STM32L476XX Datasheet, PDF (188/232 Pages) STMicroelectronics – Ultra-low-power with FlexPowerControl

Electrical characteristics
STM32L476xx
Table 87. SD / MMC dynamic characteristics, V_DD=2.7 V to 3.6 V⁽¹⁾ (continued)
Symbol
Parameter
Conditions Min Typ Max Unit
CMD, D outputs (referenced to CK) in SD default mode
t_OVD
t_OHD
Output valid default time SD
Output hold default time SD
f_PP = 50 MHz -
4.5 5
ns
f_PP = 50 MHz 0
-
-
ns
1. Guaranteed by characterization results.
Table 88. eMMC dynamic characteristics, V_DD = 1.71 V to 1.9 V⁽¹⁾⁽²⁾
Symbol
Parameter
Conditions Min Typ Max Unit
f_PP
Clock frequency in data transfer mode
-
0
-
SDIO_CK/f_PCLK2 frequency ratio
-
-
t_W(CKL) Clock low time
f_PP = 50 MHz 8
t_W(CKH) Clock high time
f_PP = 50 MHz 8
CMD, D inputs (referenced to CK) in eMMC mode
-
50 MHz
- 4/3 -
10
-
ns
10
-
ns
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
t_OH
Output hold time HS
f_PP = 50 MHz - 13.5 15.5 ns
f_PP = 50 MHz 9
-
-
ns
1. Guaranteed by characterization results.
2. C_LOAD = 20pF.
Figure 35. SDIO high-speed mode
TF
TR
T7#+(
#+
$#-$
OUTPUT
$#-$
INPUT
T#
T/6
T7#+,
T/(
T)35
T)(
AI
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