Features • • • • • • • • • • Usable for Automotive 12V/24V and Industrial Applications Maximum High-speed Data Transmissions up to 1 MBaud Fully Compatible with ISO 11898 Controlled Slew Rate Standby Mode TXD Input Compatible to 3.3V Short-circuit Protection Overtemperature Protection High Voltage Bus Lines Protection, –40V to +40V High Speed Differential Receiver Stage with a Wide Common Mode Range, –10V to +10V, for High Electromagnetic Immunity (EMI) • Fully Controlled Bus Lines, CANH and CANL to Minimize Electromagnetic Emissions (EME) • High ESD Protection at CANH, CANL HBM 8 kV, MM 300V High-speed Can Transceiver ATA6660 1. Description The ATA6660 is a monolithic circuit based on the Atmel®’s Smart Power BCD60-III technology. It is especially designed for high speed CAN-Controller (CAN-C) differential mode data transmission between CAN-Controllers and the physical differential bus lines. Figure 1-1. Block Diagram 3 VCC 1 TXD TXD Input Stage Overtemperature and Short Circuit Protection Driver 7 CANH 8 RS Constant Slope/ Standby 4 RXD Receiver 6 CANL 5 VREF Reference Voltage 0.5*VCC 2 GND 4582E–AUTO–02/08 2. Pin Configuration Figure 2-1. Pinning SO8 TXD GND VCC RXD Table 2-1. 2 1 2 3 4 8 7 6 5 RS CANH CANL VREF Pin Description Pin Symbol Function 1 TXD Transmit data input 2 GND Ground 3 VCC Supply voltage 4 RXD Receive data output 5 VREF Reference voltage output 6 CANL Low level CAN voltage input/output 7 CANH High level CAN voltage input/output 8 RS Switch Standby Mode/Normal Mode ATA6660 4582E–AUTO–02/08 ATA6660 3. Functional Description The ATA6660 is a monolithic circuit based on Atmel’s Smart Power BCD60-III technology. It is especially designed for high-speed differential mode data transmission in harsh environments like automotive and industrial applications. Baudrate can be adjusted up to 1 Mbaud. The ATA6660 is fully compatible to the ISO11898, the developed standard for high speed CAN-C (Controller Area Network) communication. 3.1 Voltage Protection and ESD High voltage protection circuitry on both line pins, CANH (pin 7) and CANL (pin 6), allow bus line voltages in the range of –40V to +40V. ESD protection circuitry on line pins allow HBM = 8 kV, MM = 300V. The implemented high voltage protection on bus line output/input pins (7/6) makes the ATA6660 suitable for 12V automotive applications as well as 24V automotive applications. 3.2 Slope Control A fixed slope is adjusted to prevent unsymmetrical transients on bus lines causing EMC problems. Controlled bus lines, both CANH and CANL signal, will reduce radio frequency interference to a minimum. In well designed bus configurations the filter design costs can be reduced dramatically. 3.3 Overcurrent Protection In the case of a line shorts, like CANH to GND, CANL to VCC, integrated short current limitation allows a maximum current of ICANH_SC or ICANL_SC. If junction temperature rises above 165°C an internal overtemperature protection circuitry shuts down both output stages, the receiver will stay activated. 3.4 Standby Mode The ATA6660 can be switched to Standby Mode by forcing the voltage VRS > 0.87 × VCC. In Standby Mode the supply current will reduce dramatically, supply current during Standby Mode is typical 600 µA (IVCC_stby). Transmitting data function will not be supported, but the opportunity will remain to receive data. A high-speed comparator is listening for activities on the bus. A dominant bus signal will force the output RXD to a low level in typical tdRXDL = 400 ns. If the RS pin is not connected, causing through a broken connection to the controller, the ATA6660 will switch to Standby Mode automatically. 