STM32MP151AAB3 datasheet(204/245 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32MP151A

204/245

DS12500 Rev 1

6.3.30

Digital filter for sigma-delta modulators (DFSDM) characteristics

Unless otherwise specified, the parameters given in Table 86 for DFSDM are derived from

tests performed under the ambient temperature, fpclkx frequency and VDD supply voltage

summarized in Table 13: General operating conditions, 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 0.3.16: I/O port characteristics for more details on the input/output alternate

function characteristics (DFSDMx_CKINx, DFSDMx_DATINx, DFSDMx_CKOUT for

DFSDMx).

Table 86. DFSDM measured timing

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fDFSDMCLK

DFSDM clock

1.71 V < VDD < 3.6 V

fSYSCLK

MHz

fCKIN

(1/TCKIN)

Input clock

frequency

SPI mode (SITP[1:0]=0,1),

External clock mode

(SPICKSEL[1:0]=0),

1.71 V < VDD < 3.6 V

(fDFSDMCLK/4)

SPI mode (SITP[1:0]=0,1),

External clock mode

(SPICKSEL[1:0]=0),

2.7 < VDD < 3.6 V

(fDFSDMCLK/4)

SPI mode (SITP[1:0]=0,1),

Internal clock mode

(SPICKSEL[1:0]

≠0),

1.71 < VDD < 3.6 V

(fDFSDMCLK/4)

SPI mode (SITP[1:0]=0,1),

Internal clock mode

(SPICKSEL[1:0]

≠0),

2.7 < VDD < 3.6 V

(fDFSDMCLK/4)

fCKOUT

Output clock

frequency

1.71 < VDD < 3.6 V

DuCyCKOUT

Output clock

frequency duty

cycle

1.71 < VDD < 3.6 V

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