TLE6288R_10 Datasheet, PDF (17/32 Pages) Infineon Technologies AG – Smart 6 Channel Peak & Hold Switch

TLE6288R
SPI
Electrical Characteristics: SPI Timing (cont’d)
V_CC = 4.5 V to 5.5 V, T_j = -40 ⋅C to +150 ⋅C, V_B = 6 V to 16 V, Reset = H, V_DO = V_CC, all voltages with respect to
ground, positive current flowing into pin (unless otherwise specified)
Pos. Parameter
Symbol
Limit Values
Unit Pin/
Conditions
Min. Typ. Max.
Comment
5.2.10 Transfer Delay Time²⁾
t_dt
200 –
–
ns –
–
(CS high time between two
accesses)
5.2.11 Data Valid Time¹⁾
t_valid
ns –
–
C_L = 50 pF to 100 pF
–
–
120
C_L = 220 pF
–
–
150
1) Not subject to production test, specified by design.
2) To get the correct diagnostic information, the transfer delay time has to be extended to the maximum fault filter time
t_f(fault)max = 200 μs.
5.3
SPI Diagnostics
As soon as a fault occurs for longer than the fault filter time, the fault information is latched into the diagnosis
register (and the Fault pin will change from high to low state). A new error on the same channel will overwrite the
old error report. Serial data out pin (SO) is in a high impedance state when CS is high. If CS receives a LOW signal,
all diagnosis bits can be shifted out serially. If the sent command was valid (see Note in Chapter 5.5) the rising
edge of CS will reset the diagnosis registers (except the channel OT flag) and restart the fault filter time. In case
of an invalid command the device will ignore the data bits and the diagnosis register will not be reset at the rising
CS edge.
Diagnostic Serial Data Out SO
MSB
15 14 13 12 11 10 9 8 7 6
Bit0 and Bit1
is always 1
5 4 32
Ch.6 Ch.5
Ch.4
Ch.3 Ch.2 Ch.1
Channel Overtem-
perature Flag
10
LSB
IC Overtem-
perature Flag
HH
Normal function
HL
Overload, Shorted Load or Overtemperature
LH
Open Load
LL
Switch Bypassed
Figure 9 Two Bits per Channel Diagnostic Feedback plus two Overtemperature Flags
For Full Diagnosis there are two diagnostic bits per channel configured as shown in Figure 9.
Diagnosis bit 0 and bit 1 are always set to 1.
Data Sheet
17
Rev. 2.5, 2010-10-11