MC33199 FREESCALE | Alldatasheet

Document overview

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Technical content

Features

  • Electrically Compatible with Sp ecification “Diagnosis System ISO9141”
  • Transmission speed up to 200kBaud
  • Internal Voltage Reference Generator for Line Comparator Thresholds
  • TXD, RXD and LO pins are 5V CMOS Compatible
  • High Current Capability of DIA pin (K line)
  • Short Circuit Protection for the K Line Input
  • Over Temperature Shutdown with Hysteresis
  • Large Operating Range of Driver Supply Voltage
  • Large Operating Temperature Range
  • ESD Protected pins
  • Pb-Free Packaging Designated by Suffix Code EF

Figure 1. Simplified Application Diagram

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ORDERING INFORMATION

Range (TA) Package MC33199D -40°C to 125°C 14 SOIC MCZ33199EF/R2 33199 VCC LO RXD TXD VS L DIA GND 33199 MCU VDD I/O SCIRXD SCITXD VDD VBAT ISO L-LINE ISO K-LINE VDD (BUS)

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Figure 2. 33199 Simplified Internal Block Diagram

33199 VSVCC

Figure 3. 33199 Pin Connections Table 1. Pin Definitions A functional description of each pin can be found in the Functional Pin Description section, beginning on page 12. 2 REF-IN-L Input reference for C2 comparator. 3 REF-IN-K Input reference for C1 comparator. 4 LO This pin control Sleep Mode, Transmit Level, and Speed. It has a weak pulldown. external pullup is required. 7, 8 NC No internal connection to these pins. 9 DIA Provides a battery-level logic signal. 11 I1 Power input. An external diode is needed for reverse battery protection.

12 L The external bus load resistor connects here to prevent bus pullup in the event of loss of module

13 VS This pin connects to the bus through external components. 14 REF-OUT Internal reference voltage generator output pin.

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ELECTRICAL CHARACTERISTICS

Table 2. Maximum Ratings permanent damage to the device.

  1. The device is compatible with Spec ification: “Diagnosis System ISO9141”
  2. See the test Circuit ( Figure 26). Transient test pulse according to ISO76371 and DIN 40839, highest test levels
  3. Pin soldering temperature limit is for 10 seconds maximum dura tion. Not designed for immersion soldering. Exceeding these limits may

cause malfunction or permanent damage to the device.

  1. Freescale’s Package Reflow capability meets Pb-free requirements for JEDEC standard J-STD-020C. For Peak Package Reflow

MC33xxxD enter 33xxx), and review parametrics.

Analog Integrated Circuit Device Data Freescale Semiconductor 5 33199 STATIC ELECTRICAL CHARACTERISTICS STATIC ELECTRICAL CHARACTERISTICS Table 3. Static Electrical Characteristics approximate parameter means at TA = 25°C under nominal conditions unless otherwise noted.

  1. Measured with TXD=Vcc, I1=Vs, DIA & L high, no load, REF-IN-L and REF-IN-K connected to REF-OUT

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STATIC ELECTRICAL CHARACTERISTICS L INPUT PIN 12 High Level Input Threshold Voltage (REF-IN-L connected to REF-OUT) VIH VREF MIN 0.25V VREF 0.325V VREF MAX 0.4V V Low Level Input Threshold Voltage (REF-IN-L connected to REF-OUT) VIL VREF MIN -0.2V VREF -0.125V VREF MAX -0.05V V Input Hysteresis VHYST 300 450 600 mV Leakage Current ILEAK 4.0 10 16 µΑ L1 INPUT PIN 11 Static Source Current I1S -4.0 -3.0 -2.0 mA Static Saturation Voltage @ I1S=-2mA VI1SAT VS - 1.2 VS - 0.8 VS V Dynamic Source Current I1D -120 -80 -40 mA Dynamic Saturation Voltage @ I1S=-40mA VI1DSAT VS - 2.7 VS - 0.85 VS V VS PIN 13 VS Supply Voltage Range VS 4.5 20 V VS Supply Current IS 0.5 1.3 2.0 mA REF-OUT PIN 14 Output Voltage : @ 3 < VS < 5.6V & IRO = +-10µΑ @ 5.6 < VS < 18V & IRO = +-10µΑ @ 18 < VS < 40V & IRO = +-10µΑ VREF 2.7 0.5 x VS 8.5 3.3 0.56 x VS 10.8 V Maximum output current IOUT -50 50 µΑ Pull-up resistor to VCC RPU 3.0 8.0 12 kΩ 6. Measured with TXD=VCC, I1=VS, DIA & L high, no load, REF-IN-L and REF-IN-K connected to REF-OUT Table 3. Static Electrical Characteristics (continued) approximate parameter means at TA = 25°C under nominal conditions unless otherwise noted.

Analog Integrated Circuit Device Data Freescale Semiconductor 7 33199 DYNAMIC ELECTRICAL CHARACTERISTICS DYNAMIC ELECTRICAL CHARACTERISTICS Table 4. Dynamic Electrical Characteristics noted reflect the approximate parameter means at TA = 25°C under nominal conditions unless otherwise noted.

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Figure 4. TXD to DIA AC Characteristic Figure 5. DIA to TxD and L to LO AC Characteristics Figure 6. Current Source I1 AC Characteristics does this current increase to a higher value in order to charge the K Line capacitor (Cl<4nF) in a short time.

