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STM32F102RBT6 Datasheet(PDF) 59 Page - STMicroelectronics |
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STM32F102RBT6 Datasheet(HTML) 59 Page - STMicroelectronics |
59 / 76 page STM32F102x8, STM32F102xB Electrical characteristics Doc ID 15056 Rev 4 59/76 SPI interface characteristics Unless otherwise specified, the parameters given in Table 41 are derived from tests performed under ambient temperature, fPCLKx frequency and VDD supply voltage conditions summarized in Table 8. Refer to Section 5.3.13: I/O port characteristics for more details on the input/output alternate function characteristics (NSS, SCK, MOSI, MISO). Table 41. SPI characteristics Symbol Parameter Conditions Min Max Unit fSCK 1/tc(SCK) SPI clock frequency Master mode 18 MHz Slave mode 18 tr(SCK) tf(SCK) SPI clock rise and fall time Capacitive load: C = 30 pF 8 ns DuCy(SCK) SPI slave input clock duty cycle Slave mode 30 70 % tsu(NSS) (1) 1. Based on characterization, not tested in production. NSS setup time Slave mode 4tPCLK ns th(NSS) (1) NSS hold time Slave mode 2tPCLK tw(SCKH) (1) tw(SCKL) (1) SCK high and low time Master mode, fPCLK = 36 MHz, presc = 4 50 60 tsu(MI) (1) tsu(SI) (1) Data input setup time Master mode 5 Slave mode 5 th(MI) (1) Data input hold time Master mode 5 th(SI) (1) Slave mode 4 ta(SO) (1)(2) 2. Min time is for the minimum time to drive the output and the max time is for the maximum time to validate the data. Data output access time Slave mode, fPCLK = 20 MHz 0 3tPCLK tdis(SO) (1)(3) 3. Min time is for the minimum time to invalidate the output and the max time is for the maximum time to put the data in Hi-Z Data output disable time Slave mode 2 10 tv(SO) (1) Data output valid time Slave mode (after enable edge) 25 tv(MO) (1) Data output valid time Master mode (after enable edge) 5 th(SO) (1) Data output hold time Slave mode (after enable edge) 15 th(MO) (1) Master mode (after enable edge) 2 |
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