MC34912BAC Freescale, MC34912BAC Datasheet - Page 36

• Manufacturer Part Number: MC34912BAC
• Manufacturer: Freescale

Specifications of MC34912BAC

• Turn Off Delay Time: 10us
• Number Of Drivers: 4
• Operating Temperature (min): -40C
• Lead Free Status / RoHS Status: Compliant

LIN Pin
external disturbance, guaranteeing communication during
external disturbance.
Slew Rate Selection
10.4 and 20 kBit/s as well as a fast baud rate for test and
programming. The slew rate can be adapted with the bits
LSR1:0 in the LIN Control Register (LINCR). The initial slew
rate is optimized for 20 kBit/s.
J2602 Conformance
J2602 feature has to be enabled in the LINCR Register (bit
DIS_J2602 sets to 0). The LIN transmitter is disabled in case
of a V
Recessive State: the LIN bus goes in Recessive State and
RXD goes high. The LIN transmitter is not disabled if TXD is
in Dominant State. A deglitcher on Vsup (t
implemented to avoid false switching.
disabled and the communication TXD-LIN-RXD works for
36
33912
FUNCTIONAL DEVICE OPERATIONS
OPERATIONAL MODES
The LIN pin offers a high susceptibility immunity level from
The slew rate can be selected for optimized operation at
To be compliant with the SAE J2602-2 specification, the
If the (DIS_J2602) bit is set to 1, the J2602 feature is
SUP
under-voltage condition occurs and TXD is in
RXSHORT
RXONLY
MOD1:2
TXDOM
LSR0:1
RXD
LINOT
TXD
J2602
Over-temperature Shutdown (interrupt maskable)
J2602_DEG
WAKE-UP
Slope and Slew Rate Control
FILTER
Figure 19. LIN Interface
) is
LIN DRIVER
LIN
Wake-up
SLOPE
CONTROL
RECEIVER
V
communication is interrupted.
Over-temperature Shutdown (LIN Interrupt)
temperature conditions. In case of an over-temperature
condition, the transmitter will be shut down and the LINOT bit
in the LIN Status Register (LINSR) is set.
an Interrupt IRQ will be generated.
condition is gone and TXD is high.
RXD Short-circuit Detection (LIN Interrupt)
RXD output pin. If the device transmits and in case of a short-
SUP
WAKE-UP
The (DIS_J2602) bit is set per default to 0.
The output low side FET is protected against over-
If the LINM bit is set in the Interrupt Mask Register (IMR),
The transmitter is automatically re-enabled once the
The LIN transceiver has a short-circuit detection for the
MODULE
down to 4.6 V (typical value) and then the
LGND
VS1
Analog Integrated Circuit Device Data
30 K
Freescale Semiconductor
LIN