BTS54040-LBF_15 Datasheet, PDF (55/67 Pages) Infineon Technologies AG – SPI Power Controller

VDD
V_DD(PO)
BTS54040-LBF
Serial Peripheral Interface (SPI)
SI
frame A
frame B
frame C
SO
(SO = „Z“)
Standard Diagnosis
+ TER
response to frame B
Figure 33 BTS54040-LBF response after coming out of Power-On reset at V_DD
SPI _SO_POR.emf
V_S
V_SMON,max
V _{S MON,mi n}
t
VSMON
SI
0
frame A
x
1
x
frame B
0
frame C
t
frame D
SO
(response )
Std. Diag. + TER
+ VSMON
Std. Diag. + TER
+ VSMON
(response to
frame C)
SPI_SO_VSMON.emf
Figure 34 BTS54040-LBF response in case of a negative battery voltage transient
A summary of all possible SPI commands is presented in Table 13, including the answer that BTS54040-LBF will
send back at the next transmission.
Data Sheet
55
Rev. 2.1, 2014-12-05