SK-FR80-120PMC-USB Fujitsu, SK-FR80-120PMC-USB Datasheet - Page 97

• Manufacturer Part Number: SK-FR80-120PMC-USB
• Description: BOARD, EVAL, FOR MB91660 SERIES
• Manufacturer: Fujitsu
• Type: Evaluation Boardr

Specifications of SK-FR80-120PMC-USB

• Kit Features: External FRAM Memory MB85RS256, USB A & USB A Connectors, USB To Serial Converter
• Mcu Supported Families: MB91660
• Silicon Manufacturer: Fujitsu
• Core Architecture: FR80
• Kit Contents: Board, USB A To Mini-B Cable
• Features: USB Connector, 7-segment LED, Humidity Sensor
• Rohs Compliant: No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Voltage dividing characteristic V is calculated as V = Vin x Rs / (Rs + RH) where Vi is the input
voltage, RH is the impedance characteristic of the humidity sensor device, and Rs is the voltage
dividing resistance.
In the above formula, input voltage Vin = 3.3V, and dividing resistance Rs = 47 kΩ.
(1)
(2)
7.2.3
below.
The voltage dividing characteristics of the humidity sensor on the starter kit are shown
Based on a setting in the MB91F662, PPG0 will output a pulse waveform at 1 kHz, 50%
duty. PPG1 will output the phase-inverted waveform of PPG0.
This will produce an alternating current of ±3.3 volts at the equivalent of 1 kHz between
the output pins of PPG0 and PPG1.
The leading edge of PPG2 will trigger the A/D conversion.
The lead edge of PPG2 occurs when PPG0 is in its high phase, and allows reading of
the A/D input waveform when it is stable and near peak. This timing is about 1/2 to 2/3
the way along the pulse width of PPG0.
Humidity sensor characteristics
Figure 9.2.3-1 Voltage dividing characteristics of the humidity sensor 1
Voltage dividing characteristics data
Relative humidity (%RH)
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