参数资料
型号: MED-EKG
厂商: Freescale Semiconductor
文件页数: 4/7页
文件大小: 0K
描述: TOWER SYSTEM ELECTROCARDIOGRAM
视频文件: Freescale Tower Overview - Another Geek Moment
Freescale Tower Labs 1 & 2 - Another Geek Moment
设计资源: MED-EKG Schematic
标准包装: 1
系列: ColdFire®
传感器类型: 医用型,心电图(EKG/ECG)
接口: JTAG
电源电压: 3.3V
嵌入式: 是,DSC
已供物品:
已用 IC / 零件: MC56F8257
2 Reference Documents
The documents listed below are available online. Refer to www.freescale.com/tower or
www.freescale.com/medical for the latest revisions of these documents.
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MED-EKG Schematics
Quick Start Guide for TWR-S08MM128
Quick Start Guide for TWR-MCF51MM
TWR-MCF51MM-KIT and TWR-S08MM128-KIT Labs
3 Hardware Features
This section provides more details about the features and functionality of the MED-EKG.
3.1 System Power
The MED-EKG is powered by the default trough connector J1, but can be also powered by the JTAG-
ONCE port. Do not apply both power sources at the same time.
NOTE: Power switch is controlled by the MCF51MM256 or MC9S08MM128 pin PTE7 from the
corresponding Tower System MCU module. To turn on the MED-EKG module in your software, make
sure to set PTE7 pin to output low (active low). To turn off, set PTE7 to output high. This has already
been done in the MED-EKG demonstration software in the TWR-MCF51MM-KIT or TWR-S08MM128-
KIT.
3.2 Debug Interface
The included DSC is factory programmed with firmware for digital filtering (a band-pass filter and a
notch filter), however it can be reprogrammed using an external JTAG-ONCE interface (USB-TAP) for
user specific applications. It can be connected on header J10.
3.3 Medical Connector
Header J1 (2x10 pins) of MED-EKG provides connectivity with either the TWR-MCF51MM or the TWR-
S08MM128 board through the medical connector. It allows the use of internal OPAMPs, TRIAMPs, ADC
and DAC of Flexis MM 32-bit or 8-bit microcontrollers to implement the requirement of signal
conditioning. Pin 3 and 4 can also be used to send DSC filtered data to the target Tower MCU. Table 1
shows the signal present in each pin of medical connector. Please refer to TWR-MCF51MM-KIT or the
TWR-S08MM128-KIT LAB1 MED-EKG DEMO for instructions on assembling with the Tower System.
MED-EKG Signal
Pin
MED-EKG Signal
VDD(3.3V)
ECG_IIC_SDA
MM_AdcEcgSignal
MM_AdcBaseline
OUT1
1
3
5
7
9
2
4
6
8
10
GND
ECG_IIC_SCL
GND
MMDac
OUT2
MED-EKG User Manual
Page 4 of 7
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