STM32F407RGH7 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STM32F407RGH7

ARM Cortex-M4 32b MCU+FPU, 210DMIPS, up to 1MB Flash/192+4KB RAM, USB OTG HS/FS, Ethernet, 17 TIMs, 3 ADCs, 15 comm. interfaces & camera

STMicroelectronics 

Electrical characteristics

STM32F405xx, STM32F407xx

Table 54. SCL frequency (fPCLK1= 42 MHz.,VDD = 3.3 V)(1)(2)

fSCL (kHz)

I2C_CCR value

RP = 4.7 kΩ

400

0x8019

300

0x8021

200

0x8032

100

0x0096

50

0x012C

20

0x02EE

1. RP = External pull-up resistance, fSCL = I2C speed,

2. For speeds around 200 kHz, the tolerance on the achieved speed is of ±5%. For other speed ranges, the

tolerance on the achieved speed ±2%. These variations depend on the accuracy of the external

components used to design the application.

SPI interface characteristics

Unless otherwise specified, the parameters given in Table 55 for SPI are derived from tests

performed under the ambient temperature, fPCLKx frequency and VDD supply voltage

conditions summarized in Table 14 with the following configuration:

• Output speed is set to OSPEEDRy[1:0] = 10

• Capacitive load C = 30 pF

• Measurement points are done at CMOS levels: 0.5 VDD

Refer to Section 5.3.16: I/O port characteristics for more details on the input/output alternate

function characteristics (NSS, SCK, MOSI, MISO).

Symbol

Table 55. SPI dynamic characteristics(1)

Parameter

Conditions

Min

Typ

Max Unit

fSCK

SPI clock frequency

1/tc(SCK)

Duty(SCK)

Duty cycle of SPI clock

frequency

Master mode, SPI1,

2.7V < VDD < 3.6V

Slave mode, SPI1,

2.7V < VDD < 3.6V

Master mode, SPI1/2/3,

1.7V < VDD < 3.6V

Slave mode, SPI1/2/3,

1.7V < VDD < 3.6V

Slave mode

42

-

-

42

MHz

21

-

-

21

30

50

70

%

118/185

DocID022152 Rev 4

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