mc33389 Freescale Semiconductor, Inc, mc33389 Datasheet - Page 5

• Manufacturer Part Number: mc33389
• Description: System Basis Chip With Low Speed Fault Tolerant Can
• Manufacturer: Freescale Semiconductor, Inc

Table 2. 33389 Pin Definitions: SOICW 28-Lead
Analog Integrated Circuit Device Data
Freescale Semiconductor
Pin Number
6 -9 20 - 23
14, 15, 16
A functional description of each pin can be found in the Functional Pin Description section beginning on
10
11
12
13
17
18
19
24
25
26
27
28
1
2
3
4
5
CANH
Name
SCLK
L0: L2
CANL
VBAT
MISO
MOSI
GND
RST
RTH
RTL
Pin
RX
INT
NC
CS
TX
V1
V2
V3
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
Formal Name
SCLK
MISO
MOSI
GND
GND
GND
GND
RST
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
INT
RX
CS
TX
V1
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
BAT
, used to supply external contacts or relays.
Definition
page
PIN CONNECTIONS
17.
33389
5