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ELECTRICAL PERFORMANCE CURVES Figure 12. REF-OUT Voltage versus VS Supply Voltage Figure 13. REF-OUT Voltage versus REF-OUT Current Figure 14. L and DIA Hysteresis versus Temperature Figure 15. L and DIA Current versus L and DIA Voltage Figure 16. DIA Saturation Voltage versus Temperature Figure 17. DIA Current Limit versus Temperature

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The MC33199 is a serial interface circuit used in diagnostic applications. It is the interface between the microcontroller and the special K and L lines of the ISO diagnostic port. The MC33199 has been designed to meet the «Diagnosis System ISO9141» specification. This product description will detail the functionality of the device (see Figure 2, 33199 Simplified Internal Block Diagram). First, the power supply and reference voltage generator will be discussed, then the paths functions between MCU, K and L lines will be detailed. A dedicated paragraph will tell about the special functionality of the I1 pin, which allow high Baud rates transmission. FUNCTIONAL PIN DESCRIPTION VCC (VCC) 5V typical power supply pin. Typical supply current is less than 1.5mA. REF-IN-L (REF-IN-L) Input reference for C2 comparator. This input can be connected directly to REF-OUT, with or without a resistor network, or to an external reference. REF-IN-K (REF-IN-K) Input reference for C1 comparator. This input can be connected directly to REF-OUT, with or without a resistor network, or to an external reference. LO (LO) Output of C2 comparator, normally connected to a micro- controller I/O. If L input > (REF-IN-L + Hyst/2) then output LO is in high state. If L< (REF-IN-L - Hyst/2) then output LO is in low state, output transistor ON. This pin is an open collector structure. A Pull up resistor should be added to VCC. Drive capability of this output is 5mA. RXD (RXD) Receive output, normally connected to a microcontroller I/ If DIA input > (REF-IN-L + Hyst/2) then output LO is in high state. If DIA < (REF-IN-L - Hyst/2) then output LO is in low state, output transistor ON. This pin has an internal pull up resistor to VCC (2Kohm typ). Drive capability of this output is 5mA TXD (TXD) Transmission input, is normally connected to a microcontroller I/O.This pin controls DIA output. If Txd is high, the output DIA transistor is OFF. If Txd is low the DIA output transistor is ON. DIA (DIA) Input / Output Diagnosis Bus line pin. This pin is an open collector structure, protected against over current and short circuit to VBAT (VS). When turning ON (TXD low), this pin will pull the Bus line to Gnd, the current into DIA will be internally limited to 60mA typ. The internal power transistor has a thermal shutdown circuit, which forces the DIA output OFF in case of over temperature. DIA is also the C1 comparator input. It is protected against both positive and negative over voltage by a 38V zener diode. This pin exhibits a constant input current of 7.5?A. GND (GND) Gnd reference for the entire device. I1 (I1) Bus source current pin. It is normally tied to DIA pin and to the Bus line. At static HIGH or LOW level Txd, the current source I1 delivers a current of 3mA (typ). Only during LOW to HIGH transition, does this current increase to a higher value in order to charge the key line capacitor (Cl<4nF) in a short time (see fig 3 and 4). L (L) Input for C2 comparator. This pin is protected against both positive and negative over voltage by a 38V zener diode. This L line is a second independent input. It can be used for wake up sequence in ISO diagnosis or as an additional input bus line. This pin exhibits a constant input current of 7.5µΑ. VS (VS) 12V typical, or Vbat supply pin for the device. This pin is protected against over voltage transients. REF-OUT (REF-OUT) Internal reference voltage generator output pin. Its value depends on Vs (Vbat) values. This output can be directly connected to REF-IN L and REF-IN-K, or through a resistor network. Maximum current capability is 50µΑ.

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Figure 24. Logic Diagram and Application Schematic

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For the most current package revision, visit www.freescale.com and perform a keyword search using the “98A” listed below. D SUFFIX EF-SUFFIX (PB-FREE) PLASTIC PACKAGE 98ASB42565B ISSUE H

Analog Integrated Circuit Device Data Freescale Semiconductor 17 33199

REVISION HISTORY

Revision Date Description of Changes 2.0 8/2006 • Implemented Revision History page

  • Added EF Pb-FREE suffix
  • Revised Figure 1, Simplified Application Drawing.
  • Converted to Freescale format and updated to the prevailing form and style
  • Removed MC33199EF/R2 and replaced with MCZ33199EF/R2 in the Ordering Information block 3.0 9/2006 • Made unit label corrections on Transmission Speed, High or Low Bit Time, LO Output :, and I1 Output @ VS-I1 > 2.7V : on page 7. 4.0 10/2006 • Removed Peak Package Reflow Temperature During Reflow (solder reflow) parameter from Maximum Ratings on page 4. Added note with instructions to obtain this information from www.freescale.com.

Rev. 4.0 Information in this document is provided solely to enable system and software implementers to use Freescale Semiconductor products. There are no express or implied copyright licenses granted hereunder to design or fabricate any integrated circuits or integrated circuits based on the information in this document. Freescale Semiconductor reserves the right to make changes without further notice to any products herein. Freescale Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Freescale Semiconductor 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 that may be provided in Freescale Semiconductor 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. Freescale Semiconductor does not convey any license under its patent rights nor the rights of others. Freescale Semiconductor 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 Freescale Semiconductor product could create a situation where personal injury or death may occur. Should Buyer purchase or use Freescale Semiconductor products for any such unintended or unauthorized application, Buyer shall indemnify and hold Freescale Semiconductor 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 Freescale Semiconductor was negligent regarding the design or manufacture of the part. Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © Freescale Semiconductor, Inc., 2006. All rights reserved. How to Reach Us: Home Page: www.freescale.com E-mail: support@freescale.com USA/Europe or Locations Not Listed: Freescale Semiconductor Technical Information Center, CH370 1300 N. Alma School Road Chandler, Arizona 85224 +1-800-521-6274 or +1-480-768-2130 support@freescale.com Europe, Middle East, and Africa: Freescale Halbleiter Deutschland GmbH Technical Information Center Schatzbogen 7

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