MCZ33905S5EK Freescale Semiconductor, MCZ33905S5EK Datasheet - Page 52

• Manufacturer Part Number: MCZ33905S5EK
• Description: IC SYSTEM BASIS CHIP GEN2 32SOIC
• Manufacturer: Freescale Semiconductor

Specifications of MCZ33905S5EK

• Applications: System Basis Chip
• Interface: CAN, LIN
• Voltage - Supply: 5.5 V ~ 27 V
• Package / Case: 32-SOIC (7.5mm Width) Exposed Pad, 32-eSOIC, 32-HSOIC
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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)