IFX1040 High Speed CAN-Transceiver with Stand-By Mode and Bus wake-up Data Sheet Rev. 1.0, 2011-11-4 Standard Power IFX1040 Table of Contents Table of Contents 1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Application Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 6 Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 7 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 8 Package Outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 9 Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Data Sheet 2 Rev. 1.0, 2011-11-4 High Speed CAN-Transceiver with Stand-By Mode and Bus wake-up 1 IFX1040SJ Overview Features • • • • • • • • • • • CAN data transmission rate up to 1 MBaud Compatible to ISO 11898-2 and ISO 11898-5 Low power mode with remote wake-up via CAN bus Wake signaling by RxD toggle No BUS load in stand-by mode Wide common mode range for electromagnetic immunity (EMI) Digital inputs compatible to 3.3 and 5 V logic devices Split termination to stabilize the recessive level TxD time-out function Overtemperature protection Green Product (RoHS compliant) PG-DSO-8 Description The CAN-transceiver IFX1040SJ is a monolithic integrated circuit in a PG-DSO-8 package for high speed differential mode data transmission (up to 1 Mbaud) and reception in industrial applications. It works as an interface between the CAN protocol controller and the physical bus lines compatible to ISO Standard 11898-2 and ISO Standard 11898-5. The IFX1040SJ is designed to provide an excellent passive behavior when the transceiver is switched off and a remote wake-up capability via CAN bus in low power mode. This supports networks with partially un-powered nodes. The IFX1040SJ has two operation modes, the normal and the stand-by mode. These modes can be chosen by the STB pin. If the IFX1040SJ is in stand-by mode and a message on the bus is detected, the IFX1040SJ changes the level at the RxD pin corresponding to the bus signal (wake-up flag). The IFX1040SJ is designed to withstand the severe conditions of industrial applications. Type Package Marking IFX1040SJ PG-DSO-8 1040SJ Data Sheet 3 Rev. 1.0, 2011-11-4 IFX1040 Pin Configuration 2 Pin Configuration IFX1040 TxD 1 8 STB GND 2 7 CANH VCC 3 6 CANL RxD 4 5 SPLIT Figure 1 Pin Configuration IFX1040SJ (top view) Table 1 Pin Definitions and Functions IFX1040SJ Pin No. Symbol Function 1 TxD CAN transmit data input; 20 kΩ pull-up, LOW in dominant state 2 GND Ground 3 VCC 5 V Supply input; 100 nF decoupling capacitor required 4 RxD CAN receive data output; LOW in dominant state, 5 SPLIT Split termination output; to support the recessive voltage level of the bus lines 6 CANL Low line I/O; LOW in dominant state 7 CANH High line I/O; HIGH in dominant state 8 STB Mode Control Input; Internal pull-up, see Figure 3 Data Sheet 4 Rev. 1.0, 2011-11-4 IFX1040 Block Diagram 3 Block Diagram IFX1040 VCC 3 Wake-Up Logic 8 Mode Control Logic STB VCC CANH CANL 7 6 Driver Output Stage Temp.Protection 1 + timeout TxD = Receiver MUX SPLIT GND Figure 2 Data Sheet 4 RxD 5 2 Block Diagram IFX1040SJ 5 Rev. 1.0, 2011-11-4 IFX1040 Application Information 4 Application Information The IFX1040SJ has two operation modes, the normal and the standby mode. These modes can be controlled with the STB pin (see Figure 3, Table 2). The STB pin has an implemented pull-up, so if there is no signal applied to STB or STB = HIGH, the standby mode is activated. To transfer the IFX1040SJ into the normal mode, STB has to be switched to LOW. Normal STB = 0 Stand-By STB = 1 Figure 3 Mode State Diagram Table 2 Truth Table Mode STB Event RxD BUS Termination Normal low bus dominant low VCC/2 bus recessive high wake-up via CAN bus detected low/high1) no wake-up