ATA8742-PXQW【PDF 1/238 页】MCU W/TRANSMITTER ASK/FSK 24QFN

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General Features

" Transmitter with Microcontroller Consisting of an AVR

?/DIV>

Microcontroller and RF

Transmitter PLL in a Single QFN24 5 mm ?/SPAN> 5 mm Package (Pitch 0.65 mm)

= 429 MHz to 439 MHz

" Temperature Range 40?/SPAN>C to +85?/SPAN>C

" Supply Voltage 2.0V to 4.0V Allowing Usage of Single Li-cell Power Supply

" Low Power Consumption

Active Mode: Typical 9.8 mA at 3.0V and 4 MHz Microcontroller-clock

Power-down Mode: Typical 200 nA at 3.0V

" Modulation Scheme ASK/FSK

" Integrated PLL Loop Filter

" Output Power of 7.5 dBm at 433.92 MHz

" Easy to Design-in Due to Excellent Isolation of the PLL from the PA and Power Supply

" Single-ended Antenna Output with High Efficient Power Amplifier

" Very Robust ESD Protection: HBM 2500V, MM100V, CDM 1000V

" High Performance, Low Power AVR 8-bit Microcontroller, Similar to Popular ATtiny44

" Well Known and Market-accepted RISC Architecture

" Non-volatile Program and Data Memories

4 KBytes of In-system Programmable Program Memory Flash

256 Bytes In-system Programmable EEPROM

256 Bytes Internal SRAM

" Programming Lock for Self-programming Flash Program and EEPROM Data Security

" Peripheral Features

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

10-bit ADC

On-chip Analog Comparator

Programmable Watchdog Timer with Separate On-chip Oscillator

Universal Serial Interface (USI)

" Special Microcontroller Features

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

" 12 Programmable I/O Lines

1. General Description

The ATA8742 is a highly flexible programmable transmitter containing the AVR micro-

controller ATtiny44V and the UHF PLL transmitters a small QFN24 5 mm ?5 mm

package. This device is a member of a transmitter family covering several operating

frequency ranges, which has been specifically developed for the demands of RF

low-cost data transmission systems with data rates of up to 32 kBit/s. Its primary appli-

cations are in the areas of industrial/aftermarket Remote Keyless-Entry (RKE)

systems, alarm, telemetering, energy metering systems, home automotion/entertain-

ment and toys. The ATA8742 can be used in the frequency band of f

= 433 MHz for

ASK or FSK data transmission.

Microcontroller

with

UHF ASK/FSK

Transmitter

ATA8742

9151AINDCO07/09

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