ST7FMC2S4T3 STMicroelectronics, ST7FMC2S4T3 Datasheet - Page 140

IC MCU 8BIT 16K FLASH 44-LQFP

ST7FMC2S4T3

Manufacturer Part Number
ST7FMC2S4T3
Description
IC MCU 8BIT 16K FLASH 44-LQFP
Manufacturer
STMicroelectronics
Series
ST7r
Datasheet

Specifications of ST7FMC2S4T3

Core Processor
ST7
Core Size
8-Bit
Speed
8MHz
Connectivity
LINSCI, SPI
Peripherals
LVD, Motor Control PWM, POR, PWM, WDT
Number Of I /o
26
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
768 x 8
Voltage - Supply (vcc/vdd)
3.8 V ~ 5.5 V
Data Converters
A/D 16x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 125°C
Package / Case
44-LQFP
Processor Series
ST7FMC2x
Core
ST7
Data Bus Width
8 bit
Data Ram Size
768 B
Interface Type
SCI, SPI
Maximum Clock Frequency
8 MHz
Number Of Programmable I/os
60
Number Of Timers
3
Maximum Operating Temperature
+ 125 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

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ST7FMC2S4T3
Manufacturer:
STMicroelectronics
Quantity:
10 000
ST7MC1xx/ST7MC2xx
MOTOR CONTROLLER (Cont’d)
10.6.3 Application Example: PM BLDC motor
drive
This example shows a six-step command se-
quence for a 3-phase permanent magnet DC
brushless motor (PM BLDC motor).
shows the phase steps and voltage, while
24
To run this kind of motor efficiently, an autoswitch-
ing mode has to be used, i.e. the position of the ro-
tor must self-generate the powered winding com-
mutation. The BEMF zero crossing (Z event) on
the non-excited winding is used by the MTC as a
rotor position sensor. The delay between this
event and the commutation is computed by the
MTC and the hardware commutation event C
automatically generated after this delay.
After the commutation occurs, the MTC waits until
the winding is completely demagnetized by the
free-wheeling diode: during this phase the winding
is tied to 0V or to the HV high voltage rail and no
BEMF can be read. At the end of this phase a new
BEMF zero-crossing detection is enabled.
140/309
1
shows the relevant phase configurations.
Figure 74
Table
n
is
The end of demagnetization event (D), is also de-
tected by the MTC or simulated with a timer com-
pare feature when no detection is possible.
The MTC manages these three events always in
the same order: Z generates C after a delay com-
puted in realtime, then waits for D in order to ena-
ble the peripheral to detect another Z event.
The BEMF zero-crossing event (Z), can also be
detected by the MTC or simulated with a timer
compare feature when no detection is possible.
The speed regulation is managed by the micro-
controller, by means of an adjustable reference
current level in case of current control, or by direct
PWM duty-cycle adjustment in case of voltage
control.

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