Datasheet

DS10198 Rev 8 217/270
STM32L476xx Electrical characteristics
238
Figure 42. SDIO high-speed mode
CMD, D outputs (referenced to CK) in SD default mode
t
OVD
Output valid default time SD f
PP
= 50 MHz - 4.5 5 ns
t
OHD
Output hold default time SD f
PP
= 50 MHz 0 - - ns
1. Guaranteed by characterization results.
Table 101. eMMC dynamic characteristics, V
DD
= 1.71 V to 1.9 V
(1)(2)
1. Guaranteed by characterization results.
2. C
LOAD
= 20pF.
Symbol Parameter Conditions Min Typ Max Unit
f
PP
Clock frequency in data transfer mode - 0 - 50 MHz
- SDIO_CK/f
PCLK2
frequency ratio - - - 4/3 -
t
W(CKL)
Clock low time f
PP
= 50 MHz 8 10 - ns
t
W(CKH)
Clock high time f
PP
= 50 MHz 8 10 - ns
CMD, D inputs (referenced to CK) in eMMC mode
t
ISU
Input setup time HS f
PP
= 50 MHz 0 - - ns
t
IH
Input hold time HS f
PP
= 50 MHz 5 - - ns
CMD, D outputs (referenced to CK) in eMMC mode
t
OV
Output valid time HS f
PP
= 50 MHz - 13.5 15.5 ns
t
OH
Output hold time HS f
PP
= 50 MHz 9 - - ns
Table 100. SD / MMC dynamic characteristics, V
DD
=2.7 V to 3.6 V
(1)
(continued)
Symbol Parameter Conditions Min Typ Max Unit
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