ATA5795-PNQW

Features • • • • • • • • • • • • • • • • • • • AES-128 Immobilizer Transponder for Use in Contactless Mode CMMI Certified. Configurable, Secure, Open Source Immobilizer Stack Energy Supply and Bi-directional Communication via LF Link (125 kHz) 32-bit Unique Identification Number Integrated Codecs for Enhanced LF Communication Range Fast AES-128 Cryptographic Engine for Both Immobilizer and RKE Functions Two 128-bit Secret Keys One 128-bit Transport Key Embedded Ultra-low-power Atmel® AVR® Microcontroller Fractional-N RF Transmitter Covering 315 MHz and 433 MHz 8-Kbyte Flash for User Application (6 Kbytes) and Immobilizer (2 Kbytes) 2112-byte EEPROM for User Data Storage (2 Kbytes) and Device Configuration (64 Bytes) Locking Mechanism Protects both Flash and EEPROM Contents Error Correction Code (ECC) Engine Protects both the Flash and EEPROM Units 1-wire Debug Interface Integrated with AVR Development Tools Automotive Grade C Compiler 1.9 to 3.6 V Battery Voltage Range (in Contact Mode) –40°C to +105°C Operating Temperature Small QFN 32 - 5x5 Package 1. Description ATA5795 is a smart Remote Keyless Entry (RKE) device that includes an embedded ultra-low-power AVR 8-bit microcontroller, a fractional-N RF transmitter and an LF immobilizer interface in a single QFN32 package. Furthermore, the device has an integrated AES-128 cryptography hardware engine, which is accessible by both the immobilizer and the RKE unit. The immobilizer interface can run in contactless mode, allowing energy supply and data transmission via the LF link. The ATA5795 is designed for automotive applications that necessitate both immobilization and Remote Keyless Entry functions in one single key. It conforms to requirements of extremely low power consumption and provides all the necessary circuitry for the entire application. Embedded AVR Microcontroller Including RF Transmitter and Immobilizer LF Functionality for Remote Keyless Entry ATA5795 Summary Preliminary NOTE: This is a summary document. The complete document is available. For more information, please contact your local Atmel sales office. 9182AS–RKE–03/10 1.1 System Block Diagram System Block Diagram Figure 1-1. Key Battery VBAT Car CBUF T-Coil 16 15 14 13 12 11 10 9 17 18 19 20 21 22 23 8 7 6 RF AVR RF-Receiver: ATA5723/24/28 ATA5780 ATA5795 5 4 3 2 1 RFLoop antenna 24 25 26 27 28 29 30 31 32 Transponder Base Station: U2270, ATA5272 2 ATA5795 [Preliminary] 9182AS–RKE–03/10 ATA5795 [Preliminary] 1.2 ATA5795 Block Diagram ATA5795 Block Diagram VSRF ECIN Figure 1-2. VBAT A4P A4N Power Management SPI EEPROM/ 2KB FRC-Oscillator VCC Contactless Interface/ Transponder PC0 Volt. Monitor PD7/TM3 PD6/TM2 PD5/TM1 PD4/ECIN0 PD3 PD2/TEI PD1/T3ICP PD0/INT0 XTAL2 XTAL1 Timer Block IR-Driver RTC Clock Management and Monitoring XTO XTO1 XTO2 Frac.-N PLL Watchdog Oscillator RF-Transmitter VCO AVR-Core Watchdog Timer Power Amplifier SRAM/512B Flash/8KB POR/BOD and Reset Crypto Unit DebugWIRE Digital Control CRC-Module IO-Ports ANT1 ANT2 NRESET(DW) PB2/MOSI PB7 PB6 PB3/MISO PB1/SCK PB0/NSS GND PB5/TM5 PB4/TM4 TME GNDRF 3 9182AS–RKE–03/10 2. Ultra-low-power AVR Microcontroller (ATA5795) 2.1 2.1.1 Features High Performance, Ultra-low-power AVR 8-bit Microcontroller Advanced RISC Architecture • • • • 131 Powerful Instruction 32 × 8 General Purpose Working Registers Fully Static Operation On-chip 2-cycle Multiplier Non-volatile Program and Data Memories • • • • 8 Kbytes of In-System Self-Programmable Flash with ECC 2112 Bytes of EEPROM with ECC 512-byte Internal SRAM Programming Lock for Software Security Peripheral Features • Programmable Watchdog/Interval Timer with Separate Internal Calibrated Ultra-Low-Power • • • • • • • • • • • • Oscillator Two 8-bit Timer/Counters: 1x with Compare Mode, 1x with Compare and Capture Mode Programmable Automatic Data Codec Power Management for Power Supply High Performance AES-128 Hardware Crypto Unit CRC Module Programmable Voltage Monitor Infrared (IR) Driver Stage to Control an External IR Transmitter Stage System Clock Management and Clock Monitoring Master/Slave SPI Serial Interface Integrated DebugWire Interface Interrupt and Wake-up on Pin Change 32-bit Unique Device Identification Number Analog Front End (AFE) and Power Management Features • Integrated Power Management that Automatically Handles the Two Power-supply Sources (Battery or 125 kHz