ATA8741 Datasheet, PDF (1/238 Pages) ATMEL Corporation – Microcontroller with UHF ASK/FSK Transmitter

General Features
• Transmitter with Microcontroller Consisting of an AVR^® Microcontroller and RF
Transmitter PLL in a Single QFN24 5 mm × 5 mm Package (Pitch 0.65 mm)
– f₀ = 310 MHz to 350 MHz
• Temperature Range –40°C to +85°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 8 dBm at 315 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
Microcontroller
with
UHF ASK/FSK
Transmitter
ATA8741
1. General Description
The ATA8741 is a highly flexible programmable transmitter containing the AVR micro-
controller ATtiny44V and the UHF PLL transmitters in 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 ATA8741 can be used in the frequency band of f₀ = 315 MHz for
ASK or FSK data transmission.
9140B–INDCO–07/09