ST7FMC1K4T6 STMicroelectronics, ST7FMC1K4T6 Datasheet - Page 178
ST7FMC1K4T6
Manufacturer Part Number
ST7FMC1K4T6
Description
MCU 8BIT 16K FLASH 32TQFP
Manufacturer
STMicroelectronics
Series
ST7r
Datasheet
1.ST7FMC2S4T6.pdf
(309 pages)
Specifications of ST7FMC1K4T6
Core Processor
ST7
Core Size
8-Bit
Speed
8MHz
Connectivity
LINSCI
Peripherals
LVD, Motor Control PWM, POR, PWM, WDT
Number Of I /o
17
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
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-LQFP
Processor Series
ST7FMC1x
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
Operating Supply Voltage
4.5 V to 5.5 V
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 ST7MC497-4734 - 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
497-4866
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ST7FMC1K4T6
Manufacturer:
ST
Quantity:
292
Company:
Part Number:
ST7FMC1K4T6
Manufacturer:
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Quantity:
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ST7MC1xx/ST7MC2xx
MOTOR CONTROLLER (Cont’d)
The
(left axis) and the number of BEMF sampling dur-
ing one electrical step with the corresponding ac-
curacy on the measure (right axis) as a function of
the mechanical frequency.
For a given prescaler value (step ratio register) the
mechanical frequency can vary between two fixed
values shown on the graph as the segment ends.
In autoswitched mode, this register is automatical-
ly incremented/decremented when the step fre-
quency goes out of this segment.
Figure 98. Step Ratio Bits decoding and accuracy results and BEMF Sampling Rate
178/309
1
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
ST[3:0]
Step Ratio (Decimal)
Figure 98
avg Zn ~ FFh ± 0.4%
avg Zn ~ 7Fh ± 0.6%
gives the step ratio register value
avg Zn ~ 55h ± 1.2%
F
step
Fn
Fn+1 = 2.Fn
= 6.N.F
3.Fn
3.Fn+1 = 6.Fn
F
N: Pole pair number
step
rpm
: Electrical step frequency
= N.F / 10 ⇔ N.F = 10.F
200 Hz
At f
tio mechanism goes from 2.39 to 235000 (pole
pair x rpm) with a minimum accuracy of 1.2% on
the step period.
To read the number of samples for Zn within one
step (right Y axis), select the mechanical frequen-
cy on the X axis and the sampling frequency curve
used for BEMF detection (PWM frequency or
measurement window frequency). For example,
for N.Frpm = 15,000 and a sampling frequency of
15kHz, there are approximately 10 samples in one
step and there is a 10% error rate on the measure-
ment.
MTC
avg Zn ~ FFh ± 0.4%
avg Zn ~ 7Fh ± 0.6%
=4MHz, the range covered by the Step Ra-
step
avg Zn ~ 55h ± 1.2%
15 kHz
samples
BEMF
N.Frpm
10
4
2
1
ΔZn/Zn
100%
50%
10%
0%
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