Datasheet

Electrical characteristics STM32L496xx
242/272 DS11585 Rev 9
Figure 60. SD default mode
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Table 121. SD / MMC dynamic characteristics, V
DD
=2.7 V to 3.6 V
(1)
Symbol Parameter Conditions Min Typ Max Unit
f
PP
Clock frequency in data transfer mode 0 50 MHz
- SDIO_CK/fPCLK2 frequency ratio - - 4/3 -
t
W(CKL)
Clock low time fpp =50 MHz 8 10 -
ns
t
W(CKH)
Clock high time fpp =50 MHz 8 10 -
CMD, D inputs (referenced to CK) in MMC and SD HS mode
t
ISU
Input setup time HS fpp =50 MHz 2.5 - -
ns
t
IH
Input hold time HS fpp =50 MHz 2.5 - -
CMD, D outputs (referenced to CK) in MMC and SD HS mode
t
OV
Output valid time HS fpp =50 MHz - 12 13
ns
t
OH
Output hold time HS fpp =50 MHz 10 - -
CMD, D inputs (referenced to CK) in SD default mode
tISUD Input setup time SD
fpp =25 MHz 3.5 - -
ns
tIHD Input hold time SD
fpp =25 MHz 3 - -
CMD, D outputs (referenced to CK) in SD default mode
tOVD Output valid default time SD
fpp =25 MHz - 3 5
ns
tOHD Output hold default time SD
fpp =25 MHz 0 - -
1. Guaranteed by characterization results.
Table 122. SD / MMC dynamic characteristics, V
DD
=1.71 V to 1.9 V
(1)
Symbol Parameter Conditions Min Typ Max Unit
f
PP
Clock frequency in data transfer mode - 0 - 50 MHz
- SDIO_CK/fPCLK2 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
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