MC33897CTEFR2 Datasheet, PDF (4/19 Pages) Freescale Semiconductor, Inc – Single Wire CAN Transceiver

PIN CONNECTIONS
PIN CONNECTIONS
GND
TXD
MODE0
MODE1
RXD
NC
GND
33897
1
14
2
13
3
12
4
11
5
10
6
9
7
8
GND
NC
BUS
LOAD
VBATT
CNTL
GND
Figure 3. 33897 Pin Connections
Table 2. Pin Definitions
A functional description of each pin can be found in the Functional Pin Description section, beginning on page 12.
33897 Pin Pin Name
Formal Name
Definition
1, 7, 8, 14
GND
Ground
Electrical Common Ground and Heat removal. A good thermal path will also reduce
the die temperature.
2
TXD
Transmit Data
Data input here will appear on the BUS pin. A logic [0] will assert the bus, a logic [1]
will make the bus go to the recessive state.
3, 4
MODE0,
Mode Control
These Pins control Sleep mode, Transmit Level, and Speed. They have weak pull-
MODE1
downs.
5
RXD
Receive Data
Open drain output of the data on BUS. A recessive bus = a logic [1], a dominant bus
= logic [0]. An external pull-up is required.
6, 13
9
10
11
NC
CNTL
VBATT
LOAD
No Connect
Control
Battery
Load
No internal connection to these Pins. Pin 13 can be connected to GND.
Provides a battery level logic signal.
Power input. An external diode is needed for reverse battery protection.
The external bus load resistor connects here to prevent bus pull-up in the event of
loss of module ground.
12
BUS
Bus
This pin connects to the bus through external components.
33897
4
Analog Integrated Circuit Device Data
Freescale Semiconductor