EnOcean STM 300U Manuale utente

EnOcean GmbH

Kolpingring 18a

82041 Oberhaching

Germany

Phone +49.89.67 34 689-0

Fax +49.89.67 34 689-50

[email protected]

www.enocean.com

Subject to modifications

STM 300 / STM 300C / STM 300U User

Manual

V1.5 May 2019

Page 1/45

USER MANUAL

STM 300 / STM 300U Scavenger Transceiver Module

Patent protected:

WO98/36395, DE 100 25 561, DE 101 50 128,

WO 2004/051591, DE 103 01 678 A1, DE 10309334,

WO 04/109236, WO 05/096482, WO 02/095707,

US 6,747,573, US 7,019,241

Observe precautions! Electrostatic sensitive devices!

USER MANUAL

STM 300 / STM 300U Scavenger Transceiver Module

REVISION HISTORY

The following major modifications and improvements have been made to the first version of

this document:

Major Changes

1.01

Tape running direction added in 3.8

1.10

Application note for multiple digital inputs with WAKE functionality added.

1.20

Error corrected in 3.5.1. and 4.1: Maximum gain of external antenna at 50 Ohm

output RF_50 is 0 dBi!

1.25

Charging circuit in 3.1 corrected; remarks added regarding use of IOVDD in 2.3.

Parameters of A/D converter corrected and specified in more detail in 2.3.2

1.26

Optional resolution at ADIO0, ADIO1, ADIO2 corrected in 2.3. Detailed description

in 2.9.1 was correct!

1.30

New improved application note in 3.1, which avoids deep discharge of the long

term storage.

1.31

Updated data on conducted output power in 1.2; improved layout recommenda-

tions in 3.6

1.32

Antenna recommendations removed and referred to external application note

AN102, and AN105; Maximum Rating for IOVDD modified (IOVDD may now exceed

VDD); Chapter “Related Documents” added. Figure added in 3.3.1; parameters for

antenna requirements relaxed in 4.5.1.

1.33

Added STM 300U (902.875 MHz), new product image

1.34

Updated Agency certifications according to FCC / IC requirements

1.35

Mitsubishi Materials Chip Antenna added to limited modular approval

1.36

Improved ext. button circuit example to avoid keybounce of digital inputs,

deleted STM 300C

1.4

New Dolphin layout, R&TTE -> RED

1.5

New Logo

Published by EnOcean GmbH, Kolpingring 18a, 82041 Oberhaching, Germany

www.enocean.com, info@enocean.com, phone +49 (89) 6734 6890

Important!

This information describes the type of component and shall not be considered as assured characteris-

tics. No responsibility is assumed for possible omissions or inaccuracies. Circuitry and specifications

are subject to change without notice. For the latest product specifications, refer to the EnOcean web-

site: http://www.enocean.com.

As far as patents or other rights of third parties are concerned, liability is only assumed for modules,

not for the described applications, processes and circuits.

EnOcean does not assume responsibility for use of modules described and limits its liability to the

replacement of modules determined to be defective due to workmanship. Devices or systems contain-

ing RF components must meet the essential requirements of the local legal authorities.

The modules must not be used in any relation with equipment that supports, directly or indirectly,

human health or life or with applications that can result in danger for people, animals or real value.

Components of the modules are considered and should be disposed of as hazardous waste. Local

government regulations are to be observed.

Packing: Please use the recycling operators known to you.

