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ATA6616C/ATA6617C LIN SiP (System-in-Package) Solution Including LIN Transceiver, 5V/50 mA Voltage Regulator, Window Watchdog and AVR ATtiny87 (ATtiny167) Automotive Microcontroller with 8K (16K) Flash Memory
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ATA6616C/ATA6617C LIN SiP (System-in-Package) Solution Including LIN Transceiver, 5V/50 mA Voltage Regulator, Window Watchdog and AVR ATtiny87 (ATtiny167) Automotive Microcontroller with 8K (16K) Flash Memory - 1

ATA6616C/ATA6617C 8K/16K Flash Microcontroller with LIN Transceiver, 5V Regulator and Watchdog DATASHEET General Features ● Single-package high performance, low power AVR® 8-bit microcontroller with LIN transceiver, 5V regulator (85mA current capability) and watchdog ● Very low current consumption in sleep mode ● 8Kbytes/16Kbytes flash memory for application program (Atmel® ATA6616C/ATA6617C) ● Supply voltage up to 40V ● Operating voltage: 5V to 27V ● Temperature range: Tcase –40°C to +125°C ● QFN38, 5mm 7mm package Description Atmel ATA6616C/ATA6617C is a System-in-Package (SiP) product, which is particularly suited for complete LIN-bus node applications. It consists of two ICs in one package supporting highly integrated solutions for in-vehicle LIN networks. The first chip is the LINsystem-basis-chip (LIN-SBC) ATA6624, which has an integrated LIN transceiver, a 5V regulator (85mA) and a window watchdog. The second chip is an automotive microcontroller from Atmel’s series of AVR 8-bit microcontroller with advanced RISC architecture, the Atmel ATtiny87 with 8-Kbytes and the Atmel ATtiny167 with 16-Kbytes flash memory. All pins of the LIN system basis chip as well as all pins of the AVR microcontroller are bonded out to provide customers the same flexibility for their applications as they have when using discrete parts. In Section 1. “Atmel ATA6616C/ATA6617C LIN System in Package Solution (SIP)” on page 3 you will find the pin configuration for the complete SiP. In Section 3. “LIN System-basischip Block” on page 7 the LIN SBC is described, and in Section 4. “Atmel ATtiny87/ATtiny167 Microcontroller Block for Atmel ATA6616C/ATA6617C” on page 26 the AVR is described in detail.

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ATA6616C/ATA6617C LIN SiP (System-in-Package) Solution Including LIN Transceiver, 5V/50 mA Voltage Regulator, Window Watchdog and AVR ATtiny87 (ATtiny167) Automotive Microcontroller with 8K (16K) Flash Memory - 2

Application Diagram LIN-bus Atmel ATA6616C/ATA6617C MCU Atmel ATtiny 87/167

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ATA6616C/ATA6617C LIN SiP (System-in-Package) Solution Including LIN Transceiver, 5V/50 mA Voltage Regulator, Window Watchdog and AVR ATtiny87 (ATtiny167) Automotive Microcontroller with 8K (16K) Flash Memory - 3

Atmel ATA6616C/ATA6617C LIN System in Package Solution (SIP) NRES WD_OSC Receive data output Battery-related output for controlling an external voltage regulator Transmit data input; active low output (strong pull down) after a local wake-up request (1) Output undervoltage and watchdog reset (open drain) External resistor for adjustable watchdog timing For factory testing only (tie to ground) Ignition detection (edge sensitive) 5V regulator sense input pin For debug mode: Low watchdog is on; high watchdog is off 5V regulator output/driver pin Battery supply Enables the device into normal...

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ATA6616C/ATA6617C LIN SiP (System-in-Package) Solution Including LIN Transceiver, 5V/50 mA Voltage Regulator, Window Watchdog and AVR ATtiny87 (ATtiny167) Automotive Microcontroller with 8K (16K) Flash Memory - 4

Table 1-1. Pin Description (Continued) Note:1 This identifies the pins of the LIN SBC Atmel® ATA6624

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ATA6616C/ATA6617C LIN SiP (System-in-Package) Solution Including LIN Transceiver, 5V/50 mA Voltage Regulator, Window Watchdog and AVR ATtiny87 (ATtiny167) Automotive Microcontroller with 8K (16K) Flash Memory - 5

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 ESD according to IBEE LIN EMC Test Spec. 1.0 following IEC 61000-4-2 - Pin VS, LIN, KL_15 (47k/100nF) to GND - Pin WAKE (33 k serial resistor) to GND ESD HBM following...

