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MOTOROLA
SEMICONDUCTOR
TECHNICAL DATA
MC33188
Prototype Information
Bus Interface IC for Automotive Application
The MC33188D is a bus interface circuit especially designed to operate in the harsh automotive environment. It can be directly connected to a microcontroller and to the bus line. It is capable of interfacing several bus types, with single and multi wire congurations, including MIBus. The bus line is internally short-circuit protected. The circuit has an automatic standby mode to minimize the current consumption. Receiving path remains active during sleep mode. Several MC33188D can be connected to the same bus line and the device also includes a transmission monitoring circuit. Large Vbat Operating Range from 6 to 16 Volts Automatic Sleep Mode with Low Standby Current .Load Dump and Jump Start Protected MIBus Application Single, Multi wires and Full Duplex Operation Allowed 5V or 12V Bus High Voltage Level 2.2KW Bus Pull up Resistor Bus Line Short-circuit Protected -40C to +85C Operating Temperature Range CMOS Compatible Levels for Direct Microprocessor Interface Bus Line Thresholds Dependent on Vbat Simplied Application Schematic
BUS INTERFACE
SILICON MONOLITHIC INTEGRATED CIRCUIT
ORDERING INFORMATION Temperature Device Package Range -40C to +85C SO14 XC33188D
VCC PU SEN/STA BCEN TX Vcc MI Vcc
_
VBAT
PIN CONNECTIONS
PULL-UP Selection
2 .2 K
REC TIMING CONTROL CIRCUIT
TRM
RXD
+
+
MIR
NRXD RX-MI
Vbat
_
Pin 1: RX-MI Pin 2 : MIR Pin 3 : GND Pin 4 : VCC Pin 5 : TRM Pin 6 : REC Pin 7 : VBAT Pin 8 : PU Pin 9 : MI Pin 10 : SEN/STA Pin 11 : TX Pin 12 : BCEN Pin 13 : RXD Pin 14 : NRXD
GND
This document contains information on a new product under development. Motorola reserves the right to change or discontinue this product without notice.
O Motorola,Inc
10/12/98 Rev 1.0
MC33188
MAXIMUM RATINGS
Ratings Symbol Value Unit
Continuous Supply Voltage on Vcc Power Supply Voltage on Vbat - Continuous - During 15 seconds (jump start) - During 0.4 second (load dump) REC, TRM, MIR Voltage - Continuous - During 15 seconds (jump start) - During 0.4 second (load dump) ESD Voltage : Human Body Model - All pins except pins 2 and 6 - Pins 2 and 6 Storage Temperature Operating Junction Temperature Operating Ambient Temperature
Vcc Vbat
5.5 16 25 40
V V
Vmax -0.5 to 16 25 40 Vesd 2000 1500 Tstg Tj Tamb -55 to 150 -40 to 150 -40 to 85
V
V
C C C
ELECTRICAL CHARACTERISTICS Vcc from 4.75 to 5.25V, Vbat from 6 to 16V, Tamb from -40C to 85C unless otherwise noted Description RX-MI RX-MI Low Voltage at I = 5mA RX-MI High Voltage at I = -70mA MIR MIR Threshold MIR Input Current - Vmir = 0V - Vmir = 14.8V Vcc Vcc Supply Current : Vcc = 5V Vbat and Vcc Supply Current in Sleep Mode at Vcc = 5V and Vbat = 12V TRM TRM Saturation Voltage - At Vbat = 12V and I = 20mA - At Vbat = 16V and I = 25mA TRM Current Limit at Vtrm = 16V, Vtx = 0V TRM Leakage Current at Vtrm = 16V, Vtx = 5V REC REC Pull Up Resistor REC Input Current - Vrec = 4.2V, Vbat = 12V - Vrec = Vbat = 12V - Vrec = 14.8V, Vbat = 1V REC High Threshold: - Vbat = 6V - Vbat = 12V - Vbat = 16V Rrec Irec 0 0 0 HTH rec 2 6 3.6 6.6 8.6 4 9.5 _ _ _ 60 10 10 V 1400 2200 3000 Ohms mA SAT trm 0 0 ICCtrm ILtrm 25 0 0.3 0.36 50 _ 0.7 1 100 100 mA mA V Icc Ism 0 50 100 1 135 mA mA THmir Imir -200 -20 -100 0 0 20 1.5 2 3 V mA VOL rxmi VOH rxmi -0.3 0.7 * Vcc 0.2 * Vcc Vcc + 0.3 V V Symbol Min Typ Max Unit
MC33188
MOTOROLA
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MC33188
ELECTRICAL CHARACTERISTICS Vcc from 4.75 to 5.25V, Vbat from 6 to 16V, Tamb from -40C to 85C unless otherwise noted Description REC Low Threshold: - Vbat = 6V - Vbat = 12V - Vbat = 16V REC Hysteresis: - Vbat = 6V - Vbat = 12V - Vbat = 16V REC Output Level High Vbat = 12V, I = -100mA, TX = 5V REC Output Level High in MIBus mode Vbat = 12V, I = -50mA, MIsel = 1, PU = 0 Vbat Vbat Supply Current Pull up OFF Vbat Supply Current Pull up ON PU PU Pull Down Resistor PU Input Voltage High PU Input Voltage Low PU Hysteresis MI MI Pull Down Resistor MI Input Voltage High MI Input Voltage Low MI Hysteresis Rmi VIHmis VILmis HYSmis 10 0.7 * Vcc -0.3 0.3 1 20 30 Vcc + 0.3 0.3 * Vcc 1.5 K V V V Rpu VIHpu VILpu HYSpu 10 0.7 * Vcc -0.3 0.3 1 20 30 Vcc + 0.3 0.3 * Vcc 1.5 K V V V Ibat Ibat 1 15 mA mA Symbol LTH rec 2.7 6.1 HYS rec 0.3 1 HLrec HLrecmi 10.8 4.5 0.6 0.8 1.5 11.6 4.8 1.5 2.2 12 _ V V 2.9 5.8 7.1 4 9 V Min Typ Max Unit V
