12.07.2015 Views

Ultralow power ARM-based 32-bit MCU with 384 Kbytes Flash ... - Keil

Ultralow power ARM-based 32-bit MCU with 384 Kbytes Flash ... - Keil

Ultralow power ARM-based 32-bit MCU with 384 Kbytes Flash ... - Keil

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STM<strong>32</strong>L162VD, STM<strong>32</strong>L162ZD, STM<strong>32</strong>L162QD, STM<strong>32</strong>L162RDElectrical characteristicsSPI characteristicsUnless otherwise specified, the parameters given in the following table are derived fromtests performed under ambient temperature, f PCLKx frequency and V DD supply voltageconditions summarized in Table 10.Refer to Section 6.3.12: I/O current injection characteristics for more details on theinput/output alternate function characteristics (NSS, SCK, MOSI, MISO).Table 54. SPI characteristics (1)Symbol Parameter Conditions Min Max (2)Unitf SCK1/t c(SCK)SPI clock frequencyt r(SCK)t f(SCK)DuCy(SCK)SPI clock rise and falltimeSPI slave input clock dutycycleMaster mode 16Slave mode 16MHzCapacitive load: C = 30 pF TBD nsSlave mode 30 70 %t su(NSS) NSS setup time Slave mode 4t PCLKt h(NSS) NSS hold time Slave mode 2t PCLKt w(SCKH)Master mode, fSCK high and low timePCLK = 16 MHz,TBD TBDt w(SCKL)presc = 4t Master mode 5su(MI) Data input setup timet su(SI)Slave mode 5t h(MI)Master mode 5Data input hold timenst h(SI) Slave mode 4t (3)a(SO) Data output access time Slave mode, f PCLK = 20 MHz 0 3t PCLKt dis(SO)(4)t v(SO)(2)Data output disable time Slave mode TBD TBDData output valid time Slave mode (after enable edge) TBDt (2)v(MO) Data output valid time Master mode (after enable edge) TBDt (2)h(SO) Slave mode (after enable edge) TBDData output hold time(2)t h(MO) Master mode (after enable edge) TBD1. Remapped SPI1 characteristics to be determined.2. Based on characterization, not tested in production.3. Min time is for the minimum time to drive the output and max time is for the maximum time to validate thedata.4. Min time is for the minimum time to invalidate the output and max time is for the maximum time to put thedata in Hi-Z.Doc ID 022268 Rev 2 97/124

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