Datasheet

Electrical characteristics STM32F411xC STM32F411xE
122/149 DocID026289 Rev 6
Table 76. Dynamic characteristics: SD / MMC characteristics
(1)(2)
Symbol Parameter Conditions Min Typ Max Unit
f
PP
Clock frequency in data transfer
mode
-0-50MHz
- SDIO_CK/fPCLK2 frequency ratio - - - 8/3 -
t
W(CKL)
Clock low time fpp = 50 MHz 10.5 11 -
ns
t
W(CKH)
Clock high time fpp = 50 MHz 8.5 9 -
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
-40°C<T
A
< 125°C
5--
fpp = 50 MHz
-40°C<T
A
<+85°C
2.5 - -
CMD, D outputs (referenced to CK) in MMC and SD HS mode
t
OV
Output valid time HS fpp = 50 MHz - 3.5 4
ns
t
OH
Output hold time HS fpp = 50 MHz 2 - -
CMD, D inputs (referenced to CK) in SD default mode
t
ISUD
Input setup time SD fpp = 25 MHz 3 - -
ns
t
IHD
Input hold time SD fpp = 25 MHz 4 - -
CMD, D outputs (referenced to CK) in SD default mode
t
OVD
Output valid default time SD fpp =25 MHz - 5 5.5
ns
t
OHD
Output hold default time SD fpp =25 MHz 4.5 - -
1. Guaranteed by characterization results.
2. V
DD
= 2.7 to 3.6 V.
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