SEN/STA
SEN/STA Input Voltage High SEN/STA Input Voltage Low SEN/STA Hysteresis SEN/STA Output Voltage High at I = -20mA SEN/STA Output Voltage Low at I = 10mA SEN/STA Input Current. Vcc = 5.5V - At VSEN/STA = 1.65V - At VSEN/STA = 5.5V TX TX Input Voltage High TX Input Voltage Low TX Hysteresis VIHtx VILtx HYStx 0.7 * Vcc -0.3 0.3 1 Vcc + 0.3 0.3 * Vcc 1.5 V V V VIHss VILss HYSss VOHss VOLss Isen/sta -400 -200 -160 0 200 400 0.7 * Vcc -0.3 0.3 0.7 * Vcc 0.2 * Vcc 1 Vcc + 0.3 0.3 * Vcc 1.5 V V V V V uA
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MOTOROLA
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MC33188
ELECTRICAL CHARACTERISTICS Vcc from 4.75 to 5.25V, Vbat from 6 to 16V, Tamb from -40C to 85C unless otherwise noted Description BCEN BCEN Pull Down Resistor BCEN Input Voltage High BCEN Input voltage Low BCEN Hysteresis RXD and NRXD RXD Low Voltage at I = 220mA (note 1) RXD High Voltage at I = -220mA (note 1) NRXD Low Voltage at I = 220mA (note 1) NRXD High Voltage at I = -220mA (note 1) VOLrxd VOHrxd VOL nrxd VOH nrxd -0.3 0.7 * Vcc -0.3 0.7 * Vcc 0.3 * Vcc Vcc + 0.3 0.3 * Vcc Vcc + 0.3 V V V V Rbcen VIHbcen VILbcen HYSbcen 10 0.7 * Vcc -0.3 0.3 1 20 30 Vcc + 0.3 0.3 * Vcc 1.5 K V V V Symbol Min Typ Max Unit
NOTE 1 : These values are not affected even if REC Voltage is down to -10V.
DYNMIC CHARACTERISTICS (AT VBAT = 12V and TA = 25C) Ratings T Sleep T Low T Bit_compare TSperr TRecovery Twake
TRM time. C=40pF. REC&TRM connected. Pu=1
Symbol Tsl Tl Tbc Tsp Tr Tw TRMt
Min 10 3 25 0.9 30 _ 1 1
Typ 40 6 40 1.36 50 _ 1.6 1.6 10 8 3 1.3
Max 200 12 60 1.8 75 2 2 2
Unit ms ms ms ms ms ms V/ms
- Rise Time - Fall Time Delay time. C = 12pF - TX rise time to RXD rise time - TX fall time to RXD fall time - TX rise time to RXMI rise time - TX fall time to RXMI fall time TD
ms 5 5 0.5 0.5 20 20 4 2.5
MC33188
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MC33188
PIN DESCRIPTION
Pin Number
Pin Name
Description
1 2 3 4 5 6
RXMI MIR GND Vcc TRM REC
This pin reects the logical value of the MIR input pin. This pin receives the data from the MIBus single line wire when the interface is in MIBus mode conguration. Gnd pin. 5V typical power supply pin. Supply current is 0.8mA typical and down to 135mA in sleep mode. Bus line transmission pin. It has the same phase as the input TX, it is an open collector structure, short-circuit protected. Bus line reception pin. The voltage level of the bus is determined through a selectable pull-up resistor connected to either Vcc or Vbat. Soothed depends on Vbat voltage, it is approximately : K x Vbat + Vbe. 12V typical power supply pin. It supplies REC pull-up resistors and comparators. Pull-up selection for REC output. - PU = 0, pull-up resistor OFF - PU=1, pull-up resistor ON In the MIBus mode (MI=1), the bus line REC can be supplied at 5 or 12V, with pull-up resistor ON : - PU = 0 and MI = 1, REC is supplied at 5V (normal MIBus mode) - PU = 1 and MI = 1, REC is supplied at 12V (MIBus programming mode) MIBus selection. - MI = 1, the circuit is congured in the MIBus mode. - MI = 0, the circuit is congured for other bus applications. This pin has an internal pull down resistor. When MIBus is selected, the internal timing control circuit is disabled. MIBus = 1 switches on the pull-up resitor. Sender status pin is an input/output pin. As an input, if SEN/STA is forced at 0, the timing control circuit is disabled : output cannot be blocked, sending path is always free. If SEN/STA is forced at 1, output TRM and the sending path are blocked. As an output : the MCU can read back the status of the timing control circuit by reading the SEN/STA voltage level. - SEN/STA = 0 means that the sending path is free. - SEN/STA = 1 means that the sending path is blocked. In the MIBus mode (MI=1) the timing control circuit status is reported on SEN/STA but the sending path is always free. Transmission input. The logical state of TX is transmitted to output TRM. The logical state 1 forces the output transistor OFF and the logical state 0 forces the output transistor ON. It has an internal pull-up resistor. Bit Compare Enable. When BCEN = 1 the compare circuit for TX and REC is disabled. This pin has an internal pull down resistor. Receive output. The logical state of REC is transmitted to RXD and NRXD. The input comparator threshold are adapted to Vbat voltage. This pin exhibit the complemented value of the data presented at RXD.