detected high Stand by high GND 1) Signal at RxD changes corresponding to the bus signal during stand by mode. See Figure 6 Normal Mode This mode is designed for the normal data transmission/reception within the HS-CAN network. Transmission The signal from the μC is applied to the TxD input of the IFX1040SJ. Now the bus driver switches the CANH/L output stages to transfer this input signal to the CAN bus lines. Data Sheet 6 Rev. 1.0, 2011-11-4 IFX1040 Application Information TxD Time-out Feature If the TxD signal is dominant for a time t > tTxD the TxD time-out function deactivates the transmitter of the IFX1040. This is realized to prevent the bus from being blocked permanently dominant due to an error like in case of a malfunctioning microcontroller. The transmission is released again, after a rising edge at TxD has been detected. As a result of the TxD Time-Out function, the minimum bit rate is limited. The minimum achievable bit rate can be calculated by the maximum number of consecutive dominant bits allowed in the system. It is given by the maximum number of dominant bits allowed in the system divided by the TxD permanent dominant disable time t_TxD. Reduced Electromagnetic Emission The bus driver has an implemented control to reduce the electromagnetic emission (EME). This is achieved by controlling the symmetry of the slope, resp. of CANH and CANL. Overtemperature The driver stages are protected against overtemperature. Exceeding the shutdown temperature results in deactivation of the driving stages at CANH/L. To avoid a bit failure after cooling down, the signals can be transmitted again only after a dominant to recessive edge at TxD. Figure 4 shows the way how the transmission stage is deactivated and activated again. First an over temperature condition causes the transmission stage to deactivate. After the over temperature condition is no longer present, the transmission is only possible after the TxD signal has changed to recessive level. Failure Overtemp VCC Overtemperature GND t TxD VCC GND t BUS VDIFF (CANH-CANL) R D R t Figure 4 Release of the Transmission after Overtemperature Reception The analog CAN bus signals are converted into a digital signal at RxD via the differential input receiver. The RxD signal is switched to RxD output pin via the multiplexer (MUX), see Figure 2. In normal mode the split pin is used to stabilize the recessive common mode signal. Data Sheet 7 Rev. 1.0, 2011-11-4 IFX1040 Application Information Standby Mode The standby mode is designed to switch the IFX1040SJ into a low power mode with minimum current consumption. The driving stages and the receiver are deactivated. Only the relevant circuitry to guarantee a correct handling of the CAN bus wake-up is still active. This wake-up receiver is also designed to show an excellent immunity against electromagnetic noise (EMI). Change into Standby Mode during CAN Bus Failure It is possible to change from normal mode into the standby mode if the bus is dominant due to a bus failure without setting the RxD wake flag to LOW. The advantage is, that the IFX1040SJ can be kept in the standby mode even if a bus failure occurs. Figure 5 shows this mechanism in detail. During a bus network failure, the bus might be dominant. Normal communication is not possible until the failure is removed. To reduce the current consumption, it makes sense to switch over to standby mode. This is possible with the IFX1040SJ. If the dominant signal switches back to recessive level, e.g. failure removed, a wake-up via CAN bus (recessive to dominant signal detected) is possible. BUS VDIFF (CANH-CANL) VCC D R D t STB (Mode) VCC Normal Mode (STB = LOW) Standby Mode (STB = HIGH) RxD tWU1 tWU2 t