PSB21473FV13XT Infineon Technologies, PSB21473FV13XT Datasheet - Page 202

• Manufacturer Part Number: PSB21473FV13XT
• Manufacturer: Infineon Technologies

Specifications of PSB21473FV13XT

• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3.135V
• Operating Supply Voltage (max): 3.6V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 144
• Lead Free Status / RoHS Status: Compliant

Data Sheet
Figure 14-12 GPT1 Auxiliary Timer in Reload Mode
Upon a trigger signal T3 is loaded with the contents of the respective timer register (T2
or T4) and the interrupt request flag (T2IR or T4IR) is set.
Note: When a T3OTL transition is selected for the trigger signal, also the interrupt
The reload mode triggered by T3OTL can be used in a number of different
configurations. Depending on the selected active transition the following functions can
be performed:
l If both a positive and a negative transition of T3OTL is selected to trigger a reload, the core timer
l If either a positive or a negative transition of T3OTL is selected to trigger a reload, the core timer
l Using this “single-transition” mode for both auxiliary timers allows to perform very flexible pulse
The figure below shows an example for the generation of a PWM signal using the
alternate reload mechanism. T2 defines the high time of the PWM signal (reloaded on
positive transitions) and T4 defines the low time of the PWM signal (reloaded on negative
transitions). The PWM signal can be output on line T3OUT if the control bit T3OE is set
Note: Line ’*’ only affected by over/underflows of T3, but NOT by software
will be reloaded with the contents of the auxiliary timer each time it overflows or underflows. This
is the standard reload mode (reload on overflow/underflow).
will be reloaded with the contents of the auxiliary timer on every second overflow or underflow.
width modulation (PWM). One of the auxiliary timers is programmed to reload the core timer on
a positive transition of T3OTL, the other is programmed for a reload on a negative transition of
T3OTL. With this combination the core timer is alternately reloaded from the two auxiliary timers.
request flag T3IR will be set upon a trigger, indicating T3’s overflow or underflow.
Modifications of T3OTL via software will NOT trigger the counter function of T2/T4.
modifications of T3OTL.
202
General Purpose Timer Unit
PSB 21473
2003-03-31
INCA-D