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CHAPTER 15 8/16-BIT PPG TIMER
15.1 Overview of 8/16-bit PPG Timer
15.1
Overview of 8/16-bit PPG Timer
The 8/16-bit PPG timer provides the PPG output via the pulse output according to the
timer operation with the 8-bit reload timer module.
It has the following as a hardware.
• Four 8-bit down counters
• Eight 8-bit reload timers
• Two 16-bit control registers
• Four external pulse output pins
• Four interrupt outputs.
Further, the MB90335 series provides 4 channels as the 8-bit PPG that also operate as
the 16-bit PPG (2 channels) in the combination of PPG0 + PPG1/PPG2 + PPG3.
■ Overview of 8/16-bit Timer PPG Timer
Overview of 8/16-bit PPG timer function is shown below.
●
8-bit PPG output four channel independent operation mode
Independent 4-channel PPG output operation is enabled.
●
16-bit PPG output operation mode
The 2-channel and 16-bit PPG output operation is enabled.
Combination of PPG0 + PPG1 and PPG2 + PPG3 are used.
●
8 + 8-bit PPG output operation mode
When the PPG0 (PPG2) output is clock-input of PPG1 (PPG3), the 8-bit PPG output in an arbiter cycle is
enabled.
●
PPG output operation
Pulse waves in an arbiter cycle and of duty ratio are output.
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FUJITSU MICROELECTRONICS LIMITED
MB90335 Series
CM44-10137-6E
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