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Freescale Semiconductor Electronic Components Datasheet

MC33912 Datasheet

LIN System Basis Chip

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NXP Semiconductors
Technical Data
LIN system basis chip with dc motor
pre-driver and current sense
Document Number: MC33912
Rev. 10.0, 8/2016
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 which 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 (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).
The 33912 is compatible with LIN Protocol Specification 2.0, 2.1, and SAEJ2602-
2. This device is powered using SMARTMOS technology.
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
• Four high voltage analog/logic Inputs
• Configurable window watchdog
• Switched/protected 5.0 V output (used for Hall sensors)
• 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
SYSTEM BASIS CHIP WITH LIN
2ND GENERATION
AC SUFFIX (Pb-FREE)
98ASH70029A
32-PIN LQFP
Applications
• Door module: window
• Lift, mirror, door lock, seat control switch
• Seat position motors, occupancy sensor
• Rain and light sensor, light control, sun roof
• Wiper, turning light, cruise control
• Climate: small motors, control panel
• Engine control: sensors, small motors
VBAT
LIN INTERFACE
MCU
VS1
VS2
LIN
VDD
33912
VSENSE
HS1
L1
L2
L3
L4
PWMIN
ADOUT0
ADOUT1
MOSI
MISO
SCLK
CS
RXD
TXD
IRQ
RST
LS1
LS2
ISENSEH
ISENSEL
HVDD
HS2
WDCONF
M
Figure 1. 33912 simplified application diagram
© 2016 NXP B.V.


Freescale Semiconductor Electronic Components Datasheet

MC33912 Datasheet

LIN System Basis Chip

No Preview Available !

MC33912G5AC / MC34912G5AC
1 Orderable parts
The 33912G5 data sheet is within MC33912G5 product specifications, Pages 3 to 52
The 33912BAC data sheet is within MC33912BAC product specifications, Pages 53 to 103
Table 1. Orderable part variations
Part number (1)
MC33912G5AC
Temperature (TA)
-40 to 125 °C
Package
MC34912G5AC -40 to 85 °C
32-LQFP
MC33912BAC
MC34912BAC
-40 to 125 °C
-40 to 85 °C
Generation
2.5
Changes
1. Increase ESD Gun IEC61000-4-2 (gun test contact with 150 pF,
330 ohm test conditions) performance to achieve ±6.0 kV min on the
LIN pin.
2. Immunity against ISO7637 pulse 3b
3. Reduce EMC emission level on LIN
4. Improve EMC immunity against RF - target new specification including
3x68pF
5. Comply with J2602 conformance test
2.0 Initial release
Notes
1. To order parts in Tape & Reel, add the R2 suffix to the part number.
33912
2
NXP Semiconductors


Part Number MC33912
Description LIN System Basis Chip
Maker Freescale Semiconductor
Total Page 30 Pages
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