STM32F207VET6 STMicroelectronics, STM32F207VET6 Datasheet - Page 84

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STM32F207VET6

Manufacturer Part Number
STM32F207VET6
Description
MCU ARM 512KB FLASH 100LQFP
Manufacturer
STMicroelectronics
Series
STM32r
Datasheet

Specifications of STM32F207VET6

Core Processor
ARM® Cortex-M3™
Core Size
32-Bit
Speed
120MHz
Connectivity
CAN, Ethernet, I²C, IrDA, LIN, MMC, SPI, UART/USART, USB OTG
Peripherals
Brown-out Detect/Reset, DMA, I²S, LCD, POR, PWM, WDT
Number Of I /o
82
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
Eeprom Size
-
Ram Size
132K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 16x12b; D/A 2x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
100-LFQFP
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
497-11171

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Electrical characteristics
5.3.11
Table 31.
1. Guaranteed by design, not tested in production.
84/163
MODEPER * INCSTEP
Symbol
f
md
Mod
PLL spread spectrum clock generation (SSCG) characteristics
The spread spectrum clock generation (SSCG) feature allows to reduce electromagnetic
interferences (see
SSCG parameters constraint
Equation 1
The frequency modulation period (MODEPER) is given by the equation below:
Equation 2
Equation 2 allows to calculate the increment step (INCSTEP):
An amplitude quantization error may be generated because the linear modulation profile is
obtained by taking the quantized values (rounded to the nearest integer) of MODPER and
INCSTEP. As a result, the achieved modulation depth is quantized. The percentage
quantized modulation depth is given by the following formula:
Figure 34
down spread modes, where:
F0 is f
T
md is the modulation depth.
mode
md
and
PLL_OUT
is the modulation period.
INCSTEP
quantized
Figure 35
Table 37: EMI
nominal.
%
=
=
round
show the main PLL output clock waveforms in center spread and
Peak modulation depth
Modulation frequency
(
MODEPER
MODEPER INCSTEP
[
Doc ID 15818 Rev 6
Parameter
(
(
2
characteristics). It is available only on the main PLL.
15
1
) md
×
=
×
round f
×
[
f
VCO_OUT
PLL_IN
×
100
(
)
4
×
(
×
5
100 5
)
f
Min
0.5
Mod
STM32F205xx, STM32F207xx
-
-
(
(
×
2
)
15
]
×
MODEPER
1
Typ
) f
-
-
-
×
VCO_OUT
Max
2
15
10
2
)
−1
]
(1)
)
Unit
KHz
dec
dec

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