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STM32L552VCU6PXXX bảng dữ liệu(PDF) 277 Page - STMicroelectronics |
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STM32L552VCU6PXXX bảng dữ liệu(HTML) 277 Page - STMicroelectronics |
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277 / 340 page ![]() DS12737 Rev 6 277/340 STM32L552xx Electrical characteristics 307 Figure 52. SAI slave timing waveforms CAN (controller area network) interface Refer to Section 5.3.15: I/O port characteristics for more details on the input/output alternate function characteristics (FDCAN_TX and FDCAN_RX). USART characteristics Unless otherwise specified, the parameters given in Table 131 for USART are derived from tests performed under the ambient temperature, fPCLKx frequency and VDD supply voltage conditions summarized in Table 27: General operating conditions, with the following configuration: • Output speed is set to OSPEEDRy[1:0] = 11 • Capacitive load C=30pF • Measurement points are done at CMOS levels: 0.5VDD Refer to Section 5.3.15: I/O port characteristics for more details on the input/output alternate function characteristics (NSS, CK, TX, RX for USART). MS32772V1 SAI_SCK_X SAI_FS_X (input) SAI_SD_X (transmit) tsu(FS) Slot n SAI_SD_X (receive) tw(CKH_X) th(FS) Slot n+2 tv(SD_ST) th(SD_ST) Slot n tsu(SD_SR) tw(CKL_X) th(SD_SR) 1/fSCK Table 131. USART characteristics(1) Symbol Parameter Conditions Min Typ Max Unit fSCK SPI clock frequency Master mode 1.71<VDD<3.6 -- 13 MHz Slave receiver mode 1.71<VDD<3.6 -- 36 Slave mode transmitter 2.7<VDD<3.6 -- 19 Slave mode transmitter 1.71<VDD<3.6 -- 26 |
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