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ATA6616C/ATA6617C LIN SiP (System-in-Package) Solution Including LIN Transceiver, 5V/50 mA Voltage Regulator, Window Watchdog and AVR ATtiny87 (ATtiny167) Automotive Microcontroller with 8K (16K) Flash Memory - 6

Maximum Ratings of the LIN-SBC (Continued) 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 Logic pins (RXD, TXD, EN, NRES, NTRIG, WD_OSC, MODE, TM) Output current NRES PVCC DC voltage VCC DC voltage Table 2-3. Maximum Ratings of the...

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ATA6616C/ATA6617C LIN SiP (System-in-Package) Solution Including LIN Transceiver, 5V/50 mA Voltage Regulator, Window Watchdog and AVR ATtiny87 (ATtiny167) Automotive Microcontroller with 8K (16K) Flash Memory - 7

Master and slave operation possible Supply voltage up to 40V Operating voltage VS = 5V to 27V Typically 10µA supply current during sleep mode Typically 57µA supply current in silent mode Linear Low-drop voltage regulator, 85mA current capability: ● Normal, fail-safe, and silent mode In sleep mode VCC is switched off VCC undervoltage detection (4ms reset time) and watchdog reset logical combined at open drain output NRES Negative trigger input for watchdog Boosting the voltage regulator possible with an external NPN transistor LIN physical layer according to LIN 2.0, 2.1 specification and...

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ATA6616C/ATA6617C LIN SiP (System-in-Package) Solution Including LIN Transceiver, 5V/50 mA Voltage Regulator, Window Watchdog and AVR ATtiny87 (ATtiny167) Automotive Microcontroller with 8K (16K) Flash Memory - 8

Figure 3-1. Block Diagram VS Normal and Fail-safe Mode Normal Mode Edge Detection Slew Rate Control Control Unit Short Circuit and Overtemperature Protection Debounce Time Normal/Silent/ Fail-safe Mode 5V Undervoltage Reset Mode Select Internal Testing Unit Adjustable Watchdog Oscillator

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ATA6616C/ATA6617C LIN SiP (System-in-Package) Solution Including LIN Transceiver, 5V/50 mA Voltage Regulator, Window Watchdog and AVR ATtiny87 (ATtiny167) Automotive Microcontroller with 8K (16K) Flash Memory - 9

Functional Description Physical Layer Compatibility Since the LIN physical layer is independent from higher LIN layers (e.g., the LIN protocol layer), all nodes with a LIN physical layer according to revision 2.x can be mixed with LIN physical layer nodes, which are according to older versions (i.e., LIN 1.0, LIN 1.1, LIN 1.2, LIN 1.3), without any restrictions. Supply Pin (VS) The LIN operating voltage is VS = 5V to 27V. An undervoltage detection is implemented to disable data transmission if VS falls below VSth < 4V in order to avoid false bus messages. After switching on VS, the IC...

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ATA6616C/ATA6617C LIN SiP (System-in-Package) Solution Including LIN Transceiver, 5V/50 mA Voltage Regulator, Window Watchdog and AVR ATtiny87 (ATtiny167) Automotive Microcontroller with 8K (16K) Flash Memory - 10

Output Pin (RXD) The Output pin reports the state of the LIN bus to the microcontroller. LIN high (recessive state) is reported by a high level at RXD; LIN low (dominant state) is reported by a low level at RXD. The output has an internal pull-up resistor with typically 5k to VCC. The AC characteristics can be defined with an external load capacitor of 20pF. The output is short-circuit protected. RXD is switched off in Unpowered Mode (i.e., VS = 0V). 3.3.10 Enable Input Pin (EN) The Enable Input pin controls the operation mode of the device. If EN is high, the circuit is in normal mode with...

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ATA6616C/ATA6617C LIN SiP (System-in-Package) Solution Including LIN Transceiver, 5V/50 mA Voltage Regulator, Window Watchdog and AVR ATtiny87 (ATtiny167) Automotive Microcontroller with 8K (16K) Flash Memory - 11

3.3.18 NTRIG Input Pin The NTRIG Input pin is the trigger input for the window watchdog. A pull-up resistor is implemented. A negative edge triggers the watchdog. The trigger signal (low) must exceed a minimum time ttrigmin to generate a watchdog trigger. 3.3.19 Wake-up Events from Sleep or Silent Mode ● ● ● ● Modes of Operation Figure 3-2. Modes of Operation a: VS > 5V Unpowered Mode VBatt = 0V b: VS < 4V c: Bus wake-up event d: Wake up from WAKE or KL_15 pin Fail-safe Mode VCC: 5V With undervoltage monitoring Communication: OFF Watchdog: ON Silent Mode VCC: 5V With undervoltage monitoring...

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