ST SPC560P34 User Manual

Periodic Interrupt Timer (PIT) RM0046
788/936 Doc ID 16912 Rev 5
The counter period of a running timer can be modified, by first disabling the timer, setting a
new load value and then enabling the timer again (see Figure 463).
It is also possible to change the counter period without restarting the timer by writing the
LDVAL register with the new load value. This value will then be loaded after the next trigger
event (see Figure 464).
Figure 462. Stopping and starting a timer
Figure 463. Modifying running timer period
Figure 464. Dynamically setting a new load value
Debug mode
In Debug mode, the timers are frozen. This is intended to aid software development,
allowing the developer to halt the processor, investigate the current state of the system (e.g.,
timer values) and then continue the operation.
p1p1
Timer Enabled Disable
Timer
p1
Start Value = p1
Trigger
Event
p1
Re-Enable
Timer
p1
Timer Enabled
Disable
Timer,
Start Value = p1
Trigger
Event
Re-Enable
Timer
p1
Set new
Load Value
p2 p2 p2
p1p1
Timer Enabled New Start
Value p2 set
p1 p2
Start Value = p1
p2
Trigger
Event

ST SPC560P34 Specifications

General

Brand	ST
Model	SPC560P34
Category	Microcontrollers
Language	English