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MC34912BACR2

更新时间： 2024-11-23 04:40:51
品牌 Logo 应用领域
飞思卡尔 - FREESCALE 驱动器接口集成电路
页数 文件大小 规格书
47页 887K
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LIN System Basis Chip with DC Motor Pre-driver and Current

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Document Number: MC33912  
Rev. 4.0, 2/2008  
Freescale Semiconductor  
Advance Information  
LIN System Basis Chip with DC  
Motor Pre-driver and Current  
Sense  
33912  
The 33912 is a Serial Peripheral Interface (SPI) -controlled System  
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.  
SYSTEM BASIS CHIP WITH LIN  
2ND GENERATION  
Two 60mA high side switches and two 160mA low side switches  
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.  
AC SUFFIX (Pb-FREE)  
98ASH70029A  
The 33912 has three main operating modes: Normal (all functions  
available), Sleep (VDD off, wake-up via LIN, wake-up inputs (L1-L4),  
cyclic sense and forced wake-up), and Stop (VDD on with limited  
current capability, wake-up via CS, LIN bus, wake-up inputs, cyclic  
sense, forced wake-up and external reset).  
32-PIN LQFP  
The 33912 is compatible with LIN Protocol Specification 2.0.  
ORDERING INFORMATION  
Temperature  
Features  
Device  
Package  
Range (T )  
A
• 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  
MC33912BAC/R2  
MC34912BAC/R2  
-40°C to 125°C  
-40°C to 85°C  
32-LQFP  
• 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  
33912  
V
BAT  
VSENSE  
VS1  
VS2  
HS1  
L1  
L2  
L3  
L4  
LIN INTERFACE  
LIN  
VDD  
PWMIN  
ADOUT0  
ADOUT1  
MOSI  
MISO  
SCLK  
CS  
RXD  
TXD  
IRQ  
LS1  
M
LS2  
ISENSEH  
MCU  
ISENSEL  
HVDD  
HS2  
RST  
WDCONF  
Figure 1. 33912 Simplified Application Diagram  
* This document contains certain information on a new product.  
Specifications and information herein are subject to change without notice.  
© Freescale Semiconductor, Inc., 2007. All rights reserved.  
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