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M451
May. 4, 2018
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Rev.2.08
M4
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Digital to Analog Converter (DAC)
6.23
6.23.1 Overview
The DAC module is a 12-bit, voltage output digital-to-analog converter. It can be used in
conjunction with the PDMA controller. The DAC integrates a voltage output buffer that can be
used to reduce output impendence and drive external loads directly without having to add an
external operational amplifier.
6.23.2 Features
Analog output voltage range: 0~AV
DD
.
Reference voltage from internal reference voltage (INT_VREF), V
REF
pin.
DAC maximum conversion updating rate 1M sps.
Supports voltage output buffer mode and bypass voltage output buffer mode.
Supports software and hardware trigger to start DAC conversion.
Supports PDMA request.
6.23.3 Block Diagram
TIMER0_TRIG
TIMER3_TRIG
SWTRIG
TIMER1_TRIG
TIMER2_TRIG
PWM0_TRIG
PWM1_TRIG
Control Logic
DAC_DOR
DAC_DHR
DMA Request
DMAEN
TRIGSEL[2:0]
V
REF
DAC_CR
12 bit
12 bit
BUF_BYPASS
000
001
010
011
100
101
110
111
Event Detect
Logic
DAC_TCR
DAC_OUT
V
REF
STDAC
Internal Reference
Voltage Generator
INT_VREF
EN
Digital to Analog
Converter
DACEN
VOUT
DIN
Trigger Event
12 bit
Voltage
Buffer
REN
(SYS_VREFCTL[1])
BGEN
(SYS_VREFCTL[0])
Figure 6.23-1 Digital-to-Analog Converter Block Diagram
Содержание ARM Cortex NuMicro M451 Series
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Страница 324: ...M451 May 4 2018 Page 324 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL Figure 6 4 18 Checksum Calculation Flow...
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Страница 625: ...M451 May 4 2018 Page 625 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL 00 5 bits 01 6 bits 10 7 bits 11 8 bits...
Страница 721: ...M451 May 4 2018 Page 721 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL the SCL line 1 0 Reserved Reserved...
Страница 1001: ...M451 May 4 2018 Page 1001 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL LQFP 64L 10x10x1 4 mm footprint 2 0 mm 9 2...
Страница 1002: ...M451 May 4 2018 Page 1002 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL LQFP 64L 7x7x1 4 mm footprint 2 0 mm 9 3...
Страница 1003: ...M451 May 4 2018 Page 1003 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL LQFP 48L 7x7x1 4mm footprint 2 0mm 9 4...