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AT86RF401 Datasheet

  • AT86RF401

  • AT86RF401 [Updated 3/03. 50 Pages] Smart RF Wireless Data Tr...

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Features
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RF Frequency Range of 264鈥?56 MHz
6 dBm RF Output into Matched Antenna
RF Output Power Adjustable over 36 dB with 1 dB Resolution
Phase-locked Loop (PLL) Based Frequency Synthesizer
Supports OOK Modulation
Data Bandwidth of Up to 10 Kbps Manchester
2-volt Operation
8-bit AVR RISC Microcontroller Core
Minimal External Components
Space-saving 20-lead TSSOP
2 KB (1K x 16) of Flash Program Memory
128 Bytes of EEPROM
128 Bytes of SRAM
In-system Programmable Data and Program Memory
Six I/Os (Serial I/F, LED Drive Outputs, Button Input Interrupts)
Low Battery Detect and Brown-out Protection
Software Fine-tuning of VCO Tank Circuit
Applications
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Remote Keyless Entry (RKE) Transmitters
Wireless Security Systems
Home Appliance Control (Lighting Control, Ceiling Fans)
Radio Remote Control (Hobby, Toys)
Garage Door Openers
Wireless PC Peripherals (Keyboard, Mouse)
Telemetry (Tire Pressure, Utility Meter, Asset Tracking)
Description
The Atmel AT86RF401 Smart RF Microtransmitter is a highly integrated, low-cost RF
transmitter, combined with an AVR RISC microcontroller. It requires only a crystal, a
single LiMnO
2
coin cell (CR2032 or similar), three capacitors, an inductor and a tuned-
loop antenna to implement a complete on-off keyed (OOK) wireless RF data
transmitter.
Figure 1.
Block Diagram
LOOP FIL
L1
L2
XTAL/CLK
OSCILLATOR
XTALB
PHASE
DETECTOR
LOOP
FILTER
VCO
RF
AMP
AVDD
POWER
SUPPLY
SUPERVISOR
AGND
DGND
DVDD
SCK/IO2
SDO/IO1
SDI/IO0
IO5
IO4
IO3
RESETB
芒
Smart RF
Wireless Data
Microtransmitter
AT86RF401
ANT
ANTB
PRESCALER
梅
24
CFIL
B+
DATA
CLOCK
RESET
WATCHDOG
LOW-VOLTAGE DETECT
BROWN-OUT PROTECT
GAIN
TRIM
AVR
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RISC
碌C
2 KB Flash Program Memory
128 Bytes EEPROM Data Memory
1424E鈥揜KE鈥?3/03
1

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