Datasheet

STM32F103xC, STM32F103xD, STM32F103xE Electrical characteristics
Doc ID 14611 Rev 8 101/130
USB characteristics
The USB interface is USB-IF certified (Full Speed).
Table 55. SD / MMC characteristics
Symbol Parameter Conditions Min Max Unit
f
PP
Clock frequency in data transfer
mode
C
L
≤ 30 pF 0 48 MHz
t
W(CKL)
Clock low time, f
PP
= 16 MHz C
L
≤ 30 pF 32
ns
t
W(CKH)
Clock high time, f
PP
= 16 MHz C
L
≤ 30 pF 31
t
r
Clock rise time C
L
≤ 30 pF 3.5
t
f
Clock fall time C
L
≤ 30 pF 5
CMD, D inputs (referenced to CK)
t
ISU
Input setup time C
L
≤ 30 pF 2
ns
t
IH
Input hold time C
L
≤ 30 pF 0
CMD, D outputs (referenced to CK) in MMC and SD HS mode
t
OV
Output valid time C
L
≤ 30 pF 6
ns
t
OH
Output hold time C
L
≤ 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.
t
OVD
Output valid default time C
L
≤ 30 pF 7
ns
t
OHD
Output hold default time C
L
≤ 30 pF 0.5
Table 56. USB startup time
Symbol Parameter Max Unit
t
STARTUP
(1)
1. Guaranteed by design, not tested in production.
USB transceiver startup time 1 µs