Fujitsu FR81S User Manual
CHAPTER 51: TIMING PROTECTION UNIT
1. Overview
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : TIMING PROTECTION UNIT
FUJITSU SEMICONDUCTOR CONFIDENTIAL
3
1. Overview
This section explains the overview of the Timing Protection Unit.
Timing Protection Unit (TPU) is a timer that OS uses for the ensuring safety of the system by the watch of
the time of Task/ISR. The control target that OS supervises is as follows.
Resource lock time
Global interrupt lock time
Task/ISR dead line
Task/ISR runtime
Inter-arrival time ( Interrupt Frequency )
The control registers can be accessed only in a privileged mode because the built-in timers of TPU are
controlled by OS, and the controls are all programmable.
MB91520 Series
MN705-00010-1v0-E
2170