A d v a nce d I n fo rm a t i o n

2

Linear Technology / Dust Networks

Eterna Datasheet

Table of Contents

1.0

General ..............................................................................................................4

1.1

Related Documentation ..................................................................................... 4

1.2

Conventions..................................................................................................... 4

1.2.1 Signal Naming.............................................................................................. 4

1.2.2 Number Format ............................................................................................ 4

2.0

Introduction.......................................................................................................5

2.1

Power Supply................................................................................................... 5

2.1.1 Supply Monitoring and Reset .......................................................................... 6

2.2

Precision Timing ............................................................................................... 6

2.2.1 Time Synchronization .................................................................................... 6

2.3

Time References............................................................................................... 6

2.3.1 Relaxation Oscillator...................................................................................... 6

2.3.2 32.768 kHz Crystal ....................................................................................... 6

2.3.3 20 MHz Crystal ............................................................................................. 6

2.4

Radio.............................................................................................................. 6

2.5

UARTs............................................................................................................. 7

2.5.1 API UART Protocols ....................................................................................... 7

2.5.3 CLI UART..................................................................................................... 8

2.6

Autonomous MAC ............................................................................................. 8

2.7

Security .......................................................................................................... 9

2.8

Temperature Sensor ......................................................................................... 9

2.8.1 Radio Inhibit ................................................................................................ 9

2.8.2 Sleep .......................................................................................................... 9

2.10 Flash Programming ........................................................................................... 9

4.0

Operation .........................................................................................................10

4.1

Start Up .........................................................................................................10

4.1.1 Fuse Table ..................................................................................................10

4.2

Serial Flash Emulation ......................................................................................11

4.3

Operation .......................................................................................................11

4.3.1 Active State ................................................................................................11

4.3.2 Doze State..................................................................................................11

4.4

Duty Cycling and Autonomous Peripherals...........................................................11

5.0

Pinout ..............................................................................................................12

5.1

Eterna Mote-on-Chip ........................................................................................12

5.3

Power Supply..................................................................................................14

5.3.1 Antenna .....................................................................................................15

5.4

Analog ...........................................................................................................15

5.5

JTAG..............................................................................................................15

6.0

Absolute Maximum Ratings ..............................................................................15

7.0

Recommended Operating Conditions................................................................16