Magnetic Field) • Contactless Interface for Power Supply and Bi-directional Data Communication Special Microcontroller Features • • • • • Power-on Reset and Brown-out Detection Two Internal Calibrated RC Oscillators Real Time Clock (RTC) Module with Integrated Ultra-low-power 32 kHz Crystal Oscillator Circuit External and Internal Interrupt Sources Several Sleep Modes: Idle, Extended Power-save, Power-save and Power-down 4 ATA5795 [Preliminary] 9182AS–RKE–03/10 ATA5795 [Preliminary] I/O and Package • 17 Programmable I/O Lines • Small QFN 32 - 5x5 Package RF-Transmitter • • • • • • • • • • • • • Fully Integrated Fractional-N PLL ASK and Closed Loop FSK Modulation Output Power up to +12.5 dBm from 300 to 450 MHz Current Consumption is Scaled by Output Power Programming Fast Crystal Oscillator Start-up Time of Typically 200 µs Low Current Consumption of Typically 7.3 mA at 5.5 dBm Just One 13.0000 MHz Crystal for 314.1 to 329.5 MHz and 424.5 to 439.9 MHz Operation Single-ended RF Power Amplifier Output Output Power from –0.5 to +12.5 dBm RF Frequency from 300 to 450 MHz with Different Crystals FSK Deviation with 396 Hz Resolution Data Rate up to 40 kbit/s (Manchester) Supports Multi-channel Operation 2.2 Pin Configurations Figure 2-1. Pin Out for QFN 32 Package XTO2 ANT1 ANT2 PB6 PB7 PB0 PB1 PB2 32 31 30 29 28 27 26 25 TME XTO1 VSRF GNDRF NRESET PC0 A4N A4P 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 24 23 22 PB3 PD3 PD4 PD5 PD6 PD7 PB4 PB5 ATA5795 21 20 19 18 17 VBAT PD0 PD1 PD2 VCC XTAL1 GND XTAL2 5 9182AS–RKE–03/10 Table 2-1. Pin Number 1 2 3 4 5 6 7 8 9 10 11 12 Pin Description Pin Name TME XTO1 VSRF GNDRF NRESET PC0 A4N A4P VBAT PD0 PD1 PD2 Alternate Function 1 dW INT0 T3ICP TEI Alternate Function 2 PCINT8 PCINT9 PCINT10 Function Test mode enable Connection for RF crystal Power supply voltage RF Power supply ground RF Reset input / debugWire interface I/O port Input pin for transponder AFE Input pin for transponder AFE Power supply voltage for battery I/O port / external interrupt input 0 I/O port / timer 3 external capture input I/O port / external timer input clock Power supply voltage for the microcontroller. A capacitor with capacitance CBUF must be connected at this pin to buffer the voltage during field supply and block the microcontroller VCC. 32 kHz crystal oscillator input pin Power supply ground 32 kHz crystal oscillator output pin I/O port / timer modulator pin 5 I/O port / timer modulator pin 4 I/O port / timer modulator pin 3 I/O port / timer modulator pin 2 I/O port / timer modulator pin 1 I/O port / external clock input 0 I/O port I/O port / SPI I/O port / SPI I/O port / SPI RF antenna 2 RF antenna 1 I/O port / SPI I/O port I/O port Connection for RF crystal Port B5 Port B4 Port D7 Port D6 Port D5 Port D4 Port D3 Port B3 Port B2 Port B1 RF - pin RF - pin Port B0 Port B7 Port B6 RF - pin Port D0 Port D1 Port D2 Port C0 RF - pin RF - pin RF - pin Comment 13 VCC - - 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 XTAL1 GND XTAL2 PB5 PB4 PD7 PD6 PD5 PD4 PD3 PB3 PB2 PB1 ANT2 ANT1 PB0 PB7 PB6 XTO2 TM5 TM4 TM3 TM2 TM1 ECIN0 MISO MOSI SCK NSS - PCINT5 PCINT4 PCINT15 PCINT14 PCINT13 PCINT12 PCINT11 PCINT3 PCINT2 PCINT1 PCINT0 PCINT7 PCINT6 - 6 ATA5795 [Preliminary] 9182AS–RKE–03/10 ATA5795 [Preliminary] 3. Ordering Information Extended Type Number ATA5795-PNQW Package QFN32 - 5x5 Remarks Pb-free 4. Package Information Figure 4-1. QFN 32 - 5x5 Package Package: QFN_ 5 x 5_32L Exposed pad 3.6 x 3.6 Dimensions in mm Not indicated tolerances ±0.05 Top 32 1 Pin1 identification 24 25 32 1 Bottom 3.6±0.15 17 17 8 16 9 0.5 nom. 3.5 5 0.2 0.9±0.1 Z 0.4±0.1 Z 10:1 Drawing-No.: 6.543-5124.01-4 Issue: 1; 28.11.05 0.23±0.07 technical drawings according to DIN specifications 7 9182AS–RKE–03/10 Headquarters Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131 USA Tel: 1(408) 441-0311 Fax: 1(408) 487-2600 International Atmel Asia Unit 1-5 & 16, 19/F BEA Tower, Millennium City 5 418 Kwun Tong Road Kwun Tong, Kowloon Hong Kong Tel: (852) 2245-6100 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 Product Contact Web Site www.atmel.com Technical Support auto_control@atmel.com Sales Contact www.atmel.com/contacts Literature Requests www.atmel.com/literature Disclaimer: T he information in this document is provided in connection with Atmel products. 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