AT86RF401 Datasheet PDF - ATMEL Corporation
| Part Number | AT86RF401 | |
| Description | Smart RF Wireless Data Microtransmitter | |
| Manufacturers | ATMEL Corporation | |
| Logo |  |
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Features
• RF Frequency Range of 264–456 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
• Remote Keyless Entry (RKE) Transmitters
• Wireless Security Systems
• Home Applicance 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 LiMnO2 coin cell (CR2032 or similar), three capacitors, an inductor and a tuned-
loop antenna to implement a complete on-off keyed (OOF) wireless RF data
transmitter.
Figure 1. Block Diagram
www.DataSheet4U.com
Smart RF
Wireless Data
Microtransmitter
AT86RF401
XTAL/CLK
XTALB
OSCILLATOR
PHASE
DETECTOR
LOOP
FILTER
VCO
PRESCALER
÷ 24
RF
AMP
ANT
ANTB
AVDD
AGND
POWER
SUPPLY
SUPERVISOR
CLOCK
RESET
WATCHDOG
LOW-VOLTAGE DETECT
BROWN-OUT PROTECT
DATA
GAIN
TRIM
AVR RISC µC
2 KB Flash Program Memory
128 Bytes EEPROM Data Memory
B+
1424F–RKE–12/03
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Table 2. Pin Descriptions – 20-lead TSSOP (Continued)
AT86RF401
www.DataSheet4U.com
RESETB
5
NC 6
Data
nable−
I/O0 (SDI) 7
Data
Enable
VDD
35 k Ω
5
To AVR
SPI Reset Input: A “low” on this pin resets the device and puts
the part into SPI mode. A logic-high on this pin causes the
device to execute its program if the VDD is above the brown-
out voltage level.
VDD
VDD
35 k Ω
No Connect. Float Pin.
7 SPI Data In/Input/Output 0: General-purpose I/O and button
input. In SPI mode, this pin serves as SDI (Serial Data Input).
To AVR
Data
I/O1 (SDO) 8 Enable−
Data
Enable
VDD
VDD
35 k Ω
SPI Data Out/Input/Output 1: General-purpose I/O and button
8 input. In SPI mode, this pin serves as SDO (Serial Data
Output).
To AVR
I/O2 (SCK) 9
Data
Enable−
Data
Enable
VDD
VDD
35 k Ω
9 SPI Clock/Input/Output 2: General-purpose I/O and button
input. In SPI mode, this pin serves as SCK (SPI Clock Input).
To AVR
XTAL/CLK 10
10
11
40 pF
40 pF
Crystal/Clock Input: Input to the inverting oscillator amplifier
and input to the internal clock operating circuit. This pin may
be driven externally for test purposes.
1424F–RKE–12/03
5
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for AT86RF401 electronic component. |
| Information | Total 30 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ AT86RF401.PDF Datasheet ] | |
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