54.14.3 QSPI Characteristics

Figure 54-10. QSPI SDR Host Mode 0
Figure 54-11. QSPI SDR Host Mode 1
Figure 54-12. QSPI SDR Host Mode 2
Figure 54-13. QSPI SDR Host Mode 3
Figure 54-14. QSPI DDR Mode 0 READ
Figure 54-15. QSPI DDR Mode 0 WRITE
Table 54-57. QSPI Timing Characteristics (see Note 1)
NameDescriptionModeVDD = 1.8VVDD = 3.3VUnits
Min.Typ.Max.Min.Typ.Max.
fSDR_m0_m2QSPI SDR FrequencyHost SDR Mode 0/2- - 50.0- - 75MHz
fSDR_m1_m3QSPI SDR FrequencyHost SDR Mode 1/3- - 50.0- -50
fDDRQSPI DDR FrequencyHost mode- - 37.5- - 66
tSDR_QSPI0Input Setup TimeHost SDR mode 03.86 - -3.85 - -ns
tSDR_QSPI1Input Hold TimeHost SDR mode 00.00 - -0.19 - -
tSDR_QSPI2Data Out Valid TimeHost SDR mode 0 - -3.33 - -2.67
tSDR_QSPI3Input Setup TimeHost SDR mode 13.79 - -3.59 - -ns
tSDR_QSPI4Input Hold TimeHost SDR mode 10.06 - -0.19 - -
tSDR_QSPI5Data Out Valid TimeHost SDR mode 1 - -2.71 - -2.71
tSDR_QSPI6Input Setup TimeHost SDR mode 23.79 - -3.58 - -ns
tSDR_QSPI7Input Hold TimeHost SDR mode 20.06 - -0.19 - -
tSDR_QSPI8Data Out Valid TimeHost SDR mode 2 - -2.74 - -2.65
tSDR_QSPI9Input Setup TimeHost SDR mode 33.86 - -3.86 - -ns
tSDR_QSPI10Input Hold TimeHost SDR mode 3-0.10 - -0.19 - -
tSDR_QSPI11Data Out Valid TimeHost SDR mode 3 - -3.22 - -2.60
tDDR_QSPI0fInput Setup TimeHost DDR mode 0 fall edge3.87 - -3.85 - -ns
tDDR_QSPI1fInput Hold TimeHost DDR mode 0 fall edge0.00 - -0.19 - -
tDDR_QSPI2fData Out Valid TimeHost DDR mode 0 fall edge - -2.1 - -2.03
tDDR_QSPI0rInput Setup TimeHost DDR mode 0 rise edge3.81 - -3.57 - -
tDDR_QSPI1rInput Hold TimeHost DDR mode 0 rise edge0.06 - -0.19 - -
tDDR_QSPI2rData Out Valid TimeHost DDR mode 0 rise edge - -3.13 - -2.12
Note:
  1. These values are based on simulation. They are not covered by production test limits or characterization.
  2. All timing characteristics are given for 20pF capacitive load.
Table 54-58. QSPI Maximum Frequency examples(1)
QSPI ModeCLK_QSPI2X _AHBCLK_QSPI _AHBMax. CPU_CLKMax. QSPI SpeedConditions
SDRX120 MHz120 MHz60 MHz(2)BAUD -> BAUD[7:0] must be greater than 0 to ensure QSPI clock frequency is as per electrical specifications provided in table 54-57.
X75 MHz75 MHz75 MHz-
DDR132 MHz66 MHz66 MHz66 MHz-
Note:
  1. Examples shown do not supersede the electrical specifications shown in Table 54-57. QSPI Timing Characteristics.
  2. CPU clock frequency(CPU_CLK) should always be multiple of SQI frequency (CLK_QSPI_AHB).