33889 datasheet(4/60 Pages) FREESCALE

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Analog Integrated Circuit Device Data

Freescale Semiconductor

33889

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 Name

Function

Formal Name

Definition

Output

Receiver Data

CAN bus receive data output pin

Input

Transmitter Data

CAN bus receive data input pin

VDD1

Power

Output

Voltage Regulator One

5.0 V pin is a 2% low drop voltage regulator for to the microcontroller

supply.

RST

Output

Reset

This is the device reset output pin whose main function is to reset the

MCU.

INT

Output

Interrupt

This output is asserted LOW when an enabled interrupt condition

occurs.

6 -9,

20 - 23

GND

Ground

These device ground pins are internally connected to the package lead

frame to provide a 33889-to-PCB thermal path.

V2CTRL

Output

Voltage Source 2 Control

Output drive source for the V2 regulator connected to the external series

pass transistor.

VSUP

Power

Input

Voltage Supply

Supply input pin.

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.

Input

Voltage Regulator Two

5.0 V pin is a low drop voltage regulator dedicated to the peripherals

supply.

RTH

Output

RTH

Pin for connection of the bus termination resistor to CANH.

RTL

Output

RTL

Pin for connection of the bus termination resistor to CANL.

CANH

Output

CAN High

CAN high output pin.

CANL

Output

CAN Low

CAN low output pin.

SCLK

Input

System Clock

Clock input pin for the Serial Peripheral Interface (SPI).

WDOG

MISO

SCLK

GND

CANL

CANH

RTL

RTH

MOSI

RST

INT

GND

V2CTRL

VSUP

HS1

VDD1

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