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STM32F103xC 数据表(PDF) 96 Page - STMicroelectronics |
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STM32F103xC 数据表(HTML) 96 Page - STMicroelectronics |
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96 / 123 page ![]() Electrical characteristics STM32F103xC, STM32F103xD, STM32F103xE 96/123 Doc ID 14611 Rev 7 USB characteristics The USB interface is USB-IF certified (Full Speed). Table 54. SD / MMC characteristics Symbol Parameter Conditions Min Max Unit fPP Clock frequency in data transfer mode CL 30 pF 0 48 MHz tW(CKL) Clock low time, fPP = 16 MHz CL 30 pF 32 ns tW(CKH) Clock high time, fPP = 16 MHz CL 30 pF 31 tr Clock rise time CL 30 pF 3.5 tf Clock fall time CL 30 pF 5 CMD, D inputs (referenced to CK) tISU Input setup time CL 30 pF 2 ns tIH Input hold time CL 30 pF 0 CMD, D outputs (referenced to CK) in MMC and SD HS mode tOV Output valid time CL 30 pF 6 ns tOH Output hold time CL 30 pF 0.3 CMD, D outputs (referenced to CK) in SD default mode(1) 1. Refer to SDIO_CLKCR, the SDI clock control register to control the CK output. tOVD Output valid default time CL 30 pF 7 ns tOHD Output hold default time CL 30 pF 0.5 Table 55. USB startup time Symbol Parameter Max Unit tSTARTUP (1) 1. Guaranteed by design, not tested in production. USB transceiver startup time 1 µs |
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