mc33912 Freescale Semiconductor, Inc, mc33912 Datasheet

mc33912

Manufacturer Part Number

mc33912

Description

Lin System Basis Chip With Dc Motor Pre-driver And Current Sense

Manufacturer

Freescale Semiconductor, Inc

Datasheet

1.MC33912.pdf (47 pages)

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Freescale Semiconductor

Advance Information

* This document contains certain information on a new product.

Specifications and information herein are subject to change without notice.

LIN System Basis Chip with DC

Motor Pre-driver and Current

Sense

Basis Chip (SBC), combining many frequently used functions in an

MCU-based system, plus a Local Interconnect Network (LIN)

transceiver. The 33912 has a 5.0V - 60mA low dropout regulator with

full protection and reporting features. The device provides full SPI-

readable diagnostics and a selectable timing watchdog for detecting

errant operation. The LIN Protocol Specification 2.0 compliant LIN

transceiver has waveshaping circuitry that can be disabled for higher

data rates.

with output protection are available for driving resistive and inductive

loads. All outputs can be pulse-width modulated (PWM). Four high

voltage inputs are available for use in contact monitoring, or as external

wake-up inputs. These inputs can be used as high voltage Analog

Inputs. The voltage on these pins is divided by a selectable ratio and

available via an analog multiplexer.

available), Sleep (V

cyclic sense and forced wake-up), and Stop (V

current capability, wake-up via CS, LIN bus, wake-up inputs, cyclic

sense, forced wake-up and external reset).

Features

• Full-duplex SPI interface at frequencies up to 4MHz

• LIN transceiver capable of up to 100kbps with wave shaping

• Two 60mA high side and two 160mA low side protected switches

• Four high voltage analog/logic Inputs

• Configurable window watchdog

• 5.0V low drop regulator with fault detection and low voltage reset (LVR) circuitry

• Current sense module

• Switched/protected 5.0V output (used for Hall sensors)

• Pb-free packaging designated by suffix code AC

The 33912 is a Serial Peripheral Interface (SPI) -controlled System

Two 60mA high side switches and two 160mA low side switches

The 33912 has three main operating modes: Normal (all functions

The 33912 is compatible with LIN Protocol Specification 2.0.

off, wake-up via LIN, wake-up inputs (L1-L4),

BAT

LIN INTERFACE

MCU

Figure 1. 33912 Simplified Application Diagram

on with limited

VS1

VS2

LIN

VDD

PWMIN

ADOUT0

ADOUT1

MOSI

MISO

SCLK

RXD

TXD

IRQ

RST

33912

WDCONF

ISENSEH

ISENSEL

VSENSE

HVDD

HS1

HS2

LS1

LS2

MC33912BAC/R2

MC34912BAC/R2

Device

SYSTEM BASIS CHIP WITH LIN

ORDERING INFORMATION

AC SUFFIX (Pb-FREE)

- 40°C to 125°C

98ASH70029A

Document Number: MC33912

32-PIN LQFP

-40°C to 85°C

Temperature

33912

GENERATION

Range (T

)

Rev. 4.0, 2/2008

Package

32-LQFP

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