ST7FMC2R7T6TR STMicroelectronics, ST7FMC2R7T6TR Datasheet - Page 217

• Manufacturer Part Number: ST7FMC2R7T6TR
• Description: IC MCU 8BIT 32K FLASH 64-LQFP
• Manufacturer: STMicroelectronics
• Series: ST7r

Specifications of ST7FMC2R7T6TR

• 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: 48KB (48K x 8)
• Program Memory Type: FLASH
• Ram Size: 1.5K 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-LQFP
• 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: -

MOTOR CONTROLLER (Cont’d)
REFERENCE REGISTER (MREF)
Read/Write
Reset Value: 0000 0000 (00h)
Bit 7 = HST: Hysteresis Comparator Value.
This read only bit contains the hysteresis compa-
rator output.
0: Demagnetisation/BEMF comparator is under
1: Demagnetisation/BEMF comparator is above
Bit 6 = CL: Current Loop Comparator Value.
This read only bit contains the current loop compa-
rator output value.
0: Current detect voltage is under V
1: Current detect voltage is above V
Bit 5= CFAV: Current Feedback Amplifier entry
0: OAZ(MCCFI1) is the current comparator entry
1: MCCFI0 is the current comparator entry
HST
V
V
Validation
7
REF
REF
CL
6
CFAV HFE1
5
4
HFE0 HFRQ2 HFRQ1 HFRQ0
3
2
CREF
CREF
1
0
Bits 4:3 = HFE[1:0]: Chopping mode selection
These bits select the chopping mode as shown in
the following table.
Table 71. Chopping mode
Bits 2:0 = HFRQ[2:0] : Chopper frequency selec-
These bits select the chopping frequency.
Table 72. Chopping frequency selection
Note: The chopper signal has a 50% duty cycle.
HFRQ2 HFRQ1 HFRQ0
HFE1
tion
0
0
1
1
0
0
0
0
1
1
1
1
HFE0
0
1
0
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
Both High and Low channels
On High channels only
On Low channels only
ST7MC1xx/ST7MC2xx
F
F
Chopping mode
mtc
frequency
Chopping
mtc
1.33 MHz
100 KHz
200 KHz
400 KHz
500 KHz
800 KHz
1 MHz
2 MHz
= 16MHz
= 8MHz
OFF
F
666.66 MHz
frequency
Chopping
mtc
100 KHz
200 KHz
250 KHz
400 KHz
500 KHz
50 KHz
1 MHz
= 4MHz
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