ST7FMC2R7T6TR STMicroelectronics, ST7FMC2R7T6TR Datasheet - Page 170

• 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: -

ST7MC1xx/ST7MC2xx
MOTOR CONTROLLER (Cont’d)
Figure 92. Step Ratio Functional Diagram
170/309
1
** Only in Auto-switched mode (SWA=1 in MCRA register)
MCOMP = MCOMP/2**
MZREG = MZREG / 2
MDREG = MDREG/2
MTIM Timer Overflow
Ratio = Ratio + 1
MZPRV = MZPRV/2
Counter = Counter/2
MPRSR Register
Slow-down control
Ratio < Fh?
Begin
End
Yes
MTIM Timer control over T
No
+1
-1
ST[3:0] Bits
MTIM Timer = 100h?
R-
R+
Zn < 55h?
4
ratio
Z Capture with MTIM Timer Underflow (Zn < 55h)
and register operation
2 MHz - 62.5 Hz
1 / 2Ratio
f
PERIPH
MDREG = MDREG x 2
1 / 2
MZREG = MZREG x 2
Counter = Counter x 2
MZPRV = MZPRV x 2
Ratio = Ratio - 1
Compute MCOMP
Tratio
ck
Speed-up control
Ratio > 0?
Begin
End
Yes
No