MC33989 데이터 시트보기 (PDF) - Freescale Semiconductor

부품명

상세내역

일치하는 목록

MC33989

System Basis Chip with High-Speed CAN Transceiver

Freescale Semiconductor 

PIN CONNECTIONS

PIN CONNECTIONS

RX 1

TX 2

VDD1 3

RST 4

INT 5

GND 6

GND 7

GND 8

GND 9

V2 10

V2CTRL 11

VSUP 12

HS1 13

L0 14

28 WD

27 CS

26 MOSI

25 MISO

24 SCLK

23 GND

22 GND

21 GND

20 GND

19 CANL

18 CANH

17 L3

16 L2

15 L1

Figure 3. 33989 Pin Connections

Table 1. 33989 Pin Definitions

A functional description of each pin can be found in the Functional Pin Description section beginning on page 18.

Pin Number Pin Name Pin Function Formal Name

Definition

1

RX

Output

Receive Data

CAN bus receive data output pin.

2

TX

Input

Transmit Data

CAN bus transmit data input pin.

3

VDD1

Power

Voltage Digital Drain 5.0 V regulator output pin. Supply pin for the MCU.

Output

One

4

RST

Output

Reset

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

MCU. This pin has an internal pullup current source to VDD.

5

INT

Output

Interrupt

This output is asserted LOW when an enabled interrupt condition occurs.

The output is a push-pull structure.

6–9

20–23

10

GND

V2

Ground

Input

Ground

Voltage Source Two

These device ground pins are internally connected to the package lead

frame to provide a 33989-to-PCB thermal path.

Sense input for the V2 regulator using an external series pass transistor.

V2 is also the internal supply for the CAN transceiver.

11

V2CTRL

Power

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

Output

pass transistor.

12

VSUP

Power

Voltage Supply

Supply input pin for the 33989.

13

HS1

Output

High Side One

Output of the internal high-side switch. The output current is internally

limited to 150 mA.

14–17

22

23

24

25

L0:L3

CANH

CANL

SCLK

MISO

Input

Output

Output

Input

Output

Level 0: 3

CAN High

CAN Low

System Clock

Master In/Slave Out

Inputs from external switches or from logic circuitry.

CAN high output pin.

CAN low output pin.

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

SPI data sent to the MCU by the 33989. When CS is HIGH, the pin is in

the high-impedance state.

26

MOSI

Input

Master Out/Slave In SPI data received by the 33989.

27

CS

Input

Chip Select

The CS input pin is used with the SPI bus to select the 33989.

28

WD

Output

Watch Dog

The WD output pin is asserted LOW if the software watchdog is not

correctly triggered.

Analog Integrated Circuit Device Data

Freescale Semiconductor

33989

3

Share Link: