sak-c868p-1rr Infineon Technologies Corporation, sak-c868p-1rr Datasheet - Page 99
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sak-c868p-1rr
Manufacturer Part Number
sak-c868p-1rr
Description
8 - Bit Cmos Microcontroller
Manufacturer
Infineon Technologies Corporation
Datasheet
1.SAK-C868P-1RR.pdf
(266 pages)
- Current page: 99 of 266
- Download datasheet (4Mb)
Figure 4-33
Note: In order to avoid spikes on the output lines, the seven output signals (CC60,
4.7.6
In Brushless-DC motors the next multi-channel state values depend on the pattern of
the Hall inputs. There is a strong correlation between the Hall pattern (CURH) and the
modulation pattern (MCMP). Because of different machine types the modulation
pattern for driving the motor can be different. Therefore it is wishful to have a wide
flexibility in defining the correlation between the Hall pattern and the corresponding
modulation pattern. The CCU6 offers this by having a register which contains the actual
Hall pattern (CURHS), the next expected Hall pattern (EXPHS) and its output pattern
(MCMPS). At every correct Hall event (CHE, see figure Hall Event Actions) a new Hall
pattern with its corresponding output pattern can be loaded (from a predefined table) by
software into the register MCMOUTS. Loading this shadow register can also be done by
a write action on MCMOUTS with bit STRHP = ’1’.
The sampling of the Hall pattern (on CCPOSx) is done with the T12 clock. By using the
dead-time counter DTC0 (mode MSEL6x= ’1000’) a hardware noise filter can be
implemented to suppress spikes on the Hall inputs due to high di/dt in rugged inverter
environment. In case of a Hall event the DTC0 is reloaded and starts counting. When the
counter value of one is reached, the CCPOSx inputs are sampled (without noise and
spikes) and are compared to the current Hall pattern (CURH) and to the expected Hall
pattern (EXPH). If the sampled pattern equals to the current pattern the edge on
CCPOSx was due to a noise spike and no action will be triggered (implicit noise filter). If
User’s Manual
COUT63_T13_o
COUT60, CC61, COUT61, CC62, COUT62, COUT63) are registered out with the
peripheral clock.
TRPEN13
ECT13O
TRPS
Hall Sensor Mode
Modulation Control of the T13-related Output COUT63
A
N
D
A
N
D
4-55
A
N
D
On-Chip Peripheral Components
0 = passive state
1 = active state
PSL63
1
0
to output
pin
COUT63
V 1.0, 2003-01
C868
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