PSB21473FV13XT Infineon Technologies, PSB21473FV13XT Datasheet - Page 215

• 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

INCA-D
PSB 21473
General Purpose Timer Unit
Figure 14-23 Timer Block 2 Register CAPREL in Capture-And-Reload Mode
This combined mode can be used to detect consecutive external events which may
occur aperiodically, but where a finer resolution, that means, more 'ticks' within the time
between two external events is required.
For this purpose, the time between the external events is measured using timer T5 and
the CAPREL register. Timer T5 runs in timer mode counting up with a frequency of e.g.
f
/32. The external events are applied to line CAPIN. When an external event occurs,
Timer
the timer T5 contents are latched into register CAPREL, and timer T5 is cleared (T5CLR
= ‘1’). Thus, register CAPREL always contains the correct time between two events,
measured in timer T5 increments. Timer T6, which runs in timer mode counting down
with a frequency of e.g. f
/4, uses the value in register CAPREL to perform a reload
Timer
on underflow. This means, the value in register CAPREL represents the time between
two underflows of timer T6, now measured in timer T6 increments. Since timer T6 runs
8 times faster than timer T5, it will underflow 8 times within the time between two external
events. Thus, the underflow signal of timer T6 generates 8 'ticks'. Upon each underflow,
Data Sheet
215
2003-03-31