TJA1054T/S900M,512 NXP Semiconductors, TJA1054T/S900M,512 Datasheet - Page 7

• Manufacturer Part Number: TJA1054T/S900M,512
• Description: Network Controller & Processor ICs FAULT TOLERANT CAN TRANSCEIVER
• Manufacturer: NXP Semiconductors

Specifications of TJA1054T/S900M,512

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935287978512

NXP Semiconductors
TJA1054
Product data sheet
7.2 Low power modes
The transceiver provides three low power modes which can be entered and exited via
The sleep mode is the mode with the lowest power consumption. Pin INH is switched to
HIGH-impedance for deactivation of the external voltage regulator. Pin CANL is biased to
the battery voltage via pin RTL. If the supply voltage is provided, pins RXD and ERR will
signal the wake-up interrupt.
The standby mode operates in the same way as the sleep mode but with a HIGH level on
pin INH.
The power-on standby mode is the same as the standby mode, however, in this mode the
battery power-on flag is shown on pin ERR instead of the wake-up interrupt signal. The
output on pin RXD will show the wake-up interrupt. This mode is only for reading out the
power-on flag.
Table 5.
[1]
[2]
[3]
[4]
[5]
Wake-up requests are recognized by the transceiver through two possible channels:
In order to wake-up the transceiver remotely through the bus lines, a filter mechanism is
integrated. This mechanism makes sure that noise and any present bus failure conditions
do not result into an erroneous wake-up. Because of this mechanism it is not sufficient to
simply pull the CANH or CANL bus lines to a dominant level for a certain time. To
guarantee a successful remote wake-up under all conditions, a message frame with a
dominant phase of at least the maximum specified t
Mode
Goto-sleep
command
Sleep
Standby
Power-on
standby
Normal
operating
STB and EN (see
•
•
If the supply voltage V
Wake-up interrupts are released when entering normal operating mode.
A local or remote wake-up event will be signalled at the transceiver pins RXD and ERR if
V
In case the goto-sleep command was used before. When V
the fail-safe functionality this does not effect the internal functions.
V
The bus lines for remote wake-up
Pin WAKE for local wake-up
BAT
BAT
= 5.3 V to 27 V.
power-on flag will be reset when entering normal operating mode.
Normal operating and low power modes
Pin STB
LOW
LOW
LOW
HIGH
HIGH
All information provided in this document is subject to legal disclaimers.
Table 5
CC
Pin EN
HIGH
LOW
LOW
LOW
HIGH
Rev. 4 — 3 August 2010
is present
and
[4]
Figure
Pin ERR
LOW
wake-up
interrupt
signal
V
power-on
flag
error flag
BAT
[1][5]
[1][2][3]
3).
HIGH
no error
flag
CC
(CANH)
drops, pin EN will become LOW, but due to
Pin RXD
LOW
wake-up
interrupt
signal
wake-up
interrupt
signal
dominant
received
data
Fault-tolerant CAN transceiver
or t
[1][2][3]
[1][2][3]
(CANL)
HIGH
recessive
received
data
in it is required.
TJA1054
© NXP B.V. 2010. All rights reserved.
Pin RTL
switched
to
V
V
V
BAT
BAT
CC
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