7 8
Vbat PU
9
MI
10
SEN/STA
11
TX
12 13 14
BCEN RXD NRXD
MC33188
MOTOROLA
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MC33188
Timing Control Circuit The purpose of this portion of the circuit is to monitor the transmission and to report the status to the microcontroller. If a special condition occurs, the timing control circuit will block the output and set the SEN/STA pin to 1. Four special conditions exist : 1) TX = 0 for a time greater than Tlow (Tlow = 6 ms typical). In this case the control circuit blocks TRM output and set SEN/ STA to 1. 2) TX = 1 and REC = 0 for a time greater than Tbit-compare (Tbit-compare = 40 ms typical). In this case, the control circuit blocks TRM output and set SEN/STA to 1. 3) TX = 1 and REC = 1 for a time greater than Tsperr (Tsperr = 1.36 ms typical). In this case, if the output has been previously blocked by one of the above condition, the sending path will be set free and SEN/STA set back to 0. 4) If condition TX = 0 less than Tlow with output not blocked by the timing control circuit is followed by condition TX = 1 and REC = 1 during min. Trecovery (Trecovery = 50 ms typical), then the timing control circuit is totally reseted (internal capacitor discharged). The sending path stays free and SEN/ STA remains at 0. When condition 1 or 2 occurs, the timing control circuit switches OFF the output transistor and set SEN/STA to 1. If BCEN = 1, the bit compare function condition 2 is disabled. When MIBus is selected (MIsel = 1), the timing control circuit action is disabled. This means that the circuit operates and report its status on SEN/STA but doesnOt block TRM ouput. Sleep Mode Function If TXD = 1 and no transition occurs on REC for a time greater than Tsleep (Tsleep = 40 ms typical) and if the circuit is not in MIBus mode (MI = 0), the circuit will be switched into the sleep mode. In this mode the Vcc current is reduced to 135mA maximum, the receiving path from REC to RXD and NRXD remains active. A transition on REC or a high to low transition on TXD will wake up the circuit within Twake.
TRUTH TABLE for PULL-UP and BUS MODE MI Open or Low Open or Low High High PU Open or Low High Open or Low High Effect On Bus No pull-up active 12V pull-up active 5V pull-up active - MIBus mode 12V pull-up active - MIBus programming mode
Figure 1. Single Wire MIBus Conguration
VCC PU SEN/STA BCEN PULL-UP Selection
VBAT
2 .2 K
REC TRM
MI Bus
TIMING CONTROL CIRCUIT Vcc Vcc
_ + +
MCU
TX MI RXD NRXD RX-MI
MIR
Vbat
_
GND
MC33188
MOTOROLA
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MC33188
Figure 2. Single Wire Conguration
VCC PU SEN/STA BCEN PULL-UP Selection
VBAT
2 .2 K
REC Bus TRM
TIMING CONTROL CIRCUIT Vcc Vcc
_ + +
MCU
TX MI RXD NRXD RX-MI
MIR
Vbat
_
GND
Figure 3. Full Duplex Conguration
VCC PU SEN/STA BCEN PULL-UP Selection
VBAT
2 .2 K
REC Bus TRM Bus
TIMING CONTROL CIRCUIT Vcc Vcc
_ + +
MCU
TX MI RXD NRXD RX-MI
MIR
Vbat
_
GND
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. Typical parameters which may be provided in Motorola data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including Typicals must be validated for each customer application by customer's technical experts. Motorola does not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer.
MC33188
MOTOROLA
7

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