating voltage and temperature
– 12 KB Random-access memory (RAM)
– Security circuitry to prevent unauthorized access to RAM and Flash
Power-Saving Modes
– Two ultra-low power stop modes. Peripheral clock enable register can disable clocks to unused modules to reduce currents
– Time of Day (TOD) — Ultra-low power 1/4 sec counter with up to 64s timeout.
– Ultra-low power external oscillator that can be used in stop modes to provide accurate clock source to the TOD. 6 usec typical wake up time from stop3 mode
Clock Source Options
– Oscillator (XOSC1) — Loop-control Pierce oscillator; 32.768 kHz crystal or ceramic resonator dedicated for TOD operation.
– Oscillator (XOSC2) — for high frequency crystal input for MCG reference to be used for system clock and USB operations.
– Multipurpose Clock Generator (MCG) — PLL and FLL; precision trimming of internal reference allows 0.2% resolution and 2% deviation over temperature and voltage; supports CPU frequencies from 4 kHz to 48 MHz.
System Protection
– Watchdog computer operating properly (COP) reset Watchdog computer operating properly (COP) reset with option to run from dedicated 1-kHz internal clock source or bus clock
– Low-voltage detection with reset or interrupt; selectable trip points; separate low-voltage warning with optional interrupt; selectable trip points
– Illegal opcode and illegal address detection with reset
– Flash block protection for each array to prevent accidental write/erasure
– Hardware CRC to support fast cyclic redundancy checks
Development Support
– Single-wire background debug interface
– Real-time debug with 6 hardware breakpoints (4 PC, 1 address and 1 data) Breakpoint capability to allow single breakpoint setting during in-circuit debugging
– On-chip in-circuit emulator (ICE) debug module containing 3 comparators and 9 trigger modes
Peripherals
– CMT— Carrier Modulator timer for remote control communications. Carrier generator, modulator and driver for dedicated infrared out. Can be used as an output compare timer.
– IIC— Up to 100 kbps with maximum bus loading; Multi-master operation; Programmable slave address; Interrupt driven byte-by-byte data transfer; supports broadcast mode and 11-bit addressing
– PRACMP — Analog comparator with selectable interrupt; compare option to programmable internal reference voltage; operation in stop3
– SCI — Two serial communications interfaces with optional 13-bit break; option to connect Rx input to PRACMP output on SCI1 and SCI2; High current drive on Tx on SCI1 and SCI2; wake-up from stop3 on Rx edge
– SPI1— Serial peripheral interface (SPI) with 64-bit FIFO buffer; 16-bit or 8-bit data transfers; full-duplex or single-wire bidirectional; double-buffered transmit and receive; master or slave mode; MSB-first or LSB-first shifting
– SPI2— Serial peripheral interface with full-duplex or single-wire bidirectional; Double-buffered transmit and receive; Master or Slave mode; MSB-first or LSB-first shifting
– TPM — Two 4-channel Timer/PWM Module; Selectable input capture, output compare, or buffered edge- or center-aligned PWM on each channel; external clock input/pulse accumulator
– USB — Supports USB in full-speed device configuration. On-chip transceiver and 3.3V regulator help save system cost, fully compliant with USB Specification 2.0. Allows control, bulk, interrupt and isochronous transfers. Not available on MC9S08MM32A devices.
ADC16 — 16-bit Successive approximation ADC with up to 4 dedicated differential channels and 8 single-ended channels; range compare function; 1.7 mV/C temperature sensor; internal bandgap reference channel; operation in stop3; fully functional from 3.6V to 1.8V, Configurable hardware trigger for 8 Channel select and result registers
– PDB — Programmable delay block with 16-bit counter and modulus and prescale to set reference clock to bus divided by 1 to bus divided by 2048; 8 trigger outputs for ADC16 module provides periodic coordination of ADC sampling sequence with sequence completion interrupt; Back-to-Back mode and Timed mode
DAC— 12-bit resolution; 16-word data buffers with configurable watermark.
– OPAMP — Two flexible operational amplifiers configurable for general operations; Low offset and temperature drift.
– TRIAMP — Two trans-impedance amplifiers dedicated for converting current inputs into voltages.
Input/Output
– Up to 47 GPIOs and 2 output-only pin and 1 input-only pin.
– Voltage Reference output (VREFO).
– Dedicated infrared output pin (IRO) with high current sink capability.
– Up to 16 KBI pins with selectable polarity.
Package Options
– 81-MBGA 10x10 mm
– 80-LQFP 12x12 mm
64-LQFP 10x10 mm

S08MM128目标应用:

Industrial

Instrumentation

Medical/Healthcare

Blood Pressure Monitors   

Heart Rate Monitors   

Pulse Oximetry   

Ultrasound   

Telehealth System   

Hospital Admission Machine   

Blood Glucose Monitors (Glucometers)   

Electrocardiograph (ECG)   

Anesthesia Unit Monitor   

Vital Signs Monitors   

Defibrillators
20111213105356114.gif
图1。MC9S08MM128系列方框图

TWR-S08MM128-KIT医疗设备开发工具

The TWR-S08MM128-KIT is a medical-oriented development tool for the 9S08MM128 microcontroller.

This kit is part of the Freescale Tower System, a modular, reconfigurable development platform that allows designers to get to market faster with packaged evaluation boards, tools and runtime software.

The kit includes the MED-EKG which is an electrocardiograph sensor for medical applications development. The 9S08MM microcontroller module is designed to be a standalone debug tool and can also be purchased separately from the kit, part number TWR-S08MM128.

TWR-S08MM128-KIT医疗设备开发工具主要特性:

Freescale Tower System compliant

Integrated open-source BDM debugging tool

Small form factor (59mm x 90mm)

Supports external communications interfaces

Includes power regulation circuitry with standardized bus

Two 80-pin connectors on the outside to support debugging or expansion to LCD module RS232, RS485, CAN , USB

Open connector for MED-EKG development board

Low power

TWR-S08MM128-KIT医疗设备开发工具包括:

TWR-S08MM128 - 8-bit module that features the 9S08MM128

TWR-SER - Serial module that features Ethernet, USB, RS232/485 and CAN

TWR-ELEV - Two elevator boards that provide structural integrity, communications interfaces, power regulation circuitry with standardized bus

Necessary cables

MED-EKG - Electrocardiograph sensor to develop medical applications with Flexis MM Family

An interactive DVD with lab tutorials, software, training and collateral

A printed guide on how to quickly get started using the development kit
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图2。TWR-S08MM128-KIT外形图
20111213105357197.gif
图3。TWR-S08MM128-KIT方框图
20111213105359116.gif
图4。TWR-S08MM128-KIT电路图(1)
2011121310535926.gif
图5。TWR-S08MM128-KIT电路图(2)
20111213105400335.gif
图6。TWR-S08MM128-KIT电路图(3)
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图7。TWR-S08MM128-KIT电路图(4)
详情请见:
MC9S08MM128[1].pdf (548.34 KB)
SCH-26136[1].pdf (156.77 KB)
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