STEVAL-IFS012V1 STMicroelectronics, STEVAL-IFS012V1 Datasheet - Page 89
STEVAL-IFS012V1
Manufacturer Part Number
STEVAL-IFS012V1
Description
BOARD ST72651AR6/STTS75/STLM20
Manufacturer
STMicroelectronics
Specifications of STEVAL-IFS012V1
Sensor Type
Temperature
Sensing Range
Depends on IC
Interface
I²C, USB
Sensitivity
Depends on IC
Voltage - Supply
5V
Embedded
Yes, MCU, 8-Bit
Utilized Ic / Part
ST72F651AR6, STTS75, STLM20
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-8419
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Part Number
Manufacturer
Quantity
Price
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PWM/BRM GENERATOR (Cont’d)
PWM/BRM Outputs
The PWM/BRM outputs are assigned to dedicated
pins.
The PWM/BRM outputs can be connected to an
RC filter (see
The RC filter time must be higher than T
Figure 49. Typical PWM Output Filter
Figure 50. PWM Simplified Voltage Output After Filtering
OUTPUT
STAGE
VOLTAGE
VOLTAGE
PWMOUT
PWMOUT
OUTPUT
OUTPUT
V
V
V
V
0V
0V
0V
0V
DD
DD
DD
DD
"CHARGE"
Figure 49
"CHARGE"
for an example).
"DISCHARGE"
R
ext
"DISCHARGE"
CPU
OUTPUT
VOLTAGE
C
Doc ID 7215 Rev 4
ext
x64.
"CHARGE"
Table 29. 6-Bit PWM Ripple After Filtering
With RC filter (R=1KΩ),
f
V
PWM Duty Cycle 50%
R=R
Note: after a reset these pins are tied low by de-
fault and are not in a high impedance state.
CPU
DD
"CHARGE"
Cext (µF)
= 8 MHz
= 5V
ext
0.128
1.28
12.8
"DISCHARGE"
"DISCHARGE"
V RIPPLE (mV)
V
ripple
0.78
7.8
V ripple (mV)
78
ST72651AR6
(mV)
V
V
OUTAVG
OUTAVG
89/161
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