Electrical characteristics
STM32L151x6/8/B, STM32L152x6/8/B
Figure 23. SPI timing diagram - master mode(1)
High
NSS input
CPHA= 0
CPOL=0
CPHA= 0
CPOL=1
tc(SCK)
CPHA=1
CPOL=0
CPHA=1
CPOL=1
MISO
INP UT
tsu(MI)
MOSI
OUTPU T
tw(SCKH)
tw(SCKL)
MS BIN
th(MI)
M SB OUT
tv(MO)
BI T6 IN
B I T1 OUT
th(MO)
1. Measurement points are done at CMOS levels: 0.3VDD and 0.7VDD.
USB characteristics
The USB interface is USB-IF certified (full speed).
Table 50. USB startup time
Symbol
Parameter
tSTARTUP(1)
USB transceiver startup time
1. Guaranteed by design, not tested in production.
tr(SCK)
tf(SCK)
LSB IN
LSB OUT
ai14136
Max
Unit
1
µs
88/121
Doc ID 17659 Rev 8