ATA5795-PNQW [ATMEL]

AES-128 Immobilizer Transponder for Use in Contactless Mode; AES- 128防盗器应答用于非接触模式


型号：	ATA5795-PNQW
厂家：	ATMEL
描述：	AES-128 Immobilizer Transponder for Use in Contactless Mode AES- 128防盗器应答用于非接触模式
文件：	总8页 (文件大小：311K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

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)

Embedded AVR

Microcontroller

Including RF

Transmitter and

Immobilizer LF

Functionality

for Remote

• 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

Keyless Entry

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.

ATA5795

Furthermore, the device has an integrated AES-128 cryptography hardware engine,

which is accessible by both the immobilizer and the RKE unit. The immobilizer inter-

face can run in contactless mode, allowing energy supply and data transmission via

the LF link.

Summary

Preliminary

The ATA5795 is designed for automotive applications that necessitate both immobili-

zation and Remote Keyless Entry functions in one single key. It conforms to

requirements of extremely low power consumption and provides all the necessary cir-

cuitry for the entire application.

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

Figure 1-1. System Block Diagram

Key

Car

Battery

VBAT

C_BUF

AVR

T-Coil

16 15 14 13 12 11 10

RF-Receiver:

ATA5723/24/28

ATA5780

ATA5795

Transponder

RF-

Loop antenna

25 26 27 28 29 30 31 32

Base Station:

U2270, ATA5272

ATA5795 [Preliminary]

9182AS–RKE–03/10

ATA5795 [Preliminary]

1.2

ATA5795 Block Diagram

Figure 1-2. ATA5795 Block Diagram

ECIN

A4P

A4N

Power

Management

SPI

FRC-Oscillator

Clock

XTO1

XTO2

XTO

Management

and

Monitoring

EEPROM/

2KB

RTC

Contactless

Interface/

Frac.-N

PLL

Transponder

PC0

Watchdog

Oscillator

RF-Transmitter

Volt. Monitor

IR-Driver

PD7/TM3

PD6/TM2

PD5/TM1

PD4/ECIN0

PD3

AVR-Core

VCO

Watchdog

Timer

Power

PD2/TEI

Amplifier

SRAM/512B

Flash/8KB

POR/BOD

and

Reset

PD1/T3ICP

PD0/INT0

Timer Block

Crypto Unit

ANT1

ANT2

Digital

Control

XTAL2

XTAL1

Debug-

WIRE

CRC-Module

IO-Ports

9182AS–RKE–03/10

2. Ultra-low-power AVR Microcontroller (ATA5795)

2.1

Features

2.1.1

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

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

32 31 30 29 28 27 26 25

TME

XTO1

VSRF

GNDRF

NRESET

PC0

PB3

PD3

PD4

PD5

PD6

PD7

PB4

PB5

ATA5795

A4N

A4P

10 11 12 13 14 15 16

9182AS–RKE–03/10

Table 2-1.

Pin Description

Alternate

Pin Number Pin Name

Function 1

Function 2 Function

Comment

TME

XTO1

VSRF

GNDRF

NRESET

PC0

Test mode enable

Connection for RF crystal

RF - pin

Power supply voltage RF

Power supply ground RF

Reset input / debugWire interface

I/O port

Port C0

A4N

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

A4P

VBAT

PD0

INT0

T3ICP

TEI

PCINT8

PCINT9

PCINT10

Port D0

Port D1

Port D2

PD1

PD2

Power supply voltage for the microcontroller. A capacitor

with capacitance C_BUFmust be connected at this pin to

buffer the voltage during field supply and block the

microcontroller VCC.

VCC

XTAL1

GND

XTAL2

PB5

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

TM5

TM4

TM3

TM2

TM1

ECIN0

PCINT5

PCINT4

PCINT15

PCINT14

PCINT13

PCINT12

PCINT11

PCINT3

PCINT2

PCINT1

Port B5

Port B4

Port D7

Port D6

Port D5

Port D4

Port D3

Port B3

Port B2

Port B1

RF - pin

Port B0

Port B7

Port B6

RF - pin

PB4

PD7

PD6

PD5

PD4

PD3

PB3

MISO

MOSI

SCK

I/O port / SPI

PB2

I/O port / SPI

PB1

I/O port / SPI

ANT2

ANT1

PB0

RF antenna 2

RF antenna 1

NSS

PCINT0

PCINT7

PCINT6

I/O port / SPI

PB7

I/O port

PB6

I/O port

XTO2

Connection for RF crystal

ATA5795 [Preliminary]

9182AS–RKE–03/10

ATA5795 [Preliminary]

3. Ordering Information

Extended Type Number

Package

Remarks

ATA5795-PNQW

QFN32 - 5x5

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

Bottom

3.6±0.15

Not indicated tolerances ±0.05

Top

Pin1 identification

0.2

0.5 nom.

3.5

0.9±0.1

Z 10:1

technical drawings

according to DIN

specifications

Drawing-No.: 6.543-5124.01-4

Issue: 1; 28.11.05

0.23±0.07

9182AS–RKE–03/10

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International

Atmel Corporation

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USA

Tel: 1(408) 441-0311

Fax: 1(408) 487-2600

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78054

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www.atmel.com/literature

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9182AS–RKE–03/10

ATA5795-PNQW [ATMEL]

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