ST7MC2N6 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
ST7MC2N6
STMicroelectronics
ST7MC2N6 Datasheet PDF : 309 Pages
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ST7MC1xx/ST7MC2xx
MOTOR CONTROLLER (Cont’d)
CONFIGURATION REGISTER (MCONF)
Read/Write
Reset Value: 0000 0010 (02h)
7
6
5
4
3
2
1
0
DS3 DS2 DS1 DS0 SOI SOM XT16 XT8
Bits 7:4 = DS[3:0]: Delay for sampling at Ton
These bits are used to define the delay inserted
before sampling in order to sample during PWM
ON time.
Table 77. Sampling Delay
DS3 DS2 DS1 DS0 Delay added to sample at Ton
0 0 0 0 No delay added. Sample during Toff
0001
2.5 µs
0010
5 µs
0011
7.5 µs
0100
10 µs
0101
12.5 µs
0110
15 µs
0111
17.5 µs
1000
20 µs
1001
22.5 µs
1010
25 µs
1011
27.5 µs
1100
30 μs
1101
32.5 μs
1110
35 μs
1111
37.5 μs
Note: Times are indicated for 4 MHz fPERIPH
Bit 3 = SOI Sampling Out Interrupt flag.
This interrupt indicates that the sampling that
should have been done during Ton has occured
during the next Toff. In this case, the sample is dis-
carded.
0: No Sampling Out Interrupt Pending
1: Sampling Out Interrupt Pending
Bit 2 = SOM: Sampling Out Mask bit.
This interrupt is available only for Z event sampling
as D event sampling is always done at fSCF high
frequency.
0: Sampling Out interrupt disabled
1: Sampling Out interrupt enabled
This interrupt is available only when a delay has
been set in the DS[3:0] bits in the MCONF register.
Note: It is recommended to disable the sampling
out interrupt when software Z event is enabled (SZ
bit in MCRC register is set) and if the value in the
DS[3:0] bits is modified to change the sampling
method during the application.
Bits [1:0] = XT16:XT8 BLDC drive Motor Control
Peripheral input frequency selection:
Table 78. Peripheral frequency
XT16
0
0
1
1
XT8
0
1
0
1
Peripheral frequency
fPERIPH=fMTC
fPERIPH=fMTC/2
fPERIPH=fMTC/4
fPERIPH=fMTC/4
(same as XT16=1,XT8=0)
Caution: It is recommended to set the peripheral
frequency to 4MHz. Setting fPERIPH=fMTC is used
mainly when fclk = 4MHz (for low power consump-
tion).
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