Automotive Local Interconnect Network Physical Interface

www.DataSheet4U.com MOTOROLA Freescale Semiconductor, Inc. Semiconductor Technical Data Order Number: MC33399/D Rev. 4.0, 08/2001 Advance Information MC33399 Automotive “Local Interconnect Network” Physical Interface The MC33399 is a Physical Layer component dedicated to automotive sub bus applications. The device is compliant to LIN specification. Its main features are: • Speed Communication from 1 to 20Kb/s • Nominal Operation from VSUP 8 to 18V DC • Fully Functional up to 27V DC battery voltage. • 40V maximum Voltage during Load Dump • Handle from +40V to -18V DC voltage at LIN pin • Gnd disconnection fail safe at module level • An Unpowered Node does not disturb the network • GND Shift Operation at system level • Two Operation Modes: Normal and Sleep Mode • Very Low Standby Current during Sleep Mode 20uA • Wake-up Capability from LIN bus, MCU command and dedicated high voltage wake up input (interface to external switch) • Interface to MCU with CMOS compatible I/O pins • Control of External Voltage Regulator • LIN bus Threshold Voltage fully Compatible with LIN protocol specification • Bus slew rate control according to LIN protocol specification recommendations (2V/us typ.) • Internal pull up resistor • Handle Automotive Transients per ISO9137 Specification • ESD 4KV on LIN bus Pin • High EMC Immunity LIN INTERFACE SILICON MONOLITHIC INTEGRATED CIRCUIT Freescale Semiconductor, Inc... 8 1 D SUFFIX PLASTIC PACKAGE CASE 751 (SO-8) Simplified Block Diagram PIN CONNECTIONS Wake VSUP MC33399 Wake up INH EN V-Reg Ctrl V. ref Bias RX EN Wake TX 30k 1 2 3 4 8 7 6 5 INH Vsup LIN gnd Logic Rxd Protection Receiver LIN (Top view) Txd Driver ORDERING INFORMATION Device Operating Temperature Range Package Gnd _ This document contains information on a new product. Specifications and information herein are subject to change without notice. © Motorola, Inc., 2001. All rights reserved. - 40°C to+125°C SO-8 For More Information On This Product, Go to: www.freescale.com TM Freescale Semiconductor, Inc. MC33399 MAXIMUM RATINGS Ratings ELECTRICAL RATINGS VSUP - Continuous Supply Voltage - Transient Voltage (Load dump) Wake DC & Transient Voltage (Through a 33kohms serial resistor) Logic pins (Rx, Tx, EN) LIN - DC voltage - Transient (coupled through 1nF capacitor) INH - DC Voltage - Transient Voltage V VSUP VSUP Vwake Vlog Vbus -18 -150 Vinh -0.3 tbd VHesd -2 -4 VMesd -200 +200 V +2 +4 kV Vsup+0.3 tbd +40 +100 V -18V - 0.3 +27 +40 +40 5.5 V V V Symbol Min Typ Max Unit Freescale Semiconductor, Inc... ESD Human Body Model (100pF, 1.5 kOhms) - All Pins, Except LIN Pin - LIN Pin ESD Machine Model (220pF, 0 Ohms) - All Pins THERMAL RATINGS Junction Temperature Storage Temperature Ambient Temperature Thermal Resistance Junction to Ambient Thermal Shutdown Thermal Shutdown Hysteresis Tj Ts Ta Rtja Tshut Thyst - 40 - 55 - 40 +150 +165 +125 150 °C °C °C °C/W °C °C 150 8 170 10 200 20 ELECTRICAL CHARACTERISTICS ( VSUP = FROM 7 TO 18V, and TJ FROM -40 TO 150°C UNLESS OTHERWISE NOTED) Characteristics Description VSUP pin (Device power supply) Nominal DC Voltage Range Supply Current in Sleep Mode VSUP Is1 Symbol Min Typ Max Unit Conditions 7 13.5 20 18 50 V µA Sleep mode Vlin>Vsup-0.5V Vsup<14V 14V500 Ohms Supply Current in Sleep Mode and Vsup>14V Supply Current in Normal Mode Supply Current in Normal Mode Vsup Undervolatage Threshold Rx output pin (logic) Low Level Voltage Output High Level Voltage Output Tx input pin (logic) Low Level Voltage Input High Level Voltage Input Input Threshold Hysteresis Is2 Is(n-rec) Is(n-dom) 300 2 3 5.8 6.4 6.8 µA mA mA V Vsup_low Vol Voh 0 3.75 0.9 5.25 V V I out ≤ +1.5mA I out ≥ -250uA Vil Vih Vinhyst 3.5 50 400 1.5 V V mV 2 For More Information On This Product, Automotive “Local Interconnect Network” Physical Interface Go to: www.freescale.com Freescale Semiconductor, Inc. MC33399 ELECTRICAL CHARACTERISTICS ( VSUP = FROM 7 TO 18V, and TJ FROM -40 TO 150°C UNLESS OTHERWISE NOTED) Characteristics Description Pull-up Current Source Enable Input Pin (Logic) Low Level Voltage Input High Level Voltage Input Input Threshold Hysteresis Low Level Input Current (Vin 1V) High Level Input Current (Vin = 4V) Pull-down Current Vil Vih Vinhyst Iil Iih Idw 3.5 50 10 400 20 20 20 40 1.5 V V mV uA uA uA 1V14V) Ileak3 -600 uA Ileak4 25 uA Lin-vil Lin-vih 0 0.6 VSUP Vsup/2 0.05VSUP VSUP-0.8 0 0.4VSUP VSUP V 0.1 VSUP VSUP 5 V LIN hyst Vwuh Ileak V uA Normal mode Sleep mode 01k, Cbus<10nF LIN rise/fall Symmetry (Trise-tfall) Propagation Delay (Tx low to Lin low) (Driver propagation delay) Propagation Delay (Tx high to Lin high) (Driver propagation delay) Propagation Delay (LIN low to Rx low) (Receiver propagation delay) Tfall Trise Tlin sym TtxLinL TtxLinH TLinRxL TLinRxH TpropWL 4 4 50 1 1 -2 2 2 3 3 +2 1 1 6 6 V/us V/us us us us us us us Measured from 80 to 20% Measured from 20 to 80% Measured from 20 to 80% Measured from Tx H->L to LIN crossing 90%Vsup Measured from Tx L->H to LIN crossing 10%Vsup Symbol Min Typ Max Unit Conditions Freescale Semiconductor, Inc... Propagation Delay (LIN high to Rx high) (Receiver propagation delay) Propagation Delay (bus wake-up -> INH high) Figure 1. Timing Description Figure 2. Rise and Fall Time Description Tfall 0.8Vsup Tx recessive state Vsup LIN TtxLinL 0.4Vsup 0.9Vsup recessive state 0.6Vsup Trise 0.1Vsup dominant state 0.2Vsup 0.8Vsup Rx TLinRxL TtxLinH TLinRxH 0.2Vsup Figure 3. Bus Wake up Timing Description recessive state Vsup LIN 0.4Vsup dominant state INH TpropWL 4 For More Information On This Product, Automotive “Local Interconnect Network” Physical Interface Go to: www.freescale.com Freescale Semiconductor, Inc. MC33399 FUNCTIONAL DESCRIPTION VSUP Supply Pin Device power supply pin. It is connected to battery through a serial diode for reverse battery protection. The DC operating voltage is from 7 to 27V. This pin sustains standard automotive voltage conditions such as 27V DC during jump start conditions and 40V during load dump. An under voltage reset circuitry is implemented to disable the transmission path (from Tx to LIN) when Vsup is falling below 7V in order to avoid false bus message. Supply current in sleep mode is 20uA typical. GND Ground Pin Device gnd connection. In case ground disconnection at the module level, the MC33399 does not have significant current consumption on the LIN bus pin when in recessive state (less than 100uA is sourced from LIN bus pin, which create 100mV drop voltage from the 1 kohms LIN bus pull up resistor), for dominant state the pull up resistor should be always active. Gnd shift: the MC33399 handle ground shift up to 3V for Vsup>9V. Below 9V Vsup, ground shift can reduce Vsup value below the minimum Vsup operation of 7V. LIN Bus Pin This I/O pin represents the single-wire bus transmitter and receiver. Transmitter Characteristics The driver is a low side transistor with internal current limitation and thermal shutdown. An internal pull up resistor with a serial diode structure is integrated, so no external pullup components are required for the application in a slave node. An additional pull up resistor of 1kΩ must be added when the device is used in the master node. Voltage can go from +40V down to 18V DC below GND (18V) without no current other than the pull up resistance. This pin exhibit no reverse current from the LIN bus line to VSUP, even in case of GND shift or Vbat disconnection. LIN thresholds are compatible LIN Protocol Specification. The fall time, from recessive to dominant and the rise time from dominant to recessive are controlled to 2V/us typical. The symmetry between rise