USB-100 Fujitsu Semiconductor America Inc, USB-100 Datasheet - Page 100

• Manufacturer Part Number: USB-100
• Description: KIT STARTER FOR USB
• Manufacturer: Fujitsu Semiconductor America Inc
• Type: MCUr

Specifications of USB-100

• Contents: Board, Cable
• For Use With/related Products: MB91F662
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 865-1108

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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