MCZ33904B5EKR2 Freescale Semiconductor, MCZ33904B5EKR2 Datasheet - Page 52
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MCZ33904B5EKR2
Manufacturer Part Number
MCZ33904B5EKR2
Description
SENSOR ABS PRESS 56.6 PSI MAX
Manufacturer
Freescale Semiconductor
Specifications of MCZ33904B5EKR2
Applications
System Basis Chip
Interface
CAN, LIN
Voltage - Supply
5.5 V ~ 27 V
Package / Case
32-BSSOP Exposed Pad
Mounting Type
Surface Mount
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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VBAT, and internal ECU 5.0 V. Several comparators are
implemented on CANH and CANL lines. These comparators
Table 8. Failure Detection Truth Table
52
33903/4/5
CAN INTERFACE
CAN BUS FAULT DIAGNOSTIC
Failure Description
The device includes diagnostic of bus short-circuit to GND,
The following table indicates the state of the comparators in case of a bus failure, and depending upon the driver state.
CANH to VBAT
CANL to VBAT
CANH to GND
CANL to GND
No failure
No failure
CANH
SPLIT
CANL
connect
Standard termination
No
Lb (threshold V
Lg (threshold 1.75 V)
Figure 35. CAN Bus Simplified Structure Truth Table for Failure Detection
TxD
Diag
120
1
0
0
0
1
1
SUP
Logic
Driver Recessive State
-2.0 V)
Lg
Hg
ECU connector
Figure 34. Bus Termination Options
CAN BUS FAULT DIAGNOSTIC
L5
H5
Hb
Lb
CANH
SPLIT
CANL
Vrg
Vrg
CAN bus
Vrvb
Vr5
Hb (threshold V
Vr5
Vrvb
Hg (threshold 1.75 V)
V
60
60
DD
CANH
1
0
0
0
1
1
CANL
SUP
-2.0 V)
monitor the bus level in the recessive and dominant states.
The information is then managed by a logic circuitry to
properly determine the failure and report it.
CANH dominant level (3.6 V)
CANL dominant level (1.4 V)
CANH
ECU connector
SPLIT
CANL
Lb (threshold V
Recessive level (2.5 V)
CAN bus
Lg (threshold 1.75 V)
V RVB (V SUP -2.0 V)
V R5 (V DD -.43 V)
V BAT (12-14 V)
connect
V RG (1.75 V)
No termination
GND (0.0 V)
No
V DD (5.0 V)
0
0
0
0
1
0
SUP
Analog Integrated Circuit Device Data
Driver Dominant State
-2.0 V)
Freescale Semiconductor
Hb (threshold V
ECU connector
Hg (threshold 1.75 V)
CAN bus
1
1
0
0
1
1
SUP
-2.0 V)
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