VCC t Figure 5 Data Sheet Go-To Standby Mode during Bus Dominant Condition 8 Rev. 1.0, 2011-11-4 IFX1040 Application Information Wake-up via CAN Message During standby mode, a dominant CAN message on the bus longer than the filtering time t > tWU1, leads to the activation of the wake-up. The wake-up during standby mode is signaled with the RxD output pin. A dominant signal longer t > tWU1 on the CAN bus switches the RxD level to LOW, with a following recessive signal on the CAN bus longer t > tWU2 the RxD level is switched to high, see Figure 6. The μC is able to detect this change at RxD and switch the transceiver into the normal mode. VCA N CANH V CC VCC /2 CANL t BUS VDIFF (CA NH-CA NL) Rec es s iv e to Dominant VDIFF(d) VRxD V CC GND VDIFF(d) tWU2 tWU1 VDIFF(d) VDIFF(d) t 0.8 x VCC 0.2 x VCC t AET03395_TO1.VSD Figure 6 Data Sheet Wake-up behavior 9 Rev. 1.0, 2011-11-4 IFX1040 Application Information Split Circuit The split circuitry is activated during normal mode and deactivated (SPLIT pin floating) during standby mode. The SPLIT pin is used to stabilize the recessive common mode signal in normal mode. This is realized with a stabilized voltage of 0.5 VCC at SPLIT. A correct application of the SPLIT pin is shown in Figure 7. The split termination for the left and right node is realized with two 60 Ω resistances and one 10 nF capacitor. The center node in this example is a stub node and the recommended value for the split resistances is 1.5 kΩ. CANH CANH IFX1040 60 Ω Split Termination SPLIT 10 nF IFX1040 60 Ω CAN Bus Split Termination 60 Ω 60 Ω SPLIT 10 nF CANL CANL 10 nF Split Termination at Stub 1.5 kΩ CANH 1.5 kΩ SPLIT CANL IFX1040 Figure 7 Application of the SPLIT Pin for Normal Nodes and one Stub Node Other Features Fail Safe If the device is supplied but there is no signal at the digital inputs, the TxD and STB have an internal pull-up path, to prevent the transceiver to switch into the normal mode or send a dominant signal on the bus. Un-supplied Node The CANH/CANL pins remain high ohmic, if the transceiver is un-supplied. Data Sheet 10 Rev. 1.0, 2011-11-4 IFX1040 Electrical Characteristics 5 Electrical Characteristics Table 3 Absolute Maximum Ratings Parameter Symbol Limit Values Unit Remarks Min. Max. VCC VCANH/L VCAN diff -0.3 5.5 V – -32 40 V – -40 40 V CANH - CANL < |40 V| CANH - SPLIT < |40 V| CANL - SPLIT < |40 V| VSPLIT VI VESD -27 40 V – Voltages Supply voltage CAN bus voltage (CANH, CANL) CAN bus differential voltage CANH, CANL, SPLIT Input voltage at SPLIT Logic voltages at STB, TxD, RxD Electrostatic discharge voltage at CANH, CANL, SPLIT vs. GND Electrostatic discharge voltage -0.3 VCC V 0 V < VCC < 5.5 V -6 6 kV Human Body Model (100 pF via 1.5 kW) VESD -2 2 kV Human Body Model (100 pF via 1.5 kW) Tj Tstg -40 150 °C – -50 150 °C – Temperatures Junction Temperature Storage Temperature Note: Maximum ratings are absolute ratings; exceeding any one of these values may cause irreversible damage to the integrated circuit. 5.1 Operating Range Table 4 Operating Range Parameter Symbol Limit Values Unit Remarks Min. Max. VCC Tj 4.75 5.25 V – -40 125 °C – Rthj-a – 185 K/W 1) Thermal shutdown temperature TjsD 150 190 °C – Thermal shutdown hyst. ΔT – 10 K – Supply voltage Junction temperature Thermal Resistances Junction ambient Thermal Shutdown (junction temperature) 1) Calculation of the junction temperature Tj = Tamb + P × Rthj-a Data Sheet 11 Rev. 1.0, 2011-11-4 IFX1040 Electrical Characteristics Table 5 Electrical Characteristics 4.75 V < VCC < 5.25 V; RL = 60 Ω; -40 °C < Tj < 125 °C; all voltages with respect to ground; positive current flowing into pin; unless otherwise specified. Parameter Symbol Limit Values Unit Remarks