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STM32F405 数据表(PDF) 142 Page - STMicroelectronics

部件名 STM32F405
功能描述  Arm® Cortex®-M4 32b MCUFPU, 210DMIPS, up to 1MB Flash/1924KB RAM, USB OTG HS/FS, Ethernet, 17 TIMs, 3 ADCs, 15 comm. interfaces & camera
PDF  204 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STM32F405 数据表(HTML) 142 Page - STMicroelectronics

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Electrical characteristics
STM32F405xx, STM32F407xx
142/203
DS8626 Rev 9
Figure 53. 12-bit buffered /non-buffered DAC
1. The DAC integrates an output buffer that can be used to reduce the output impedance and to drive external
loads directly without the use of an external operational amplifier. The buffer can be bypassed by
configuring the BOFFx bit in the DAC_CR register.
5.3.26
FSMC characteristics
Unless otherwise specified, the parameters given in Table 75 to Table 86 for the FSMC
interface are derived from tests performed under the ambient temperature, fHCLK 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: 0.5VDD
Refer to Section Section 5.3.16: I/O port characteristics for more details on the input/output
characteristics.
Asynchronous waveforms and timings
Figure 54 through Figure 57 represent asynchronous waveforms and Table 75 through
Table 78 provide the corresponding timings. The results shown in these tables are obtained
with the following FSMC configuration:
•
AddressSetupTime = 1
•
AddressHoldTime = 0x1
•
DataSetupTime = 0x1
•
BusTurnAroundDuration = 0x0
In all timing tables, the THCLK is the HCLK clock period.
R L
C L
Buffered/Non-buffered DAC
DAC_OUTx
Buffer(1)
12-bit
digital to
analog
converter
ai17157V3



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