ST7FMC2R6T6 STMicroelectronics, ST7FMC2R6T6 Datasheet - Page 176

• Manufacturer Part Number: ST7FMC2R6T6
• Description: MCU 8BIT 32K FLASH 64TQFP
• Manufacturer: STMicroelectronics
• Series: ST7r

Specifications of ST7FMC2R6T6

• Core Processor: ST7
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: LINSCI, SPI
• Peripherals: LVD, Motor Control PWM, POR, PWM, WDT
• Number Of I /o: 44
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 3.8 V ~ 5.5 V
• Data Converters: A/D 16x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TQFP, 64-VQFP
• Processor Series: ST7FMC2x
• Core: ST7
• Data Bus Width: 8 bit
• Data Ram Size: 1 KB
• Interface Type: SCI, SPI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 60
• Number Of Timers: 3
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: ST7MC-KIT/BLDC, ST7MDT50-EMU3, STX-RLINK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 16 Channel
• For Use With: 497-8402 - BOARD EVAL COMPLETE INVERTER497-8400 - KIT IGBT PWR MODULE CTRL ST7MC497-6408 - BOARD EVAL BLDC SENSORLESS MOTOR497-4734 - EVAL KIT 3KW POWER DRIVER BOARD497-4733 - EVAL KIT 1KW POWER DRIVER BOARD497-4732 - EVAL KIT 300W POWER DRIVER BOARD497-4731 - EVAL KIT PWR DRIVER CONTROL BRD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details
• Other names: 497-4868

ST7MC1xx/ST7MC2xx
MOTOR CONTROLLER (Cont’d)
When using hardware commutation C
quence of events needed is C
Z events and the value written in the registers are
checked at different times.
If SDM bit is set, meaning simulated demagnetisa-
tion, a value must be written in the MDREG regis-
ter to generate the simulated demagnetisation.
This value must be written after the C (either C
C
tion.
If SZ bit is set, meaning simulated zero-crossing
event, a value must be written in the MZREG reg-
ister to generate the simulated zero-crossing. This
value must be written after the D event (D
preceding the simulated zero-crossing.
When using simulated commutation (C
sult of the 8*8 hardware multiplication of the delay
manager is not taken in account and must be over-
written if the SC bit has been set in a Z event inter-
rupt and the sequence of events is broken mean-
ing that several consecutive simulated commuta-
tions can be implemented.
As soon as the SC bit is set in the MCRC register,
the system won’t necessarily expect a D event af-
ter a C event. This can be used for an application
in sensor mode with only one Hall Effect sensor for
example.
Be careful that the D and Z events are not ignored
by the peripheral, this means that for example if a
176/309
1
H
) event preceding the simulated demagnetisa-
H
then D and finally
H
S
, the se-
), the re-
H
or D
s
or
S
)
Z event occurs, the MTIM timer is reset. In Simu-
lated Commutation mode, the sequence D -> Z is
expected, and this order must be repected.
As the sequence of events may not be the same
when using simulated commutation, as soon as
the SC bit is set, the capture/compare feature and
protection on MCOMP register is reestablished
only after a write to the MCOMP register. This
means that as soon as the SC bit is set, if no write
access is done to the MCOMP register, no com-
mutation event will be generated, whatever the
value of MCOMP compared to MTIM at the time
SC is set. This does not depend on the running
mode: switched or autoswitched mode (SWA bit).
If software commutation event is used with a nor-
mal sequence of events C-->D-->Z, it is recom-
mended to write the MCOMP register during the Z
interrupt routine to avoid any spurious comparison
as several consecutive C
ed.
Note that two different simulated events can be
used in the same step (like D
Note also that for more precision, it is recommend-
ed to use the value captured from the preceding
hardware event to compute the value used to gen-
erate simulated events.
Figure
of simulated event generation.
95,
Figure 96
and
s
Figure 97
events can be generat-
S
followed by Z
shows details
S
).