MCBSTM32EXL Keil, MCBSTM32EXL Datasheet - Page 243
MCBSTM32EXL
Manufacturer Part Number
MCBSTM32EXL
Description
BOARD EVALUATION FOR STM32F103ZE
Manufacturer
Keil
Specifications of MCBSTM32EXL
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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RM0008
12.4.8
12.4.9
12.4.10
Simultaneous trigger with same LFSR generation
To configure the DAC in this conversion mode, the following sequence is required:
●
●
●
●
When a trigger arrives, the LFSR1 counter, with the same mask, is added to the DHR1
register and the sum is transferred into DAC_DOR1 (three APB1 clock cycles later). The
LFSR1 counter is then updated. At the same time, the LFSR2 counter, with the same mask,
is added to the DHR2 register and the sum is transferred into DAC_DOR2 (three APB1 clock
cycles later). The LFSR2 counter is then updated.
Simultaneous trigger with different LFSR generation
To configure the DAC in this conversion mode, the following sequence is required:
●
●
●
●
When a trigger arrives, the LFSR1 counter, with the mask configured by MAMP1[3:0], is
added to the DHR1 register and the sum is transferred into DAC_DOR1 (three APB1 clock
cycles later). The LFSR1 counter is then updated.
At the same time, the LFSR2 counter, with the mask configured by MAMP2[3:0], is added to
the DHR2 register and the sum is transferred into DAC_DOR2 (three APB1 clock cycles
later). The LFSR2 counter is then updated.
Simultaneous trigger with same triangle generation
To configure the DAC in this conversion mode, the following sequence is required:
●
●
●
●
When a trigger arrives, the DAC channel1 triangle counter, with the same triangle amplitude,
is added to the DHR1 register and the sum is transferred into DAC_DOR1 (three APB1 clock
cycles later). The DAC channel1 triangle counter is then updated.
At the same time, the DAC channel2 triangle counter, with the same triangle amplitude, is
Set the two DAC channel trigger enable bits TEN1 and TEN2
Configure the same trigger source for both DAC channels by setting the same value in
the TSEL1[2:0] and TSEL2[2:0] bits
Configure the two DAC channel WAVEx[1:0] bits as “01” and the same LFSR mask
value in the MAMPx[3:0] bits
Load the dual DAC channel data to the desired DHR register (DHR12RD, DHR12LD or
DHR8RD)
Set the two DAC channel trigger enable bits TEN1 and TEN2
Configure the same trigger source for both DAC channels by setting the same value in
the TSEL1[2:0] and TSEL2[2:0] bits
Configure the two DAC channel WAVEx[1:0] bits as “01” and set different LFSR masks
values using the MAMP1[3:0] and MAMP2[3:0] bits
Load the dual DAC channel data into the desired DHR register (DAC_DHR12RD,
DAC_DHR12LD or DAC_DHR8RD)
Set the two DAC channel trigger enable bits TEN1 and TEN2
Configure the same trigger source for both DAC channels by setting the same value in
the TSEL1[2:0] and TSEL2[2:0] bits
Configure the two DAC channel WAVEx[1:0] bits as “1x” and the same maximum
amplitude value using the MAMPx[3:0] bits
Load the dual DAC channel data into the desired DHR register (DAC_DHR12RD,
DAC_DHR12LD or DAC_DHR8RD)
Doc ID 13902 Rev 9
Digital-to-analog converter (DAC)
243/995
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