TLE 8264-2E Infineon Technologies, TLE 8264-2E Datasheet - Page 68
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TLE 8264-2E
Manufacturer Part Number
TLE 8264-2E
Description
Manufacturer
Infineon Technologies
Datasheet
1.TLE_8264-2E.pdf
(94 pages)
Specifications of TLE 8264-2E
Packages
PG-DSO-36
Transceiver
High Speed CAN ISO 11898 - 5 / 3 x LIN2.0 / J2602
Voltage Regulator Output
2 x 200 mA + 400 mA
Watchdog
Standard and Window Watchdog
Quiescent Current (max.)
28 ?A (typ) Sleep Mode (5V on)
Standby Current
58 ?A (typ) Stop Mode (5V on)
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13.3
The reason to activate the Limp Home pins and the consequences are listed in
Table 12
SBC Mode
INIT Mode
Normal Mode
Stop Mode
Sleep Mode
Restart Mode
Fail-Safe Mode
SW Flash Mode
Table 13
SBC Mode
INIT Mode
Normal Mode
Restart Mode
Any mode
13.4
When Limp Home is activated via SPI command, then it is released via SPI command. This is useful for diagnosis
purpose for example.
Otherwise, the Limp Home outputs are released only in SBC Normal Mode with the following conditions: After the
device has been set to SBC Restart Mode, automatically entering SBC Normal Mode, a successful Watchdog
trigger must be sent via SPI. At this point, the Limp Home outputs remain active. Then the microcontroller needs
to send by SPI command the deactivation of the Limp Home.
13.5
A
1) the
2)
3) the condition is valid longer then the
A
(for
Figure 34
Data Sheet
V
V
V
cc1µC
cc1µC
V
S
s
is higher then the threshold (
V
>
cc1µC
undervoltage time-out condition is given, when
undervoltage time-out will sent the device into Fail-Safe Mode. Limp Home output stag will be activated
V
LHUV
gives an example of the Limp Home output activation, due to a
Activation of the Limp Home Outputs
Limp Home, Function of the SBC Mode
Automatic Activation of Limp Home Output
Release of the Limp Home Outputs
V
output voltage is below the reset threshold (
cc1µC
)
Limp Home Outputs
OFF
OFF
Unchanged
Unchanged
Unchanged
ON
Unchanged
undervoltage time-out
Reason
INIT time-out (t
1st Watchdog failure (config 1/2)
2nd Watchdog failure (config 3/4)
Reset output permanent short circuit to V
Reset output permanent short circuit to GND
V
If previously turned ON in SBC Normal Mode, via SPI command
V
cc1µC
cc1µC
ON via SPI
V
undervoltage time-out
thermal shutdown
SthUV1
V
cc1µC
,
V
INITTO
SthUV2
under voltage time-out (
)
,
V
SthUV3
68
V
) and
RT1
,
V
ON if it was ON until the successful Watchdog
setting and deactivation via SPI.
RT2
,
V
RT3
t
cc1µC
Vcc1UVTO
),
V
cc1µC
).
Table 12
undervoltage time-out.
and
Rev. 1.0, 2009-03-31
Table
TLE8264-2E
Limp Home
13.
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