ST7MC2S6 STMicroelectronics, ST7MC2S6 Datasheet - Page 213
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ST7MC2S6
Manufacturer Part Number
ST7MC2S6
Description
8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC,BRUSHLESS MOTOR CONTROL, 5 TIMERS, SPI, LINSCI(TM)
Manufacturer
STMicroelectronics
Datasheet
1.ST7MC1K4.pdf
(309 pages)
Specifications of ST7MC2S6
Hdflash Endurance
100 cycles, data retention
Clock Sources
crystal/ceramic resonator oscillators and by-pass for external clock, clock security system.
Four Power Saving Modes
Halt, Active-Halt, Wait and Slow
Main Clock Controller With
Real time base, Beep and Clock-out capabilities
Two 16-bit Timers With
2 input captures, 2 output compares, external clock input, PWM and pulse generator modes
8-bit Pwm Auto-reload Timer With
2 input captures, 4 PWM outputs, output compare and time base interrupt, external clock with event detector
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MOTOR CONTROLLER (Cont’d)
Table 62. PWM mode when SR=1
Table 63. PWM mode when DAC=1
Warning: As the MCRB register contains preload
bits with, it has to be written as a complete byte. A
Bit Set or Bit Reset instruction on a non-preload bit
will have the effect of resetting all the preload bits.
CONTROL REGISTER C (MCRC)
Read/Write (except EDIR bit)
Reset Value: 0000 0000 (00h)
Bit 7= SEI/OI: Speed Error interrupt flag / MTIM
Overflow flag
Position Sensor or Sensorless mode (TES[1:0]
bits =00):
OI: MTIM Overflow flag
This flag signals an overflow of the MTIM timer. It
0: No MTIM timer overflow
1: MTIM timer overflow
Note: No interrupt is associated with this flag
Speed Sensor mode (TES[1:0] bits =01, 10, 11):
OS2
OS2
SEI /
bit
bit
0
1
x
OI
has to be cleared by software.
7
PWM after
Channels
Channels
before Z
On High
EDIR/
Unused
On Low
C and
HZ
6
x
SZ
5
OS1
OS1
bit
bit
x
x
x
SC
4
Unused OS0
Unused OS0
x
x
x
SPLG
3
0
1
0
1
0
1
VR2
2
PWM after Z
and before
channels
channels
channels
channels
PWM on
channels
channels
outputs
VR1
On high
On high
On high
next C
On low
On low
On low
1
VR0
0
SEI: Speed error interrupt flag
0: No Tacho Error interrupt pending
1: Tacho Error interrupt pending
Bit 6= EDIR/HZ : Encoder Direction bit/ Hardware
Position Sensor or Sensorless mode (TES[1:0]
bits =00):
HZ: Hardware zero-crossing event bit
This Read/Write bit selects if the Z event is hard-
ware or not.
0: No hardware zero-crossing event
1: Hardware zero-crossing event
Speed Sensor mode (TES[1:0] bits =01, 10, 11):
EDIR:Encoder Direction bit
This bit is Read only. As the rotation direction de-
pends on encoder outputs and motor phase con-
nections, this bit cannot indicate absolute direc-
tion. It therefore gives the relative phase-shift (i.e.
advance/delay) between the two signals in quad-
rature output by the encoder (see
0: MCIA input delayed compared to MCIB input.
1: MCIA input in advance compared to MCIB input
Bit 5 = SZ: Simulated zero-crossing event bit
0: No simulated zero-crossing event
1: Simulated zero-crossing event
Bit 4 = SC: Simulated commutation event bit
0: Hardware commutation event in auto-switched
1: Simulated commutation event in auto-switched
Bit 3 = SPLG: Sampling Z event at high frequency
This bit enables sampling at high frequency in sen-
sorless mode independently of the PWM signal or
only during ON time if the DS[3:0] bits in the
MCONF register contain a value. Refer to
Table 77, “Sampling Delay,” on page 224
0: Normal mode (Z sampling at PWM frequency at
1: Z event sampled at f
Note: When the SPLG bit is set, there is no mini-
mum OFF time programmed by the OT [3:0] bits,
the OFF time is forced to 0µs. This means that in
current mode, the OFF time of the PWM signal will
come only from the current loop.
zero-crossing event bit
mode (SWA = 1 in MCRA register)
mode (SWA = 1 in MCRA register).
in sensorless mode (SR=0)
the end of the off time)
SCF
ST7MC1xx/ST7MC2xx
(see
Table
Figure
82)
90).
213/309
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