USER MANUAL

STM 300 / STM 300U Scavenger Transceiver Module

TABLE OF CONTENT

1MODULE VARIANTS AND RELATED DOCUMENTS ...............................................4

2GENERAL DESCRIPTION .................................................................................4

2.1 Basic functionality .........................................................................................4

2.2 Technical data...............................................................................................6

2.3 Physical dimensions .......................................................................................6

2.4 Environmental conditions ...............................................................................7

2.5 Ordering Information .....................................................................................7

3FUNCTIONAL DESCRIPTION ............................................................................8

3.1 Simplified firmware flow chart and block diagram ..............................................8

3.2 Hardware pin out...........................................................................................9

3.3 Pin description and operational characteristics................................................. 10

3.3.1 GPIO supply voltage ................................................................................ 12

3.3.2 Analog and digital inputs .......................................................................... 13

3.4 Absolute maximum ratings (non operating) .................................................... 14

3.5 Maximum ratings (operating)........................................................................ 14

3.6 Power management and voltage regulators .................................................... 14

3.7 Charge control output (CCO)......................................................................... 15

3.8 Configuration .............................................................................................. 16

3.8.1 Hardware-defined configuration settings..................................................... 16

3.8.2 Configuration via programming interface .................................................... 17

3.9 Radio telegram............................................................................................ 19

3.9.1 Normal operation..................................................................................... 19

3.9.2 Teach-in telegram ................................................................................... 20

3.10 Transmit timing...................................................................................... 20

3.11 Energy consumption ............................................................................... 21

4APPLICATIONS INFORMATION....................................................................... 22

4.1 How to connect an energy harvester and energy storage.................................. 22

4.2 Using SCO pin............................................................................................. 25

4.3 Using WAKE pins ......................................................................................... 25

4.4 Using RVDD ................................................................................................ 26

4.5 Antenna options STM 300x ........................................................................... 27

4.5.1 Overview ................................................................................................ 27

4.5.2 Whip antenna.......................................................................................... 27

4.5.3 Helical antenna (supplier: EnOcean) .......................................................... 28

4.5.4 Chip antenna (supplier: Mitsubishi Material, Type AM11DG-ST01) ................. 29

4.6 Positioning of the whip antenna..................................................................... 30

4.7 Recommendations for laying a whip antenna................................................... 31

4.8 Layout recommendations for foot pattern ....................................................... 32

4.9 Soldering information................................................................................... 36

4.10 Tape & Reel specification ......................................................................... 37

4.11 Transmission range................................................................................. 38

5AGENCY CERTIFICATIONS ............................................................................ 39

5.1 Radio Equipment Directive (RED) for the European Union ................................. 39

5.2 FCC (United States) Certification ................................................................... 40

5.3 FCC (United States) Regulatory Statements ................................................... 43

5.4 ISED (former Industry Canada) Certification ................................................... 44

5.5 ISED (former Industry Canada) Regulatory Statements.................................... 45

USER MANUAL

STM 300 / STM 300U Scavenger Transceiver Module

1MODULE VARIANTS AND RELATED DOCUMENTS

The STM 300 Scavenger Transceiver Module is available in following operating frequency

variants:

STM 300: 868.350 MHz

STM 300U: 902.875 MHz

Inside this manual, the term “STM 300x”can be used to represent all of the above frequen-

cy variants.

This document describes operation of STM 300x modules with their built-in firmware. If you

want to write own firmware running on the integrated micro controller or need more de-

tailed information on the Dolphin core please also refer to:

Dolphin Core Description

Dolphin API Documentation

In addition we recommend following our application notes, in particular:

AN102: Antenna Basics –Basic Antenna Design Considerations for EnOcean based

Products

AN105: 315 MHZ Internal Antenna Design –Considerations for EnOcean based Products

AN207: ECS 300/310 Solar Panel - Design Considerations

AN208: Energy Storage –Design Considerations

AN209: STM 300 THERMO OR BATTERY POWERED –Power Supply Alternatives to Solar

Panel

2GENERAL DESCRIPTION

2.1 Basic functionality

The extremely power saving RF transmitter

module family STM 300x of EnOcean en-

ables the realization of wireless and main-

tenance free sensors and actuators such as

room operating panels, motion sensors or

valve actuators for heating control.

Power supply is provided by an external

energy harvester, e.g. a small solar cell

(e.g. EnOcean ECS 3x0) or a thermal har-

vester.

