Datasheet

DS9716 Rev 11 113/139
STM32F401xB STM32F401xC Electrical characteristics
113
6.3.25 RTC characteristics
CMD, D inputs (referenced to CK) in SD default mode
t
ISUD
Input setup time SD fpp = 24MHz 1.5 - -
ns
t
IHD
Input hold time SD fpp = 24MHz 0.5 - -
CMD, D outputs (referenced to CK) in SD default mode
t
OVD
Output valid default time SD fpp =24MHz - 4.5 6.5
ns
t
OHD
Output hold default time SD fpp =24MHz 3.5 - -
1. Guaranteed by characterization results.
2. V
DD
= 2.7 to 3.6 V.
Table 77. Dynamic characteristics: SD / MMC characteristics
(1)(2)
(continued)
Symbol Parameter Conditions Min Typ Max Unit
Table 78. RTC characteristics
Symbol Parameter Conditions Min Max
-f
PCLK1
/RTCCLK frequency ratio
Any read/write operation
from/to an RTC register
4-
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