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STM32F205RFT6 Datasheet(PDF) 151 Page - STMicroelectronics

Part # STM32F205RFT6
Description  ARM®-based 32-bit MCU, 150DMIPs, up to 1 MB Flash/1284KB RAM, USB OTG HS/FS, Ethernet, 17 TIMs, 3 ADCs, 15 comm. interfaces & camera
PDF  184 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32F205RFT6 Datasheet(HTML) 151 Page - STMicroelectronics

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DocID15818 Rev 15
151/184
STM32F20xxx
Electrical characteristics
183
Figure 76. SD default mode
6.3.28
RTC characteristics
Table 85. SD/MMC characteristics
Symbol
Parameter
Conditions
Min
Max
Unit
fPP
Clock frequency in data transfer
mode
CL ≤ 30 pF
0
48
MHz
-
SDIO_CK/fPCLK2 frequency ratio
-
-
8/3
-
tW(CKL)
Clock low time, fPP = 16 MHz
CL ≤ 30 pF
32
-
ns
tW(CKH)
Clock high time, fPP = 16 MHz
CL ≤ 30 pF
31
-
tr
Clock rise time
CL ≤ 30 pF
-
3.5
tf
Clock fall time
CL ≤ 30 pF
-
5
CMD, D inputs (referenced to CK)
tISU
Input setup time
CL ≤ 30 pF
2
-
ns
tIH
Input hold time
CL ≤ 30 pF
0
-
CMD, D outputs (referenced to CK) in MMC and SD HS mode
tOV
Output valid time
CL ≤ 30 pF
-
6
ns
tOH
Output hold time
CL ≤ 30 pF
0.3
-
CMD, D outputs (referenced to CK) in SD default mode(1)
1. Refer to SDIO_CLKCR, the SDI clock control register to control the CK output.
tOVD
Output valid default time
CL ≤ 30 pF
-
7
ns
tOHD
Output hold default time
CL ≤ 30 pF
0.5
-
Table 86. RTC characteristics
Symbol
Parameter
Conditions
Min
Max
-fPCLK1/RTCCLK frequency ratio
Any read/write operation
from/to an RTC register
4-



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