SAK-C167CR-4RM

Manufacturer Part NumberSAK-C167CR-4RM
Description16 Bit Single-Chip Microcontroller
ManufacturerInfineon Technologies AG
SAK-C167CR-4RM datasheet
 
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Page 56/74:

Direct Drive

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Direct Drive

When direct drive is configured (CLKCFG = 011
disabled and the CPU clock is directly driven from the internal oscillator with the input
clock signal.
f
The frequency of
directly follows the frequency of
CPU
f
(i.e. the duration of an individual TCL) is defined by the duty cycle of the input clock
CPU
f
.
OSC
The timings listed below that refer to TCLs therefore must be calculated using the
minimum TCL that is possible under the respective circumstances. This minimum value
can be calculated via the following formula:
× DC
f
TCL
= 1/
min
OSC
For two consecutive TCLs the deviation caused by the duty cycle of
so the duration of 2TCL is always 1/
be used only once for timings that require an odd number of TCLs (1, 3, …). Timings that
require an even number of TCLs (2, 4, …) may use the formula 2TCL = 1/
Data Sheet
) the on-chip phase locked loop is
B
(DC = duty cycle)
min
f
. The minimum value TCL
OSC
52
C167CR
C167SR
f
so the high and low time of
OSC
f
is compensated
OSC
therefore has to
min
f
.
OSC
V3.2, 2001-07