Min. Typ. Max. ICC – 6 10 Current consumption ICC – 45 70 mA dominant state; VTxD = 0 V Current consumption ICC,stb – 20 30 µA stand-by mode; TxD = high IRD,H – -4 -2 mA VRD = 0.8 × VCC – -100 – µA stand-by mode IRD,L ISC,RxD 2 4 – mA VRD = 0.2 × VCC – 15 20 mA – HIGH level input voltage threshold VTD,H 2.0 – – V recessive state LOW level input voltage threshold VTD,L – – 0.8 V dominant state TxD pull-up resistance RTD 10 20 40 kΩ – TxD input hysteresis VTD hys – 200 – mV – HIGH level input voltage threshold VSTB,H 2.0 – – V normal mode LOW level input voltage threshold VSTB,L – – 0.8 V receive-only mode STB pull-up resistance RSTB 10 20 40 kΩ – STB input hysteresis VSTB hys – 200 – mV – VSPLIT 0.3 × VCC 0.5 × VCC 0.7 × VCC V normal mode; -500 μA < ISPLIT < 500 μA VSPLIT 0.45 0.5 × × VCC VCC 0.55× VCC V normal mode; no Load Leakage current ISPLIT -5 0 5 μA standby mode; -22 V < VSPLIT < 35 V SPLIT output resistance RSPLIT – 600 – Ω – Differential receiver threshold voltage, normal mode Vdiff,rdN – 0.8 0.9 V recessive to dominant Vdiff,drN 0.5 0.6 – V dominant to recessive Differential receiver threshold, low power mode Vdiff,rdLP 0.9 1.15 Vdiff,drLP 0.4 0.8 Common Mode Range CMR -12 – Differential receiver hysteresis Vdiff,hys – CANH, CANL input resistance Ri Differential input resistance Rdiff Current Consumption Current consumption mA recessive state; VTxD = VCC Receiver Output RxD HIGH level output current LOW level output current Short circuit current Transmission Input TxD Stand By Input (pin STB) Split Termination Output (pin SPLIT) Split output voltage Bus Receiver Data Sheet V recessive to dominant V dominant to recessive 12 V VCC = 5 V 200 – mV – 10 20 30 kΩ recessive state 20 40 60 kΩ recessive state 12 Rev. 1.0, 2011-11-4 IFX1040 Electrical Characteristics Table 5 Electrical Characteristics (cont’d) 4.75 V < VCC < 5.25 V; RL = 60 Ω; -40 °C < Tj < 125 °C; all voltages with respect to ground; positive current flowing into pin; unless otherwise specified. Parameter Symbol Limit Values Min. Typ. Max. Unit Remarks Bus Transmitter CANL/CANH recessive output voltage VCANL/H 2.0 2.5 3.0 V VTxD = VCC; no load CANH, CANL recessive output voltage difference Vdiff -500 – 50 mV VTxD = VCC; no load CANL dominant output voltage VCANL 0.5 – 2.25 V VTxD = 0 V; VCC = 5 V CANH dominant output voltage VCANH 2.75 – 4.5 V VTxD = 0 V; VCC = 5 V CANH, CANL dominant output voltage difference Vdiff = VCANH - VCANL Vdiff 1.5 – 3.0 V VTxD = 0 V; VCC = 5 V CANL short circuit current ICANLsc 50 80 200 mA VCANLshort = 18 V CANH short circuit current ICANHsc -200 -80 -50 mA VCANHshort = 0 V Leakage current ICANH,L,lk - - -5 μA VCC = 0 V; 0 V < VCANH,L < 5 V Dynamic CAN-Transceiver Characteristics Propagation delay TxD-to-RxD LOW (recessive to dominant) td(L),TR – 150 255 ns CL = 47 pF; RL = 60 Ω; VCC = 5 V; CRxD = 15 pF Propagation delay TxD-to-RxD HIGH (dominant to recessive) td(H),TR – 150 255 ns CL = 47 pF; RL = 60 Ω; VCC = 5 V; CRxD = 15 pF Propagation delay TxD LOW to bus dominant td(L),T – 50 120 ns CL = 47 pF; RL = 60 Ω; VCC = 5 V Propagation delay TxD HIGH to bus recessive td(H),T – 50 120 ns CL = 47 pF; RL = 60 Ω; VCC = 5 V Propagation delay bus dominant to RxD LOW td(L),R – 100 135 ns CL = 47 pF; RL = 60 Ω; VCC = 5 V; CRxD = 15 pF Propagation delay bus recessive to RxD HIGH td(H),R – 100 135 ns CL = 47 pF; RL = 60 Ω; VCC = 5 V; CRxD = 15 pF Min. dominant time for bus wake-up signal (RxD high to low) tWU1 0.75 3 5 μs tWU1 = td(L),R + tWU see Figure 6 Data Sheet 13 Rev. 1.0, 2011-11-4 IFX1040 Electrical Characteristics Table 5 Electrical Characteristics (cont’d) 4.75 V < VCC < 5.25 V; RL = 60 Ω; -40 °C < Tj < 125 °C; all voltages with respect to ground; positive