An energy storage device can be connected

externally to bridge periods with no supply

from the energy harvester.

A voltage limiter avoids damaging of the

module when the supply from the energy

harvester gets too high.

USER MANUAL

STM 300 / STM 300U Scavenger Transceiver Module

The module provides a user-configurable cyclic wake up.

After wake up, a radio telegram (input data, unique 32 bit sensor ID, checksum) will be

transmitted in case of a change of any digital input value compared to the last transmission

or in case of a significant change of measured analogue values (different input sensitivities

can be selected).

In case of no relevant input change, a redundant retransmission signal is sent after a user

configurable number of wake-ups to announce all current values. In addition, a wake up

can also be triggered externally.

Features with built-in firmware

3 A/D converter inputs

4 digital inputs

Configurable wake-up and transmission cycle

Wake-up via Wake pins

Voltage limiter

Threshold detector

Application notes for calculation of energy budgets and management of external energy

storages

Product variants

STM 300 / STM 300U

Features accessible via API

Using the Dolphin API library it is possible to write custom firmware for the module.

STM 300x is in-system programmable. The API provides:

Integrated 16 MHz 8051 CPU with 32 kB FLASH and 2 kB SRAM

Receiver functionality

Various power down and sleep modes down to typ. 0.2 µA current consumption

Up to 16 configurable I/Os

10 bit ADC, 8 bit DAC

USER MANUAL

STM 300 / STM 300U Scavenger Transceiver Module

2.2 Technical data

Antenna

External whip or 50 Ω antenna mountable

Frequency

STM 300: 868.300MHz (ASK)1)

STM 300U: 902.875 MHz (FSK)

Data rate

125 kbps

Receiver Sensitivity (at 25 °C)

only via API

typ. –96 dBm2) (868.300 MHz)

typ. -98 dBm2) (902.875 MHz)

Conducted Output Power

@50min / typ /max

STM 300: 3 dBm

STM 300U: 1 dBm

Power Supply

2.1 V–4.5 V, 2.6 V needed for start-up

Current Consumption

Deep Sleep mode : typ. 0.2 µA

Transmit mode: typ. 24 mA, max. 33 mA

Receive mode (via API only): typ. 33 mA, max. 43 mA

Input Channels

4x digital input, 2x WAKE input , 3x analog input

Resolution: 3x 8 bit or 1x 10 bit, 1x 8 bit, 1x 6 bit

Radio Regulations

STM 300 (max. radiated power +1.4 dBm with whip): RED (EU)

STM 300U: FCC (US) / ISED (CA)

1) according to ISO/IEC 14543-3-10

2) @ 0.1% telegram error rate (based on transmitted sub-telegrams)

2.3 Physical dimensions

STM 300x (pads on bottom side of PCB!)

PCB dimensions 22 x 19 x 3.1 mm

Weight 1.9 g

Unless otherwise specified dimensions are in mm.

Tolerances:

PCB outline dimensions 0.2 mm

All other tolerances 0.1 mm

USER MANUAL

STM 300 / STM 300U Scavenger Transceiver Module

2.4 Environmental conditions

Operating temperature -25 °C … +85 °C

Storage temperature -40 °C … +85 °C

Storage temperature in tape & reel package -20 °C … +50 °C

Humidity 0% … 93% r.h., non-condensing

2.5 Ordering Information

Type

Ordering Code

Frequency

STM 300

S3001-D300

868.300 MHz

STM 300U

S3051-D300

902.875 MHz

The following solar cells are recommended for use with STM 300x:

Type

Ordering Code

Size

ECS 300

S3005-D305

35.0 × 12.8 × 1.1 mm

ECS 310

S3005-D310

50.0 × 20.0 × 1.1 mm

For technical details regarding these solar cells please refer to the ECS 300 and ECS 310

homepages.

