Medical Applications User Guide (pdf) - Freescale Semiconductor
Medical Applications User Guide (pdf) - Freescale Semiconductor
Medical Applications User Guide (pdf) - Freescale Semiconductor
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Diagnostic and Therapy Devices<br />
• 2 x serial peripheral interface (SPI),<br />
2 x serial communication interface (SCI)<br />
and 1 x I2C • Mini FlexBus (external bus interface EBI)<br />
• Included in <strong>Freescale</strong> Product Longevity<br />
Program.<br />
S08MM: Flexis 8-bit MCUs<br />
The 9S08MM128/64/32 provides ultralow-power<br />
operation, USB connectivity,<br />
graphic display support and unparalleled<br />
measurement accuracy, all in a single 8-bit<br />
MCU, allowing device designers to create<br />
more fully featured products at a lower cost.<br />
It is ideal for applications requiring a<br />
significant amount of precision analog.<br />
The 9S08MM128/64/32 is part of <strong>Freescale</strong>’s<br />
Flexis MCU series.<br />
Features:<br />
• S08 core delivering a 48 MHz core speed<br />
and 24 MHz bus speed<br />
• Up to 128 KB flash and 12 KB SRAM<br />
• Low-power stop 2 current: 450nA<br />
(12 KB of active SRAM)<br />
• 2 x OPAMP- General purpose opamps<br />
• 2 x TRIAMP- Transimpedance amplifiers<br />
• 16-bit SAR analog-to-digital converter<br />
(ADC) – high resolution ADC<br />
• Analog comparator<br />
• Internal voltage reference<br />
• USB device controller<br />
• 2 x serial peripheral interface (SPI),<br />
2 x serial communications interface (SCI)<br />
and 1 x I2C 16.6<br />
Fetal Heart Rate Monitor<br />
A fetal heart rate monitor is a target<br />
application of digital stethoscopes. It provides<br />
an audible simulation of the heart beats of a<br />
fetus inside the mother’s womb and displays<br />
the number of beats per minute. Fetal heart<br />
rate monitors are increasingly being used in<br />
the home, allowing parents to listen to their<br />
baby’s heart beat.<br />
Figure 16-9 shows the basic block diagram of<br />
a fetal heart rate monitor.<br />
Figure 16-8: MC9S08MM128 Block Diagram<br />
Figure 15-8: MC9S08MM128 Block Diagram<br />
2x OPAMP<br />
2x TRIAMP<br />
PDB<br />
MCG<br />
Figure 16-9: Fetal Heart Rate Monitor General Block Diagram<br />
Fetal Heart Rate Monitor General<br />
Signal<br />
Conditioning<br />
Electrical<br />
Protection<br />
Ultrasonic Probe<br />
Power<br />
Management<br />
Amplifier<br />
<strong>Freescale</strong> Technology Optional<br />
VREF TOD<br />
16-bit SAR ADC I2 12-bit DAC LVI<br />
C<br />
PRACMP CMT<br />
2 x 4-ch. TPM with PWM 2 x SCI<br />
2 x KBI 2 x SPI<br />
8-bit 9S08 48 MHz Core<br />
Pressure Sensor Wireless Comm<br />
88 <strong>Medical</strong> <strong>Applications</strong> <strong>User</strong> <strong>Guide</strong><br />
ADC<br />
Keypad<br />
MCU<br />
PWM<br />
Up to 68 GPIO<br />
USB<br />
Device<br />
Bootloader<br />
128 KB Flash 12 KB SRAM<br />
USB ROM<br />
Segment LCD
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