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MB90480 Datasheet(PDF) 62 Page - Fujitsu Component Limited.

Part No. MB90480
Description  16-bit Proprietary Microcontroller
Download  120 Pages
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Maker  FUJITSU [Fujitsu Component Limited.]
Homepage  http://edevice.fujitsu.com/fmd/en/index.html
Logo FUJITSU - Fujitsu Component Limited.

MB90480 Datasheet(HTML) 62 Page - Fujitsu Component Limited.

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MB90480/485 Series
62
12. PWC Timer (MB90485 series only)
The PWC timer is a 16-bit multifunction up-count timer capable of measuring the pulse width of the input signal.
A total of three channels are provided, each consisting of a 16-bit up-count timer, an input pulse divider & divide
ratio control register, a measurement input pin, and a 16-bit control register. These components provide the
following functions.
Timer function :
• Capable of generating an interrupt request at fixed intervals specified.
• The internal clock used as the reference clock can be selected from
among three types.
Pulse width measurement function :
• Measures the time between arbitrary events based on external pulse
inputs.
• The internal clock used as the reference clock can be selected from
among three types.
• Measurement modes
- “H” pulse width (
↑ to ↓) /“L” pulse width (↑ to ↓)
- Rising cycle (
↑ to ↑) /Falling cycle (↓ to ↓)
- Measurement between edges (
↑ or ↓ to ↓ or ↑)
• The 8-bit input divider can be used for division measurement by dividing
the input pulse by 22
× n (n = 1, 2, 3, 4) .
• An interrupt can be generated upon completion of measurement.
• One-time measurement or fast measurement can be selected.


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