ST7FMC2S4T6 STMicroelectronics, ST7FMC2S4T6 Datasheet - Page 278

• Manufacturer Part Number: ST7FMC2S4T6
• Description: MCU 8BIT 16K FLASH 44-LQFP
• Manufacturer: STMicroelectronics
• Series: ST7r

Specifications of ST7FMC2S4T6

• 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: Internal
• Operating Temperature: -40°C ~ 85°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
• 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 ST7MC497-8213 - BOARD EVAL ST7FMC2S4T6/STS8DNH3L497-6408 - 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: 497-4870

ST7MC1xx/ST7MC2xx
MOTOR CONTROL CHARACTERISTICS (Cont’d)
12.12.3 Input Stage (Current Feedback Comparator + Sampling)
Notes:
1. The comparator accuracy depends on the environment. In particular, the following cases may reduce the accuracy of
the comparator and must be avoided:
– Negative injection current on the I/Os close to the comparator inputs
– Switching on I/Os close to the comparator inputs
– Negative injection current on not used comparator input (MCCFI0 or MCCFI1)
– Switching with a high dV/dt on not used comparator input (MCCFI0 or MCCFI1)
These phenomena are even more critical when a big external serial resistor is added on the inputs.
2. This filter is implemented to wait for comparator stabilization and avoid any wrong information during start-up.
3.This delay represents the number of clock cycles needed to generate an event as soon as the comparator ouput chang-
es.
Example: When CFF=0 (detection is based on a single detection), MCO outputs are turned OFF at the 4th clock cycle
after comparator commutation, i.e. there is a variation of (1/f
278/309
Symbol
t
sampling
t
t
V
I
propag
startup
offset
V
offset
IN
Comparator input voltage range
Comparator offset error
Input offset current
Comparator propagation
delay
Start-up filter duration
Digital sampling delay
1)
Parameter
2)
3)
Time waited before sampling
when comparator is turned
ON, i.e. CKE=1 or DAC=1
(with f
Time needed to turn OFF the
MCOs when comparator out-
put rises (CFF=0)
Time between a comparator
toggle (current loop event)
and bit CL becoming set
(CFF=0)
Time needed to turn OFF the
MCOs when comparator out-
put rises (CFF=x)
Time between a comparator
toggle (current loop event)
and bit CL becoming set
(CFF=x)
PERIPH
Conditions
= 4MHz)
mtc
) or (4 / f
PERIPH
V
SSA
) depending on the case.
Min
- 0.1
(1+x) * (4 / f
(1+x) * (4 / f
4 / f
2 / f
MTC
MTC
(see
(see
Typ
35
5
3
(see
(see
Figure
Figure
PERIPH
PERIPH
Figure
Figure
) + (3 / f
) + (1 / f
V
156)
156)
DD
Max
40
100
155)
+ 0.1
1
155)
1)
mtc
mtc
)
)
Unit
mV
μA
ns
μs
V