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MC33889 Datasheet(PDF) 4 Page - Freescale Semiconductor, Inc

Part No. MC33889
Description  System Basis Chip with Low Speed Fault Tolerant CAN Interface
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Maker  FREESCALE [Freescale Semiconductor, Inc]
Homepage  http://www.freescale.com
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MC33889 Datasheet(HTML) 4 Page - Freescale Semiconductor, Inc

 
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Analog Integrated Circuit Device Data
4
Freescale Semiconductor
33889
PIN CONNECTIONS
PIN CONNECTIONS
Figure 2. 33889 Pin Connections
Table 2. Pin Definitions
A functional description of each pin can be found in the Functional pin description section page 24.
Pin
Pin Name
Pin
Function
Formal Name
Definition
1
RX
Output
Receiver Data
CAN bus receive data output pin
2
TX
Input
Transmitter Data
CAN bus receive data input pin
3
VDD1
Power
Output
Voltage Regulator One
5.0 V pin is a 2% low drop voltage regulator for to the microcontroller
supply.
4
RST
Output
Reset
This is the device reset output pin whose main function is to reset the
MCU.
5
INT
Output
Interrupt
This output is asserted LOW when an enabled interrupt condition
occurs.
6 -9,
20 - 23
GND
Ground
Ground
These device ground pins are internally connected to the package lead
frame to provide a 33889-to-PCB thermal path.
10
V2CTRL
Output
Voltage Source 2 Control
Output drive source for the V2 regulator connected to the external series
pass transistor.
11
VSUP
Power
Input
Voltage Supply
Supply input pin.
12
HS1
Output
High-Side Output
Output of the internal high-side switch.
13 - 14
L0, L1
Input
Level 0 - 1 Inputs
Inputs from external switches or from logic circuitry.
15
V2
Input
Voltage Regulator Two
5.0 V pin is a low drop voltage regulator dedicated to the peripherals
supply.
16
RTH
Output
RTH
Pin for connection of the bus termination resistor to CANH.
17
RTL
Output
RTL
Pin for connection of the bus termination resistor to CANL.
18
CANH
Output
CAN High
CAN high output pin.
19
CANL
Output
CAN Low
CAN low output pin.
24
SCLK
Input
System Clock
Clock input pin for the Serial Peripheral Interface (SPI).
WDOG
MISO
SCLK
GND
GND
GND
GND
CANL
CANH
RTL
RTH
V2
CS
MOSI
RX
RST
INT
GND
GND
GND
GND
V2CTRL
VSUP
HS1
L0
L1
TX
VDD1
4
5
6
7
8
9
10
11
12
13
14
2
3
28
25
24
23
22
21
20
19
18
17
16
15
27
26
1


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