ST STM32F412 User Manual

Digital filter for sigma delta modulators (DFSDM) RM0402
352/1163 RM0402 Rev 6
1. This example shows 2 DFSDM filters and 4 input channels.
14.4.2 DFSDM pins and internal signals
Table 84. DFSDM external pins
Name Signal Type Remarks
VDD Power supply Digital power supply.
VSS Power supply Digital ground power supply.
CKIN[3:0] Clock input Clock signal provided from external Σ∆ modulator. FT input.
DATIN[3:0] Data input Data signal provided from external Σ∆ modulator. FT input.
CKOUT Clock output
Clock output to provide clock signal into external Σ∆
modulator.
EXTRG[1:0]
External trigger
signal
Input trigger from two EXTI signals to start analog
conversion (from GPIOs: EXTI11, EXTI15).
Table 85. DFSDM internal signals
Name Signal Type Remarks
dfsdm_jtrg[10:0]
Internal/
external trigger
signal
Input trigger from internal/external trigger sources to start
analog conversion, see Table 86 for details.
dfsdm_break[3:0]
break signal
output
Break signals event generation from Analog watchdog or
short-circuit detector
dfsdm_dma[1:0]
DMA request
signal
DMA request signal from each DFSDM_FLTx (x=0..1):
end of injected conversion event.
dfsdm_it[1:0]
Interrupt
request signal
Interrupt signal for each DFSDM_FLTx (x=0..1)
Table 86. DFSDM triggers connection
Trigger name Trigger source
dfsdm_jtrg0 TIM1_TRGO
dfsdm_jtrg1 TIM3_TRGO
dfsdm_jtrg2 TIM8_TRGO
dfsdm_jtrg3 TIM10_OC1
dfsdm_jtrg4 N/A
dfsdm_jtrg5 TIM4_TRGO
dfsdm_jtrg6 N/A
dfsdm_jtrg7 TIM6_TRGO
dfsdm_jtrg8 N/A
dfsdm_jtrg9 EXTI11
dfsdm_jtrg10 EXTI15

ST STM32F412 Specifications

General

Brand	ST
Model	STM32F412
Category	Microcontrollers
Language	English