current flowing into pin; unless otherwise specified. Parameter Symbol Limit Values Min. Typ. Max. Unit Remarks Min. recessive time for bus wake-up signal (RxD low to high) tWU2 0.75 3 5 μs tWU2 = td(H),R + tWU see Figure 6 TxD permanent dominant disable time tTxD 0.3 – 1.0 ms – Data Sheet 14 Rev. 1.0, 2011-11-4 IFX1040 Diagrams 6 Diagrams STB 7 TxD CANH SPLIT 47 pF 6 5 4 15 pF CANL GND 2 Data Sheet 1 60 Ω RxD Figure 8 8 VCC 3 5V 100 nF Test Circuit for Dynamic Characteristics 15 Rev. 1.0, 2011-11-4 IFX1040 Diagrams VTxD VμC GND VDIFF td(L), T td(H), T t VDIFF(d) VDIFF(r) VRxD td(L), R t td(H), R VμC 0.8VμC 0.2VμC GND td(L), TR td(H), TR t AET02926 Figure 9 Data Sheet Timing Diagrams for Dynamic Characteristics 16 Rev. 1.0, 2011-11-4 IFX1040 Application 7 Application 4.7 nF 60 Ω VIN 60 Ω CAN Bus 51 µH IFX1040 SJ 7 6 5 CANH STB CANL RxD SPLIT TxD GND 2 VCC 8 µP with On Chip CAN Module 4 1 e.g. C164 C C167C 3 100 nF 100 nF GND e.g. IFX25001 VI 22 + µF GND 100 nF 51 µH 5V VQ + 22 µF ECU IFX1040 SJ 7 6 5 CANH STB CANL RxD SPLIT TxD GND VCC 8 µP with On Chip CAN Module 4 1 e.g. C164 C C167C 3 100 nF 2 100 nF GND e.g. IFX25001 60 Ω Figure 10 Data Sheet 60 Ω 4.7 nF 1) VI 22 + µF 100 nF 5V VQ GND + 22 µF ECU Application Circuit 17 Rev. 1.0, 2011-11-4 IFX1040 Package Outlines 8 Package Outlines 1.27 0.1 0.41 +0.1 -0.05 .01 0.2 +0.05 -0 C 0.64 ±0.25 0.2 M A C x8 8 5 Index Marking 1 4 5 -0.21) 8˚ MAX. 4 -0.21) 1.75 MAX. 0.1 MIN. (1.5) 0.33 ±0.08 x 45˚ 6 ±0.2 A Index Marking (Chamfer) 1) Figure 11 Does not include plastic or metal protrusion of 0.15 max. per side PG-DSO-8 (Plastic Dual Small Outline), lead free version Green Product (RoHS compliant) To meet the world-wide customer requirements for environmentally friendly products and to be compliant with government regulations the device is available as a green product. Green products are RoHS-Compliant (i.e Pb-free finish on leads and suitable for Pb-free soldering according to IPC/JEDEC J-STD-020). Data Sheet 18 Rev. 1.0, 2011-11-4 IFX1040 Revision History 9 Revision History Revision Date Changes 1.0 2011-11-04 Data Sheet Data Sheet 19 Rev. 1.0, 2011-11-4 Edition 2011-11-4 Published by Infineon Technologies AG 81726 Munich, Germany © 2011 Infineon Technologies AG All Rights Reserved. Legal Disclaimer The information given in this document shall in no event be regarded as a guarantee of conditions or characteristics. With respect to any examples or hints given herein, any typical values stated herein and/or any information regarding the application of the device, Infineon Technologies hereby disclaims any and all warranties and liabilities of any kind, including without limitation, warranties of non-infringement of intellectual property rights of any third party. Information For further information on technology, delivery terms and conditions and prices, please contact the nearest Infineon Technologies Office (www.infineon.com). Warnings Due to technical requirements, components may contain dangerous substances. For information on the types in question, please contact the nearest Infineon Technologies Office. The Infineon Technologies component described in this Data Sheet may be used in life-support devices or systems and/or automotive, aviation and aerospace applications or systems only with the express written approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure of that lifesupport automotive, aviation and aerospace device or system or to affect the safety or effectiveness of that device or system. Life support devices or systems are intended to be implanted in the human body or to support and/or maintain and sustain and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons may be endangered.