3.5 High-speed Receiver In Normal Mode a fast receiver circuitry combined with a resistor network is able to detect differential bus line voltages Vrec_th > 0.9V as dominant bit, differential bus line voltages Vrec_th < 0.5V as recessive bit. The wide receiver common mode range, –10V to +10V, combined with a symmetrical differential receiver stage offers high immunity against electromagnetic interference. A typical hysteresis of 70 mV is implemented. Dominant differential bus voltages forces RXD output (pin 4) to low level, recessive differential bus voltages to high level. 3 4582E–AUTO–02/08 3.6 TXD Input The input stage pin 1 (TXD) is compatible for 3.3V output levels from new controller families. Pull-up resistance (25 kΩ) forces the IC to Recessive Mode, if TXD-Pin is not connected. TXD low signal drives the transmitter into dominant state. 3.7 Transmitter A integrated complex compensation technique allows stable data transmission up to 1 MBaud. Low level on TXD input forces bus line voltages CANH to 3.5V, CANL to 1.5V with a termination resistor of 60Ω. In the case of a line short circuit, like CANH to GND, CANL to VCC, integrated short current limitation circuitry allows a maximum current of 150 mA. If junction temperature rises above typical 163°C an internal overtemperature protection shuts down both output stages, the Receive Mode will stay activated. 3.8 Split Termination Concept With a modified bus termination (see Figure 8-3 on page 10) a reduction of emission and a higher immunity of the bus system can be achieved. The one 120Ω resistor at the bus line end nodes is split into two resistors of equal value, i.e., two resistors of 60Ω. The resistors for the stub nodes is recommended with two resistors of 1.3 kΩ. (for example 8 stub nodes and 2 bus end nodes) Notice: The bus load of all the termination resistors has to stay within the range of 50Ω to 65Ω. The common mode signal at the centre tap of the termination is connected to ground via a capacitor of e.g., Csplit = 10 nF to 100 nF. A separate ground lead to the ground pin of the module connector is recommended. 4 ATA6660 4582E–AUTO–02/08 ATA6660 4. Absolute Maximum Ratings Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Parameters Symbol Min. Max. Unit VCC –0.3 +6 V VTXD, VREF, VRS, VRXD –0.3 VCC +0.3 V –40.0 +40.0 V –150 +100 V –55 +150 °C –40 +125 °C Supply voltage DC voltage at pins 1, 4, 5 and 8 Conditions 0V < VCC < 5.25V; no time limit VCANH, VCANL DC voltage at pins 6 and 7 Transient voltage at pins 6 and 7 Storage temperature TStg Operating ambient temperature Tamb ESD classification All pins HBM ESD S.5.1 MM JEDEC A115A ESD classification Pin 6, 7 versus pin 2 HBM 1.5 kΩ, 100 pF MM 0Ω, 200 pF ±3000 ±200 V V ±8000 ±300 V V 5. Thermal Resistance Parameters Thermal resistance from junction to ambient Symbol Value Unit RthJA 160 K/W 6. Truth Table VCC TXD RS CANH 4.75V to 5.25V 0 < 0.3 × VCC 3.5V 0.5 × VCC 4.75V to 5.25V 1 (or floating) < 0.3 × VCC 0.5 × VCC 4.75V to 5.25V X > 0.87 × VCC 0.5 × VCC CANL Bus State RXD 1.5V Dominant 0 0.5 × VCC Recessive 1 Recessive 1 7. RS (Pin 8) Functionality Slope Control Mode Voltage and Current Levels VRS > 0.87 × VCC Standby IRS < | 10 µA | VRS < 0.3 × VCC Constant slope control IRS ≤ 500 µA 5 4582E–AUTO–02/08 8. Electrical Characteristics VCC = 4.75V to 5.25V; Tamb = –40°C to +125°C; RBus = 60Ω; unless otherwise specified. All voltages referenced to ground (pin 2); positive input current. No. 1 Parameters Test Conditions Pin Symbol Min. Typ. Max. Unit Type* Supply Current 1.1 Supply current dominant VTXD = 0V VRS = 0V 3 Ivcc_dom 