C517A Datasheet, PDF (33/72 Pages) Siemens Semiconductor Group – 8-Bit CMOS Microcontroller

C517A
The main functional blocks of the CCU are :
– Timer 2 with f_OSC/12 input clock, 2-bit prescaler, 16-bit reload, counter/gated timer mode and
overflow interrupt request.
– Compare timer with f_OSC/2 input clock, 3-bit prescaler, 16-bit reload and overflow interrupt
request.
– Compare/(reload/)capture register array consisting of four different kinds of registers:
one 16-bit compare/reload/capture register,
three 16-bit compare/capture registers,
one 16-bit compare/capture register with additional "concurrent compare" feature,
eight 16-bit compare registers with timer-overflow controlled loading.
Table 5 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 5
CCU Configurations
Assigned
Timer
Timer 2
Compare
Timer
Compare
Register
CRCH/CRCL
CCH1/CCL1
CCH2/CCL2
CCH3/CCL3
CCH4/CCL4
CCH4/CCL4
CMH0/CML0
to
CMH7/CML7
COMSET
COMCLR
CMH0/CML0
to
CMH7/CML7
Compare Output at Possible Modes
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
to
P5.7/CCM7
P4.0/CM0
to
P4.7/CM7
P5.0/CCM0
to
P5.7/CCM7
P4.0/CM0
to
P4.7/CM7
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
Semiconductor Group
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