ATA5771 ATMEL Corporation, ATA5771 Datasheet

ATA5771

Manufacturer Part Number

ATA5771

Description

Manufacturer

ATMEL Corporation

Datasheet

1.ATA5771.pdf (284 pages)

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General Features

•

1. General Description

The ATA5771/ATA5773/ATA5774 is a single key fob IC containing the AVR microcon-

troller ATtiny44V and the UHF PLL transmitters T5750/53/54 build-up using a stacked

die technique supplied in a QFN24 5 mm x 5 mm package. These devices have been

specially developed for the demands of RF low-cost data transmission systems with

data rates of up to 32 kBit/s. Its main applications are in the areas of Remote Key-

less-Entry (RKE), Passive Entry Go (PEG), and Remote Start. It can be used in the

frequency range of f

Complete Key Fob IC Consisting of an AVR

a Single QFN24 5 mm x 5 mm Package (Pitch 0.65 mm)

Automotive Qualified

Temperature Range –40 C to +85 C

ESD Protection: HBM 2500V, MM 100V, CDM 1000V

Supply voltage 2.0V to 4.0V for Single Li-cell Power Supply

Low Power Consumption

Modulation Scheme ASK/FSK

Integrated PLL Loop Filter

High Output Power (8 dBm at 315 MHz/7.5 dBm at 433 MHz/ 5.5 dBm at 868 MHz)

High Performance, Low Power AVR 8-bit Microcontroller

Advanced RISC Architecture

Non-volatile Program and Data Memories

Peripheral Features

Special Microcontroller Features

12 Programmable I/O Lines

= 868 MHz to 928 MHz for ASK or FSK data transmission.

– f

– Active Mode: Typical 9.6 mA at 3.0V and 1 MHz Microcontroller-clock

– Power-down Mode: Typical 200 nA at 3.0V

– 4KByte of In-system Programmable Program Memory Flash

– 256 Bytes In-system Programmable EEPROM

– 256 Bytes Internal SRAM

– Two Timer/Counter, 8- and 16-bit Counters with Two PWM Channels on Both

– 10-bit ADC

– Programmable Watchdog Timer with Separate On-chip Oscillator

– Universal Serial Interface (USI)

– debugWIRE On-chip Debug System

– In-system Programmable via SPI Port

– External and Internal Interrupt Sources

– Pin Change Interrupt on 12 Pins

– Enhanced Power-on Reset Circuit

– Programmable Brown-out Detection Circuit

– Internal Calibrated Oscillator

– On-chip Temperature Sensor

= 310 MHz to 350 MHz (ATA5773)

= 429 MHz to 439 MHz (ATA5774)

= 868 MHz to 928 MHz (ATA5771)

= 310 MHz to 350 MHz, f

Microcontroller and RF Transmitter PLL in

= 429 MHz to 439 MHz or

Microcontroller

with

UHF ASK/FSK

Transmitter

ATA5771

ATA5773

ATA5774

9137A–RKE–10/08

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