MC33912_10 Datasheet, PDF (1/94 Pages) Freescale Semiconductor, Inc – LIN System Basis Chip with DC Motor Pre-driver and Current Sense

Freescale Semiconductor
Advance Information
MC33912G5AC / MC34912G5AC
Document Number: MC33912
Rev. 8.0, 3/2010
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.
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.
The 33912 has three main operating modes: Normal (all functions
available), Sleep (V_DD off, wake-up via LIN, wake-up inputs (L1-L4),
cyclic sense and forced wake-up), and Stop (V_DD on with limited current
capability, wake-up via CS, LIN bus, wake-up inputs, cyclic sense,
forced wake-up and external reset).
The 33912 is compatible with LIN Protocol Specification 2.0, 2.1, and
SAEJ2602-2.
SYSTEM BASIS CHIP WITH LIN
2^ND GENERATION
AC SUFFIX (Pb-FREE)
98ASH70029A
32-PIN LQFP
ORDERING INFORMATION
Device
Temperature
Range (T_A)
Package
Features
MC33912G5AC/R2 -40°C to 125°C
• Full-duplex SPI interface at frequencies up to 4.0 MHz
MC34912G5AC/R2
-40°C to 85°C
• LIN transceiver capable of up to 100 kbps with wave shaping
• Current sense module
• Four high voltage analog/logic Inputs
MC33912BAC/R2
MC34912BAC/R2
- 40°C to 125°C
-40°C to 85°C
• 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
V_BAT
33912
VS1
VSENSE
VS2
HS1
32-LQFP
L1
LIN INTERFACE
LIN
L2
L3
L4
VDD
PWMIN
ADOUT0
LS1
ADOUT1
M
MCU
MOSI
LS2
MISO
ISENSEH
SCLK
CS
RXD
TXD
IRQ
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.
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