st7fmc2s7t6 STMicroelectronics, st7fmc2s7t6 Datasheet - Page 276
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st7fmc2s7t6
Manufacturer Part Number
st7fmc2s7t6
Description
8-bit Mcu With Nested Interrupts, Flash, 10-bit Adc, Brushless Motor Control, Five Timers, Spi, Linsci
Manufacturer
STMicroelectronics
Datasheet
1.ST7FMC2S7T6.pdf
(308 pages)
- Current page: 276 of 308
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ST7MC1/ST7MC2
MOTOR CONTROL CHARACTERISTICS (Cont’d)
Figure 154. Example 5: Waveforms for sensor HST update timing diagram for a newly selected
phase input
276/308
Sampling of sensor input is done at f
for input selection, you have to wait:
1) 1/f
2) 100ns corresponding to the comparator & multiplexer propagation delay (d)
3) 1/f
4) 1/fmtc to resynchronize the data and set the HST bit
Example with f
Secure
waiting
time
to read HST
SCF[1:0]
f
SCF
f
f
MCIx
Comparator
output
sample
write IS[1:0] = 01
HST (MCRC)
IS[1:0] (MPHST)
mtc
SCF
mtc
SCF
= 2 x fcpu
to resynchronize the data and set the MCIx bit
to sample the comparator output
PERIPH
1MHz 500kHz 250kHz 125kHz
00
2µs
= f
mtc
3µs
XX
01
= 4MHz :
d
5µs
10
SCF
, so after writing IS[1:0] in the MPHST register
9µs
11
01
Sampling time
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