SAB-C509-LM SIEMENS [Siemens Semiconductor Group], SAB-C509-LM Datasheet - Page 43

• Manufacturer Part Number: SAB-C509-LM
• Description: 8-Bit CMOS Microcontroller
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

The block diagram in figure 18 shows the general configuration of the CCU. All CC1 to CC4
registers and the CRC register are exclusively assigned to timer 2. Each of the eight compare
registers CM0 through CM7 can either be assigned to timer 2 or to the faster compare timer, e.g. to
provide up to 8 PWM output channels. The assignment of the CMx registers - which can be done
individually for every single register - is combined with an automatic selection of one of the two
possible compare modes. The compare/capture registers CC10 to CC17 and the reload register
CT1REL are assigned to compare timer 1 and are mapped to the corresponding registers of the
compare timer.
The compare function and the reaction of the corresponding outputs depend on the timer/compare
register combination. Table 7 shows the possible configurations of the CCU and the corresponding
compare modes which can be selected. The following sections describe the function of these
configurations.
Table 7
CCU Configurations
Assigned
Timer
Timer 2
Compare
Timer
Compare
Timer 1
Semiconductor Group
Compare
Register
CRCH/CRCL
CCH1/CCL1
CCH2/CCL2
CCH3/CCL3
CCH4/CCL4
CCH4/CCL4
CMH0/CML0
CMH7/CML7
COMSET
COMCLR
CMH0/CML0
CMH7/CML7
CC1H0/CC1L0
CC1H7/CC1L7
to
to
to
Compare Output at
P1.0/INT3/CC0
P1.1/INT4/CC1
P1.2/INT5/CC2
P1.3/INT6/CC3
P1.4/INT2/CC4
P1.4/INT2/CC4
P5.0/CCM0
P5.7/CCM7
P4.0/CM0
P4.7/CM7
P5.0/CCM0
P5.7/CCM7
P4.0/CM0
P4.7/CM7
P5.0/CCM0
P5.7/CCM7
to
to
to
to
to
42
Possible Modes
Compare mode 0, 1 + Reload
Compare mode 0, 1 / capture
Compare mode 0, 1 / capture
Compare mode 0, 1 / capture
Compare mode 0, 1 / capture)
Compare mode 1
“Concurrent compare“
Compare mode 0
Compare mode 2
Compare mode 1
Compare mode 0 / capture
C509-L