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參數資料
| 型號： | MB90F457S |
| 廠商： | Fujitsu Limited |
| 英文描述： | 16-bit Proprietary Microcontroller |
| 中文描述： | 16位微控制器專有 |
| 文件頁數： | 40/78頁 |
| 文件大小： | 680K |
| 代理商： | MB90F457S |
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MB90455 Series
40
7.
8/16-bit PPG Timer Outline
The 8/16-bit PPG timer is a 2-channel reload timer module (PPG0 and PPG1) that allows outputting pulses of
arbitrary cycle and duty cycle. Combination of the two channels allows selection among the following operations:
8-bit PPG output 2-channel independent operation mode
16-bit PPG output operation mode
8-bit and 8-bit PPG output operation mode
MB90455 series device has two 8/16-bit built-in PPG timers. This section describes functions of PPG0/1.
PPG2/3 have the same functions as those of PPG0/1.
Functions of 8/-16-bit PPG timer
The 8/-16-bit PPG timer is composed of four 8-bit reload register (PRLH0/PRLL0, PRLH1/PRLL1) and two PPG
down counters (PCNT0, PCNT1).
Widths of “H” and “L” in output pulse are specifiable independently. Cycle and duty factor of output pulse is
specifiable arbitrarily.
Count clock is selectable among 6 internal clocks.
The timer is usable as an interval timer, by generating interrupt requests for each interval.
The time is usable as a D/A converter, with an external circuit.
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