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STR751FR0H6 Datasheet(PDF) 62 Page - STMicroelectronics |
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STR751FR0H6 Datasheet(HTML) 62 Page - STMicroelectronics |
62 / 84 page Electrical parameters STR750Fxx STR751Fxx STR752Fxx STR755Fxx 62/84 5.3.10 Communication interface characteristics SSP synchronous serial peripheral in master mode (SPI or TI mode) General operating conditions: V33, 3.0V to 3.3V, V18 =1.8V, CL ≈ 45 pF. Table 38. SSP master mode characteristics(1) 1. Data based on characterisation results, not tested in production. Symbol Parameter Conditions Min Max Unit fSCK SPI clock frequency(2) 2. Max frequency for the 2 SSPs is fPCLK/2; fPCLK max = 32 MHz. This takes into account the frequency limitation due to I/O speed capability. SSP0 uses IO4 type while SSP1 uses IO2 type I/Os. SSP0 16 MHz SSP1 8 tr(SCK) SPI clock rise time SSP0 14 ns SSP1 33 tf(SCK) SPI clock fall time SSP0 11 SSP1 30 tw(SCKH) tw(SCKL) SCK high and low time SSP0 19 SSP1 30 tNSSLQV NSS low to Data Output MOSI valid time SSP0 0.5tSCK+15ns SSP1 0.5tSCK+30ns tSCKNSSH SCK last edge to NSS high CPHA = 0 SSP0 0.5tSCK+15ns SSP1 0.5tSCK+30ns CPHA = 1 SSP0 tSCK+15ns SSP1 tSCK+30ns tSCKQV SCK trigger edge to data output MOSI valid time SSP0 15 SSP1 30 tSCKQX SCK trigger edge to data output MOSI invalid time SSP0 0 SSP1 0 tsu Data input (MISO) setup time w.r.t SCK sampling edge SSP0 25 SSP1 25 th Data input (MISO) hold time w.r.t SCK sampling edge SSP0 0 SSP1 0 |
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