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STM8AF6213 датащи(PDF) 81 Page - STMicroelectronics |
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STM8AF6213 датащи(HTML) 81 Page - STMicroelectronics |
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81 / 106 page ![]() DocID025118 Rev 5 81/106 STM8AF6213/23/23A/26 Electrical characteristics 103 Figure 35. Recommended reset pin protection 9.3.8 SPI serial peripheral interface Unless otherwise specified, the parameters given in Table 52 are derived from tests performed under ambient temperature, fMASTER frequency and VDD supply voltage conditions. tMASTER = 1/fMASTER. Refer to I/O port characteristics for more details on the input/output alternate function characteristics (NSS, SCK, MOSI, MISO). Table 52. SPI characteristics Symbol Parameter Conditions(1) Min Max Unit fSCK 1/tc(SCK) SPI clock frequency Master mode 0 8 MHz Slave mode 0 6 tr(SCK) tf(SCK) SPI clock rise and fall time Capacitive load: C = 30 pF -25 ns tsu(NSS)(2) NSS setup time Slave mode 4 * tMASTER - th(NSS)(2) NSS hold time Slave mode 70 - tw(SCKH)(2) tw(SCKL)(2) SCK high and low time Master mode tSCK/2 - 15 tSCK/2 + 15 tsu(MI)(2) tsu(SI)(2) Data input setup time Master mode 5 - Slave mode 5 - th(MI)(2) th(SI)(2) Data input hold time Master mode 7 - Slave mode 10 - ta(SO)(2)(3) Data output access time Slave mode - 3* tMASTER tdis(SO)(2)(4) Data output disable time Slave mode 25 - tv(SO)(2) Data output valid time Slave mode (after enable edge) -65 tv(MO)(2) Data output valid time Master mode (after enable edge) -36 |
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