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기능 LIN System Basis Chip
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MC33912 데이터시트, 핀배열, 회로
Freescale Semiconductor
Advance Information
Document Number: MC33912
Rev. 4.0, 2/2008
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.
www.DataSheet4UT.wcoom60mA 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.
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.
SYSTEM BASIS CHIP WITH LIN
2ND GENERATION
AC SUFFIX (Pb-FREE)
98ASH70029A
32-PIN LQFP
ORDERING INFORMATION
Features
• Full-duplex SPI interface at frequencies up to 4MHz
Device
• 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
• 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
VBAT
33912
VS1 VSENSE
VS2 HS1
Temperature
Range (TA)
-40°C to 125°C
-40°C to 85°C
Package
32-LQFP
LIN INTERFACE
LIN
L1
L2
L3
L4
VDD
MCU
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
* 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.




MC33912 pdf, 반도체, 판매, 대치품
PIN CONNECTIONS
Table 1. 33912 Pin Definitions
A functional description of each pin can be found in the Functional Pin Description section beginning on page 21.
Pin
Pin Name
Formal Name
Definition
12
WDCONF
Watchdog
Configuration Pin
This input pin is for configuration of the watchdog period and allows the
disabling of the watchdog.
13 LIN
LIN Bus
This pin represents the single-wire bus transmitter and receiver.
This pin is the device LIN ground connection. It is internally connected to the
14
LGND
LIN Ground Pin
PGND pin.
15 ISENSEL
Current Sense Pins Current Sense differential inputs.
16 ISENSEH
17
www.DataSheet4U.co1m9
LS2
Low Side Outputs Relay drivers low side outputs.
LS1
This pin is the device low side ground connection. It is internally connected to
18
PGND
Power Ground Pin the LGND pin.
20 L4
21 L3
These pins are the wake-up capable digital inputs(1). In addition, all Lx inputs
22
L2
Wake-Up Inputs
can be sensed analog via the analog multiplexer.
23 L1
24 HS2 High Side Outputs High side switch outputs.
25 HS1
26 VS2
These pins are device battery level power supply pins.VS2 is supplying the
27 VS1 Power Supply Pin HSx drivers while VS1 supplies the remaining blocks.(2)
29
VSENSE
Voltage Sense Pin Battery voltage sense input.(3)
30
HVDD
Hall Sensor Supply +5.0V switchable supply output pin.(4)
Output
31
VDD
Voltage Regulator
Output
+5.0V main voltage regulator output pin.(5)
32
AGND
Analog Ground Pin This pin is the device analog ground connection.
Notes
1. When used as digital input, a series 33kresistor must be used to protect against automotive transients.
2. Reverse battery protection series diodes must be used externally to protect the internal circuitry.
3. This pin can be connected directly to the battery line for voltage measurements. The pin is self protected against reverse battery
connections. It is strongly recommended to connect a 10kresistor in series with this pin for protection purposes.
4. External capacitor (1µF < C < 10µF; 0.1< ESR < 5) required.
5. External capacitor (2µF < C < 100µF; 0.1< ESR < 10) required.
33912
4
Analog Integrated Circuit Device Data
Freescale Semiconductor

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MC33912 전자부품, 판매, 대치품
ELECTRICAL CHARACTERISTICS
STATIC ELECTRICAL CHARACTERISTICS
STATIC ELECTRICAL CHARACTERISTICS
Table 3. Static Electrical Characteristics
Characteristics noted under conditions 5.5V VSUP 18V, -40°C TA 125°C for the 33912 and -40°C TA 85°C for the
34912, unless otherwise noted. Typical values noted reflect the approximate parameter mean at TA = 25°C under nominal
conditions, unless otherwise noted.
Characteristic
SUPPLY VOLTAGE RANGE (VS1, VS2)
Symbol Min Typ Max Unit
Nominal Operating Voltage
VSUP 5.5 – 18 V
Functional Operating Voltage(16)
VSUPOP
– 27 V
Load Dump
VSUPLD
– 40 V
www.DataSheetS4UUP.cPoLmY CURRENT RANGE (VSUP = 13.5V)
Normal Mode (IOUT at VDD = 10mA), LIN Recessive State(17)
Stop Mode, VDD ON with IOUT = 100µA, LIN Recessive State(17), (18), (19)
5.5V < VSUP < 12V
VSUP = 13.5V
IRUN
ISTOP
– 4.5 10 mA
µA
– 48 80
– 58 90
Sleep Mode, VDD OFF, LIN Recessive State(17), (19)
5.5V < VSUP < 12V
12V VSUP < 13.5V
ISLEEP
µA
– 27 35
– 37 48
Cyclic Sense Supply Current Adder(20)
ICYCLIC – 10 – µA
SUPPLY UNDER/OVER VOLTAGE DETECTIONS
Power-On Reset (BATFAIL)(21)
Threshold (measured on VS1)(20)
Hysteresis (measured on VS1)(20)
VBATFAIL
1.5
3.0
3.9
VBATFAIL_HYS
0.9
V
Vsup under voltage detection (VSUV Flag) (Normal and Normal Request
Modes, Interrupt Generated)
Threshold (measured on VS1)
Hysteresis (measured on VS1)
Vsup over voltage detection (VSOV Flag) (Normal and Normal Request
Modes, Interrupt Generated)
Threshold (measured on VS1)
Hysteresis (measured on VS1)
VSUV
VSUV_HYS
VSOV
VSOV_HYS
5.55
18
6.0
1.0
19.25
1.0
6.6
20.5
V
V
Notes
16. Device is fully functional. All features are operating.
17. Total current (IVS1 + IVS2) measured at GND pins excluding all loads, cyclic sense disabled.
18. Total IDD current (including loads) below 100µA.
19. Stop and Sleep Modes current will increase if VSUP exceeds13.5V.
20. This parameter is guaranteed by process monitoring but not production tested.
21. The Flag is set during power up sequence. To clear the flag, a SPI read must be performed.
Analog Integrated Circuit Device Data
Freescale Semiconductor
33912
7

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