C505_9708 SIEMENS [Siemens Semiconductor Group], C505_9708 Datasheet - Page 85

• Manufacturer Part Number: C505_9708
• Description: 8-Bit CMOS Microcontroller
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

6.2.2 Timer/Counter 2 with Additional Compare/Capture/Reload
The timer 2 with additional compare/capture/reload features is one of the most powerful peripheral
units of the C505. lt can be used for all kinds of digital signal generation and event capturing like
pulse generation, pulse width modulation, pulse width measuring etc.
Timer 2 is designed to support various automotive control applications as well as industrial
applications (frequency generation, digital-to-analog conversion, process control ...). Please note
that the functionality of this timer is not equivalent to timer 2 of the C501.
The C505 timer 2 in combination with the compare/capture/reload registers allows the following
operating modes:
The block diagram in figure 6-13 shows the general configuration of timer 2 with the additional
compare/capture/reload registers. The I/O pins which can be used for timer 2 control are located as
multifunctional port functions at port 1 (see table 6-4).
Table 6-4
Alternate Port Functions of Timer 2
Pin Symbol
P1.0 / AN0 / INT3 / CC0
P1.1 / AN1 / INT4 / CC1
P1.2 / AN2 / INT5 / CC2
P1.3 / AN3 / INT6 / CC3
P1.5 / AN5 / T2EX
P1.7 / AN7 / T2
Semiconductor Group
– Compare
– Capture
– Reload
: up to 4 PWM output signals with 65535 steps at maximum, and 300 ns resolution
: up to 4 high speed capture inputs with 300 ns resolution
: modulation of timer 2 cycle time
Function
Compare output / capture input for CRC register
Compare output / capture input for CC register 1
Compare output / capture input for CC register 2
Compare output / capture input for CC register 3
External reload trigger input
External count or gate input to timer 2
6-23
On-Chip Peripheral Components
C505 / C505C
1997-08-01