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MC34912G5R2

更新时间： 2024-11-23 11:09:03
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飞思卡尔 - FREESCALE 驱动器
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94页 2615K
描述
LIN System Basis Chip with DC Motor Pre-driver and Current Sense

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MC34912G5R2 数据手册

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Document Number: MC33912  
Rev. 8.0, 3/2010  
Freescale Semiconductor  
Advance Information  
LIN System Basis Chip with DC  
Motor Pre-driver and Current  
Sense  
33912  
The 33912G5/BAC 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 5.0 V, 50 mA/60 mA 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 and 2.1 compliant LIN transceiver has waveshaping circuitry that  
can be disabled for higher data rates.  
SYSTEM BASIS CHIP WITH LIN  
2ND GENERATION  
Two 50 mA/60 mA high side switches and two 150 mA/160 mA low  
side switches with output protection are available. 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  
32-PIN LQFP  
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).  
ORDERING INFORMATION  
Temperature  
The 33912 is compatible with LIN Protocol Specification 2.0, 2.1, and  
SAEJ2602-2.  
Device  
Package  
Range (T )  
A
MC33912G5AC/R2  
MC34912G5AC/R2  
MC33912BAC/R2  
MC34912BAC/R2  
-40°C to 125°C  
-40°C to 85°C  
-40°C to 125°C  
-40°C to 85°C  
Features  
• Full-duplex SPI interface at frequencies up to 4.0 MHz  
• LIN transceiver capable of up to 100 kbps with wave shaping  
• Current sense module  
32-LQFP  
• Four high voltage analog/logic Inputs  
• Configurable window watchdog  
• Switched/protected 5.0 V output (used for Hall sensors)  
* See Page 2 for Device Variations  
• Two 50 mA high side and two 150 mA/160 mA low side protected switches  
• 5.0 V low drop regulator with fault detection and low voltage reset (LVR) circuitry  
• 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., 2009 - 2010. All rights reserved.  
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