45 60 mA A 1.2 Supply current recessive VTXD = 5V VRS = 0V 3 Ivcc_rec 10 15 mA A 1.3 Supply current standby VRS = 5V 3 Ivcc_stby 600 980 µA A 2 Transmitter Data Input TXD 2.1 HIGH level input voltage VTXD = 5V VRS = 0V 1 VTXDH 2 VCC + 0.3 V A 2.2 LOW level input voltage VTXD = 0V VRS = 0V 1 VTXDL –0.3 +1 V A 2.3 HIGH level input current VTXD = VCC 1 IIH –1 0 µA A 2.4 LOW level input voltage VTXD = 0V 1 IIL –500 -50 µA A 4 VRXDH 0.8 × VCC VCC V A 3 Receiver Data Output RXD 3.1 High level output voltage 3.2 Low level output voltage IRXD = 1 mA IRXD = –100 µA 3.3 Short current at RXD VTXD = 5V VRXD = 0V 3.4 Short current at RXD VTXD = 0V VRXD = 5V 4 4 VRXDL 0 0.2 × VCC V A 4 IRXDs1 –3 -1 mA A 4 IRXDs2 2 6 mA A Reference Output Voltage VREF 4.1 Reference output voltage Normal Mode VRS = 0V; –50 µA < I5 < 50 µA 5 Vref_no 0.45 VCC 0.55 VCC V A 4.2 Reference output voltage Standby Mode VRS = 5 V; –5 µA < I5 < 5 µA 5 Vref_stby 0.4 × VCC 0.6 VCC V A 3.0 V A +5 mA A 5 DC Bus Transmitter CANH; CANL 5.1 Recessive bus voltage VTXD = VCC; no load 6, 7 VCANH; VCANL 2.0 5.2 IO(CANH)(reces) IO(CANL)(reces) –40V < VCANH; VCANL < 40V; 0V < VCC < 5.25V 6, 7 IO_reces –5 5.3 CANH output voltage dominant VTXD = 0V 6, 7 VCANH 2.8 3.5 4.5 V A 5.4 CANL output voltage dominant VTXD = 0V 6, 7 VCANL 0.5 1.5 2.0 V A 2.5 *) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter 6 ATA6660 4582E–AUTO–02/08 ATA6660 8. Electrical Characteristics (Continued) VCC = 4.75V to 5.25V; Tamb = –40°C to +125°C; RBus = 60Ω; unless otherwise specified. All voltages referenced to ground (pin 2); positive input current. No. Parameters Test Conditions Pin Symbol Min. Typ. Max. Unit Type* 5.5 Differential bus output voltage (VCANH – VCANL) VTXD = 0V; RL = 45Ω to 60Ω; VCC = 4.9V 6, 7 Vdiffdom 1.5 2 3.0 V A VTXD = VCC; no load 6, 7 Vdiffrec –500 +50 mV A –100 mA A 5.6 5.7 Short-circuit CANH current VCANH = –10V TXD = 0V 6, 7 ICANH_SC –35 5.8 Short-circuit CANL current VCANL = 18V TXD = 0V 6, 7 ICANL_SC 50 - 150 mA A 6 DC Bus Receiver CANH; CANL 6.1 Differential receiver threshold voltage Normal Mode –10V < VCANH < +10V –10V < VCANL < +10V 6, 7 Vrec_th 0.5 0.7 0.9 V A 6.2 Differential receiver threshold voltage Standby Mode VRS = VCC 6, 7 Vrec_th_stby 0.5 0.7 0.9 V A 6.3 Differential input hysteresis 6, 7 Vdiff(hys) mV A 6.4 CANH and CANL common mode input resistance 6, 7 Ri 5 15 25 kΩ A 6.5 Differential input resistance 6, 7 Rdiff 10 30 100 kΩ A 6.6 Matching between CANH and CANL common mode input resistance 6, 7 Ri_m –3 +3 % A 6.7 CANH, CANL input capacitance 6, 7 Ci 20 pF D 6.8 Differential input capacitance 6, 7 Cdiff 10 pF D 6.9 CANH, CANL input leakage input current 6, 7 ILI(CANH); ILI(CANL) 250 µA A 7 Thermal Shut-down VCC = 0V VCANH = 3.5V VCANL = 1.5V 70 7.1 Shut-down junction temperature for CANH/CANL TJ(SD) 150 163 175 °C B 7.2 Switch on junction temperature for CANH/CANL TJ(SD) 140 154 165 °C B 7.3 Temperature hysteresis THys K B 10 *) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter 7 4582E–AUTO–02/08 8. Electrical Characteristics (Continued) VCC = 4.75V to 5.25V; Tamb = –40°C to +125°C; RBus = 60Ω; unless otherwise specified. All voltages referenced to ground (pin 2); positive input current. No. 8 Parameters Test Conditions Pin Symbol Min. Typ. Max. Unit Type* Timing Characteristics Normal Mode, VRS ≤ 0.3 × VCC (see Figure 8-1 on page 9) 8.1 Delay TXD to bus active VRS = 0V td(TXD-BUS_ON) 120 180 ns A 8.2 Delay TXD to bus inactive VRS = 0V td(TXD-BUS_OFF) 50 100 ns A 8.3 Delay TXD to RXD, recessive to dominant VRS = 0V td_activ(TXD-RXD) 200 420 ns A 8.4 Delay TXD to RXD, dominant to