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PDF ATA5795 Data sheet ( Hoja de datos )
| Número de pieza | ATA5795 | |
| Descripción | Embedded AVR Microcontroller Including RF Transmitter and Immobilizer LF Functionality | |
| Fabricantes | Fairchild Semiconductor | |
| Logotipo |  |
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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 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.
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 page  
ATA5795 [Preliminary]
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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
TME
XTO1
VSRF
GNDRF
NRESET
PC0
A4N
A4P
32 31 30 29 28 27 26 25
1 24
2 23
3 22
4
ATA5795
21
5 20
6 19
7 18
8 17
9 10 11 12 13 14 15 16
PB3
PD3
PD4
PD5
PD6
PD7
PB4
PB5
9182AS–RKE–03/10
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet ATA5795.PDF ] | |
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