st7pmc2s6 STMicroelectronics, st7pmc2s6 Datasheet - Page 275

• Manufacturer Part Number: st7pmc2s6
• Description: 8-bit Mcu For Automotive With Nested Interrupts, Flash, 10-bit Adc, Brushless Motor Control, 5 Timers, Spi, Linsci?
• Manufacturer: STMicroelectronics

ST7MC1K2-Auto, ST7MC1K6-Auto, ST7MC2S4-Auto, ST7MC2S6-Auto
Reference register (MREF)
Table 142. MREF register description
Table 143. Chopping frequency selection
1. The chopper signal has a 50% duty cycle.
MREF
4:3
2:0 HFRQ[2:0]
Bit
7
6
5
HST
R/W
HFRQ2
7
HFE[1:0]
0
0
0
0
1
1
1
1
Name
CFAV
HST
CL
R/W
CL
Hysteresis comparator value
Current loop comparator value
Current feedback amplifier entry validation
Chopping mode selection
Chopper frequency selection
6
This read only bit contains the hysteresis comparator output.
0: Demagnetization/BEMF comparator is under V
1: Demagnetization/BEMF comparator is above V
This read only bit contains the current loop comparator output value.
0: Current detect voltage is under V
1: Current detect voltage is above V
0: OAZ(MCCFI1) is the current comparator entry
1: MCCFI0 is the current comparator entry
These bits select the chopping mode:
00: Chopping mode = off
01: Chopping mode = on low channels only
10: On high channels only
11: Both high and low channels
These bits select the chopping frequency (see
HFRQ1
0
0
1
1
0
0
1
1
CFAV
R/W
5
HFRQ0
0
1
0
1
0
1
0
1
4
HFE[1:0]
R/W
(1)
F
Function
F
CREF
mtc
CREF
mtc
3
1.33 MHz
100 kHz
200 kHz
400 kHz
500 kHz
800 kHz
1 MHz
2 MHz
= 16MHz
= 8MHz
Chopping frequency
Table
2
REF
REF
Reset value: 0000 0000 (00h)
143).
HFRQ[2:0]
On-chip peripherals
R/W
F
1
666.66 MHz
mtc
100 kHz
200 kHz
250 kHz
400 kHz
500 kHz
50 kHz
1 MHz
= 4MHz
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