Freescale SMeCm33i3c89onductor, Inc.
APPLICATION
Figure 60. Typical Application Schematic 1
Auxillary 5V
Vdd
C5
C6
V2
V1
Vbat
V3
C1
C2
Ignition
Auxillary 12V
C3
C4
Reset
INT
reset
int
Rp0
Rs0
CL0
L0
L1
L2
S0
S1
CSB
MISO
MOSI
SCK
SPI
Rtl
CANH
CANL
Rp1
Rp2
RH
Rs1
CL1
Tx
Rx
RL
CAN
Rth
Gnd
Gnd
Rs2
CL2
C1: 22uF
RH> 500 ohms
RL> 500 ohms
S2
C2: 100nF
C3: 22uF esr <10 ohms
C4: 100nF
Rp0,1,2: 22k
Rs0,1,2: 22 k
CL0,1,2: 10nF
CAN bus
C5: 22uF esr < 10 ohms
C6: 100nF
(V3 supplies switch pull up resistors. Sleep mode with cyclic sense).
Figure 61. Typical Application: V3 used as auxilaary ECU supply - Reset Duration Extension
Vbat
C1
C2
Ignition
switch
V3
Rp0
Rp1
Rs0
CL0
L0
L1
L2
V1
Vdd
S0
S1
Micro
C3
C4
MC33389
Gnd
Reset
reset
Rs1
CL1
Cr
Auxillary local 12V
(V3 supplies local switch 12V.
Switch pull up resistors supplied
from Switch battery line.
Reset duration extension
Rp2
Rs2
CL2
Sleep mode without cyclic sense).
S2
Figure 62. Typical Application Schematic
Auxillary 5V
Vdd
C5
C6
V2
Vbat
C1
C2
V1
Ignition
S0
V3
Auxillary 12V
Reset
INT
reset
int
Rp0
Rs0
CL0
L0
L1
L2
CSB
MISO
MOSI
SCK
SPI bus
SPI
Rtl
CANH
CANL
RH
RL
CAN bus # 1
Tx
Rx
CAN 1
CAN 2
SCI
Rth
Gnd
(Wake up input linked to pe-
ripheral circuits: (ex: low speed
CAN or LIN transceivers).
Inh
Vbat
Rtl
Vdd
RH
CAN bus # 2
CANH
CANL
Tx/Rx
MC33388
RL
Gnd
Rth
Gnd
+12V
1k
Inh
Vsup
Tx/Rx
MC33399
Gnd
LIN bus
LIN
For More Information On This Product,
MC33389
MOTOROLA
32
Go to: www.freescale.com
MOTOROLA [ MOTOROLA ]
