ata5795-pnqw ATMEL Corporation, ata5795-pnqw Datasheet

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ata5795-pnqw

Manufacturer Part Number
ata5795-pnqw
Description
Embedded Avr Microcontroller Including Rf Transmitter And Immobilizer Lf Functionality For Remote Keyless Entry
Manufacturer
ATMEL Corporation
Datasheet
Features
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 inter-
face 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 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.
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
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
®
AVR
®
Microcontroller
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

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ata5795-pnqw Summary of contents

Page 1

... 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 ...

Page 2

... System Block Diagram Figure 1-1. System Block Diagram Battery RF- Loop antenna ATA5795 [Preliminary] 2 Key VBAT C BUF T-Coil ATA5795 Car RF AVR RF-Receiver: ATA5723/24/28 ATA5780 Transponder Base Station: U2270, ATA5272 9182AS– ...

Page 3

... ATA5795 Block Diagram Figure 1-2. ATA5795 Block Diagram A4P Power Management A4N Contactless Interface/ Transponder PC0 Volt. Monitor PD7/TM3 PD6/TM2 PD5/TM1 IR-Driver PD4/ECIN0 PD3 PD2/TEI PD1/T3ICP Timer Block PD0/INT0 XTAL2 Crypto Unit XTAL1 9182AS–RKE–03/10 SPI FRC-Oscillator Clock Management and EEPROM/ ...

Page 4

... 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 • 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 • ...

Page 5

... Supports Multi-channel Operation 2.2 Pin Configurations Figure 2-1. 9182AS–RKE–03/10 Pin Out for QFN 32 Package TME 1 XTO1 2 VSRF 3 GNDRF 4 ATA5795 NRESET 5 PC0 6 A4N 7 A4P ATA5795 [Preliminary PB3 24 PD3 23 PD4 22 PD5 21 PD6 20 PD7 19 PB4 18 PB5 17 5 ...

Page 6

... PB1 SCK 27 ANT2 - 28 ANT1 - 29 PB0 NSS 30 PB7 - 31 PB6 - 32 XTO2 - ATA5795 [Preliminary] 6 Alternate Function 2 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 ...

Page 7

... Ordering Information Extended Type Number ATA5795-PNQW 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 Pin1 identification Drawing-No.: 6.543-5124.01-4 Issue: 1; 28.11.05 9182AS–RKE–03/10 Package QFN32 - 5x5 Top 0.2 0.9 ±0.1 Z 10:1 0.23 ±0.07 ATA5795 [Preliminary] ...

Page 8

... Atmel products are not suitable for, and shall not be used in, automotive applications. Atmel’s products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life. © 2010 Atmel Corporation. All rights reserved. Atmel trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others. International Atmel Asia Atmel Europe Unit 1-5 & ...

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