Overview Of 8/16-Bit Ppg Timer - Fujitsu F2MC-16LX Hardware Manual
Mb90470 series 16-bit microcontroller
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Also See for F2MC-16LX:
- Hardware manual (706 pages) ,
- Application note (13 pages) ,
- Operation manual (10 pages)
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CHAPTER 17 8/16-BIT PPG TIMER
17.1 Overview of 8/16-bit PPG Timer
The 8/16-bit PPG timer is an 8-bit reload timer module used to output pulses based on
the timer operation for PPG output.
On the hardware level, the timer consists of six 8-bit decrement counters, twelve 8-bit
reload timers, three 16-bit control registers, six external pulse output pins and six
interrupt outputs. The MB90470 has six channels that can be used for 8-bit PPG,
enabling paired operation of PPG0/PPG1, PPG2/PPG3, and PPG4/PPG5 for 16-bit PPG
operation (3 channels).
I Outline of 8/16-bit PPG timer specifications
An outline of the 8/16-bit PPG timer functions is listed below:
❍ 8-bit PPG output 6 channel independent operation mode
Provides independent PPG output operation with six channels.
❍ 16-bit PPG output operation mode
Provides 16-bit PPG output operation with three channels.
This is achieved by combining PPG0 + PPG1, PPG2 + PPG3 and PPG4 + PPG5.
❍ 8 + 8-bit PPG output operation mode
PPG0 (PPG2/PPG4) output is used as PPG1 (PPG3/PPG5) clock input, enabling an arbitrary
interval to be used for 8-bit PPG output.
❍ PPG output operation
Provides an arbitrary interval and duty ratio for pulse wave output.
Used in combination with an externally attached circuit for providing a D/A converter.
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