STM32F205XX_12 STMICROELECTRONICS [STMicroelectronics], STM32F205XX_12 Datasheet - Page 142

• Manufacturer Part Number: STM32F205XX_12
• Description: ARM-based 32-bit MCU, 150DMIPs, up to 1 MB Flash/128+4KB RAM
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Electrical characteristics
5.3.28
142/177
Figure 73. SD default mode
Table 83.
1. Refer to SDIO_CLKCR, the SDI clock control register to control the CK output.
RTC characteristics
Table 84.
CMD, D inputs (referenced to CK)
CMD, D outputs (referenced to CK) in MMC and SD HS mode
CMD, D outputs (referenced to CK) in SD default mode
Symbol
t
t
Symbol
W(CKH)
W(CKL)
t
t
t
t
OHD
t
OVD
f
ISU
t
OH
PP
OV
t
t
IH
-
r
f
-
SD / MMC characteristics
RTC characteristics
Clock frequency in data transfer
mode
SDIO_CK/f
Clock low time, f
Clock high time, f
Clock rise time
Clock fall time
Input setup time
Input hold time
Output valid time
Output hold time
Output valid default time
Output hold default time
f
PCLK1
/RTCCLK frequency ratio
D, CMD
(output)
CK
PCLK2
Parameter
Parameter
PP
PP
frequency ratio
= 16 MHz
Doc ID 15818 Rev 9
= 16 MHz
Any read/write operation
from/to an RTC register
t OVD
-
C
C
C
C
C
C
C
C
C
C
C
L
L
L
L
L
L
L
L
L
L
L
Conditions
Conditions
≤ 30 pF
≤ 30 pF
≤ 30 pF
≤ 30 pF
≤ 30 pF
≤ 30 pF
≤ 30 pF
≤ 30 pF
≤ 30 pF
≤ 30 pF
≤ 30 pF
(1)
t OHD
Min
0.3
0.5
32
31
0
2
0
-
Min
4
STM32F20xxx
Max
8/3
3.5
48
5
6
7
Max
-
Unit
MHz
ai14888
ns
ns
ns
ns
-