参数资料
型号: STM32F205REY6XXX
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 32-BIT, FLASH, 120 MHz, RISC MICROCONTROLLER, PBGA66
封装: 0.40 MM PITCH, ROHS COMPLIANT, WLCSP-66
文件页数: 43/163页
文件大小: 2275K
代理商: STM32F205REY6XXX
STM32F205xx, STM32F207xx
Electrical characteristics
Doc ID 15818 Rev 7
137/163
Figure 73.
SD default mode
5.3.28
RTC characteristics
Table 78.
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
CK
D, CMD
(output)
tOVD
tOHD
ai14888
Table 79.
RTC characteristics
Symbol
Parameter
Conditions
Min
Max
Unit
-
fPCLK1/RTCCLK frequency
ratio
Any read/write
operation from/to an
RTC register
4-
-
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