3.1.5.2 SDIO Controller and SDIO-SPI AC Timing Specifications

Figure 3-1. SDIO Controller and SDIO-SPI AC Timing Diagram

Table 3-9. SDIO Controller AC Timing Specifications
AC Characteristics			Standard Operating Conditions: V_DD = V_DDIO = 3.0V to 3.6V (unless otherwise stated) Operating Temperature: -40°C ≤ T_A ≤ +85°C for Industrial -40°C ≤ T_A ≤ +105°C for V-temp
Param. No.	Symbol	Characteristics	Min.	Typ	Max.	Units	Conditions⁽¹⁾
SD_5	t_SDCK	Clock frequency	0	—	50	MHz
SD_7	t_DUTY	Duty cycle	—	50	—	%	—
SD_9	t_HIGH	Clock high time	8.5	—	—	ns	—
SD_11	t_LOW	Clock low time	8.5	—	—	ns	—
SD_13	t_RISE	Clock rise time	—	—	5	—	—
SD_15	t_FALL	Clock fall time	—	—	5	—	—
SD_17	t_{IN_SETUP}	Input setup time	6	—	—	ns	—
SD_19	t_{IN_HOLD}	Input hold time	1	—	—	ns	—
SD_21	t_{OUT_DLY}	Output delay time	3	—	13	ns	VDDIO = 3.3V, C_LOAD = 15 pF (_Max)
Note: All output pins with 15 pF load The maximum clock frequency specified is limited by the SDIO Host interface internal design; actual maximum clock frequency can be lower and depends on the specific PCB layout.