PIN CONNECTIONS
TX
V1
RX
RST
INT
GND
GND
GND
GND
MISO
MOSI
SCLK
CS
L2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V3
VBAT
RTL
V2
CANH
GND
GND
GND
GND
CANL
RTH
NC
L0
L1
Table 2. 33389 Pin Definitions: SOICW 28-Lead
A functional description of each pin can be found in the Functional Pin Description section beginning on
Pin Number
1
2
3
4
5
6 -9 20 - 23
10
11
12
13
14, 15, 16
17
18
19
24
25
26
27
28
Pin
Name
TX
Formal Name
Transmitter Data
Voltage Regulator
One
Receiver Data
Reset
Interrupt
Ground
Master In/Slave Out
Master Out/Slave In
System Clock
Chip Select
Wake-up Input
(L0: L2)
No Connect
Thermal Resistance
High
CAN Low
CAN High
Voltage Regulator
Two
Thermal Resistance
Low
Voltage Battery
Voltage Regulator
Three
Definition
Transmitter input of the LS CAN interface
This 5.0 V pin is a 3% low drop voltage regulator dedicated to the microcontroller supply.
Receiver output of the LS CAN interface
This is an Input/Output pin.
This output is asserted LOW when an enabled interrupt condition occurs.
These device ground pins are internally connected to the package lead frame to provide
a 33389-to-PCB thermal path.
This pin is the tri-state output from the shift register.
This pin is for the input of serial instruction data.
This pin clocks the internal shift registers.
This pin communicates with the system MCU and enables SPI communication.
Input interfaces to external circuitry. Levels at these pins can be read by SPI and input
can be used as programmable wake-up input in Sleep or Stop mode.
This pin does not connect.
Pin for the connection of the bus termination to CANH
CAN low input/output
CAN high input/output
This 5.0 V pin is a low drop voltage regulator dedicated to the peripherals supply.
Pin for the connection of the bus termination to CANL
This pin is voltage supply from the battery.
This pin is a 10
Ω
switch to V
BAT
, used to supply external contacts or relays.
V1
RX
RST
INT
GND
MISO
MOSI
SCLK
CS
L0: L2
NC
RTH
CANL
CANH
V2
RTL
VBAT
V3
33389
Analog Integrated Circuit Device Data
Freescale Semiconductor
5
FREESCALE [ FREESCALE SEMICONDUCTOR, INC ]
