參數資料
型號: MB90F488BPF
元件分類: 微控制器/微處理器
英文描述: 16-BIT, FLASH, 25 MHz, MICROCONTROLLER, PQFP100
封裝: 20 X 14 MM, 3.35 MM HEIGHT, 0.65 MM PITCH, PLASTIC, QFP-100
文件頁數: 84/124頁
文件大?。?/td> 1547K
代理商: MB90F488BPF
MB90480B/485B Series
62
12. PWC Timer (MB90485B 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.
相關PDF資料
PDF描述
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