recessive VRS = 0V td_inactiv(TXD-RXD) 180 460 ns A 8.5 Difference between Delay TXD to RXD dominant to Delay recessive tdiff = td_activ(TXD-RXD) – td_inactiv(TXD-RXD) 80 ns A 450 ns A 9 6, 7 tdiff –280 Timing Characteristics Standby Mode VRS ≥ 0.87 × VCC 9.1 Bus dominant to RXD low in Standby Mode 9.2 Wake up time after Standby Mode (time TXD = 0V delay between Standby VRS from 0V to VCC to Normal Mode and to bus dominant) VRS = VCC 4 tdRxDL 6, 7 Twake_up 2 µs A 10.1 Input voltage for Normal VRS = VCC Mode 8 VRS 0.3 × VCC V A 10.2 Input current for Normal VRS = 0V Mode 8 IRS –700 µA A 10.3 Input voltage for Standby Mode 8 Vstby 0.87 × VCC V A 10 300 Standby/Normal Mode Selectable via RS (Pin 8) *) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter 8 ATA6660 4582E–AUTO–02/08 ATA6660 Figure 8-1. Timing Diagrams HIGH TXD LOW Dominant CANH CANH CANL Dominant CANL Dominant (Bus Active) 0.9V Vdiff 0.5V Recessive (Bus Inactive) HIGH 0.7VCC RXD 0.3VCC LOW t(TXD_bus_on) td(TXD_bus_off) td_activ(TXD_RXD) td_inactiv(TXD_RXD) 9 4582E–AUTO–02/08 Figure 8-2. Test Circuit for Timing Characteristics TXD GND VCC + 5V RXD C = 47 µF Figure 8-3. C = 100 nF 1 8 2 7 3 ATA6660 6 5 4 RS CANH CANL RL = 62Ω CL = 100pF Vref C = 15 pF Bus Application with Split Termination Concept Bus Line End Node RS 7 CANH 6 CANL 5 + 5V 2 GND 8 TXD 1 CAN Controller Vref ATA6660 3 VCC 4 RXD CSPLIT = 10 nF RL = 60Ω RL = 60Ω Bus Line Stub Node RL = 1.3 kΩ C = 15 pF C = 47 µF C = 100 nF RL = 1.3 kΩ 8 RS 7 CANH 6 CANL 5 VCC Vref ATA6660 3 + 5V 2 GND 1 TXD CAN Controller 4 RXD CSPLIT = 10 nF RL = 60Ω C = 47 µF C = 100 nF 10 RL = 60Ω C = 15 pF CSPLIT = 10 nF Bus Line End Node ATA6660 4582E–AUTO–02/08 ATA6660 9. Ordering Information Extended Type Number Package Remarks ATA6660-TAPY SO8 Can transceiver, Pb-free, 1k, taped and reeled ATA6660-TAQY SO8 Can transceiver, Pb-free, 4k, taped and reeled 10. Package Information Package: SO 8 Dimensions in mm 5±0.2 4.9±0.1 0.1+0.15 1.4 0.2 3.7±0.1 0.4 1.27 3.8±0.1 6±0.2 3.81 8 5 technical drawings according to DIN specifications 1 4 Drawing-No.: 6.541-5031.01-4 Issue: 1; 15.08.06 11 4582E–AUTO–02/08 11. Revision History Please note that the following page numbers referred to in this section refer to the specific revision mentioned, and not to this document. 12 Revision No. History 4582E-BCD-02/08 • Put datasheet in the newest template • Section 9 “Ordering Information” on page 11 changed 4582D-BCD-06/06 • Put datasheet in the newest template • Pb-free logo on page 1 deleted • Section 9 “Ordering Information” on page 11 changed 4582C-BCD-09/05 • • • • Put datasheet in the newest template Pb-free logo on page 1 added Heading rows on Table “Absolute Maximum Ratings” on page 5 added Section 9 “Ordering Information” on page 11 changed ATA6660 4582E–AUTO–02/08 Headquarters International Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131 USA Tel: 1(408) 441-0311 Fax: 1(408) 487-2600 Atmel Asia Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimshatsui East Kowloon Hong Kong Tel: (852) 2721-9778 Fax: (852) 2722-1369 Atmel Europe Le Krebs 8, Rue Jean-Pierre Timbaud BP 309 78054 Saint-Quentin-en-Yvelines Cedex France Tel: (33) 1-30-60-70-00 Fax: (33) 1-30-60-71-11 Atmel Japan 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan Tel: (81) 3-3523-3551 Fax: (81) 3-3523-7581 Technical Support [email protected] Sales Contact www.atmel.com/contacts Product Contact Web Site www.atmel.com Literature Requests www.atmel.com/literature Disclaimer: The information in this document is provided in connection with Atmel products. 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