USER MANUAL

STM 300 / STM 300U Scavenger Transceiver Module

3FUNCTIONAL DESCRIPTION

3.1 Simplified firmware flow chart and block diagram

USER MANUAL

STM 300 / STM 300U Scavenger Transceiver Module

3.2 Hardware pin out

The figure above shows the pin out of the STM 300x hardware. The pins are named accord-

ing to the naming of the EO3000I chip to simplify usage of the DOLPHIN API.

The table in section 3.3 shows the translation of hardware pins to a naming that fits the

functionality of the built-in firmware.

When writing own firmware based on the DOLPHIN API please refer to the Dolphin Core

Description and use this manual only for information regarding the module hardware, such

as pin out, layout recommendations, charging circuitry, antenna options, and approvals.

EO3000I

Antenna

balun

XTAL

16MHz

STM300 –TOP VIEW

DVDD

IOVDD

SCSEDIO0

PROG_EN

SCLKDIO1

WSDADIO2

RSDADIO3

GND

UVDD

WXIDIO

WXODIO

WAKE1

RESET

WAKE0

GND

ADIO0

ADIO1

ADIO2

ADIO3

ADIO4

ADIO5

ADIO6

ADIO7

GND

RVDD

GND

RF_50

RF_WHIP

VDDLIM

VDD

GND 1

V_OUT

AD_2

AD_1

AD_0

DI_3

DI_2

DI_1

DI_0

GND

CW_1

CW_0

WAKE0

CP_1

CP_0

LED

LRN

VDD

RF_WHIP

VDDLIM

UVDD

IOVDD

RESET

CCO

µController

RF Transceiver

DVDD

SCO

Ultra Low Power Unit

Power

Management

Mixed I/O

Interface

RF_50

PROG_EN

USER MANUAL

STM 300 / STM 300U Scavenger Transceiver Module

3.3 Pin description and operational characteristics

STM 300x

Hardware

Symbol

STM 300x

pin #

STM 300x

Firmware

Symbol

Function

Characteristics

GND

1, 5, 7,

17, 24,

26, 28,

GND

Ground connection

Must be connected to GND

VDD

Supply voltage

2.1 V –4.5 V;

Start-up voltage: 2.6 V

Maximum ripple: see 3.6

RVDD

V_OUT

RF supply voltage

regulator output

1.8 V. Output current: max. 10 mA.

See 0!

Supply for external circuitry, avail-

able while not in deep sleep mode.

DVDD

Digital supply volt-

age regulator out-

put

1.8 V. Output current: max. 5 mA

Supply for external circuitry, avail-

able

while not in deep sleep mode.

UVDD

Ultra low power

supply voltage

regulator output

Not for supply of external circuitry!

For use with WAKE pins, see section

4.3.

Max. 1 µA output current!

VDDLIM

Supply voltage

limiter input

Limitation voltage: 4.5 V

Maximum shunting current: 50 mA

IOVDD

GPIO supply volt-

age

Must be connected to desired inter-

face supply voltage as specified in

3.5, e.g. to DVDD. See also 0

RESET

Reset input

Programming I/F

Active high reset (1.8 V)

Connect external 10 kΩ pull-down.

PROG_EN

Programming I/F

HIGH: programming mode active

LOW: operating mode

Digital input, connect external 10 kΩ

pull-down.

ADIO0

AD_0

Analog input

Input read ~2 ms after wake-up.

Resolution 8 bit (default) or 10 bit.

See also 3.3.2.

ADIO1

AD_1

Analog input

Input read ~2 ms after wake-up.

Resolution 8 bit (default) or 6 bit.

See also 3.3.2.

ADIO2

AD_2

Analog input

Input read ~2 ms after wake-up.

Resolution 8 bit.

See also 3.3.2.

ADIO3

DI_0

Digital input

Input read ~2 ms after wake-up.

See also 3.3.2.

ADIO4

DI_1

Digital input

Input read ~2 ms after wake-up.

See also 3.3.2.

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