Embit EMB-Z2538PA Manuale di istruzioni

EMB-Z2538PA

PRELIMINARY

Datasheet

FCC ID: Z7H-EMB2538PA

The device complies with part 15 of the F Rules. Operation is subjected

to the following 2 conditions: (1) this device may not cause harmful

interference and (2) this device must accept any interference received,

including interference that may cause undesired operation.

Document information

Versions & Revisions

Revisio Date Author Comme ts

0.9 23/10/2013 AS Preliminary version

1.0 25/10/2013 FM Added typical appl. circuit; current

measurements; minor changes

1.1 20/05/2014 FM Added mention of Olimex programmer

1.2 17/02/2015 B Updated sensitivity

1.3 18/11/2015 B Updated F information

1.4 08/01/2016 B Updated F information

References

Ref Versio Date Author Title

Index

1 Description.................................................................................................4

1.1 Specifications..........................................................................................4

1.2 Applications.............................................................................................5

1.3 Block diagram..........................................................................................5

1.4 Microcontroller.........................................................................................5

1.5 Antenna..................................................................................................6

1.6 Firmware................................................................................................8

1. Development Tools...................................................................................9

2 Size and footprint......................................................................................10

2.1 Size......................................................................................................10

2.2 Connector positioning..............................................................................11

2.3 Footprint...............................................................................................12

2.4 Antenna positioning................................................................................14

2.5 Notes....................................................................................................14

3 Connections..............................................................................................1

3.1 Connections overview.............................................................................15

3.2 Connections Table..................................................................................15

4 Typical Application Circuit.........................................................................17

Electrical characteristics...........................................................................18

5.1 Absolute Maximum Ratings......................................................................18

5.2 Operating Conditions...............................................................................18

5.3 Power Consumption................................................................................18

5.4 RF Characteristic....................................................................................18

6 Soldering..................................................................................................19

7 Regulatory Compliance.............................................................................20

.1 Introduction...........................................................................................20

.2 Compliance: Important information...........................................................20

.3 CE: compliance......................................................................................21

.4 CE: Output power...................................................................................21

.5 FCC: Data.............................................................................................21

.6 FCC: Maximum Output power...................................................................22

. FCC: Channelization................................................................................22

8 Ordering information................................................................................23

8.1 Types...................................................................................................23

8.2 Packaging..............................................................................................23

9 Disclaimer.................................................................................................24

9.1 Handling precautions..............................................................................24

9.2 Limitations.............................................................................................24

9.3 Disclaimer of liability...............................................................................24

9.4 Trademarks...........................................................................................24

EMB-Z2538PA Datasheet (rev 1.4) Page 3 of 24

Description

1 Description

EMB-Z2538PA is an OEM wireless module developed by embit for Low-Rate Wireless

Personal Area Networks (LR-WPAN) applications. The module combines high performance

to small dimensions and low cost, providing the system integrator a simple and easy way

to add IEEE 802.15.4 / ZigBee® low range wireless connectivity and multi-hop networking

into existing products.

EMB-Z2538PA is configured as an embedded micro system or simple data modem for low

power applications in the 2.4 GHz ISM band. It is based on a Texas Instruments™ 2538

single chip device which is an ARM ortexTM-M3 32 bit microcontroller with up to 512 KB of

FLASH memory and 32 KB of RAM. The EMB-Z2538PA includes a hardware accelerator for

the MA layer (IEEE 802.15.4) and a 2.4 GHz transceiver.

The ad-hoc RF section includes a power amplifier and a low noise amplifier and delivers

best-inclass performance in terms of covered area and power consumption. The output

power can be increased up to +22 dBm by simple software configurations and the

sensitivity is configurable between two options, allowing to cover distances up to 500

meters (LoS); the U.FL receptacle allows the connection of an external antenna.

EMB-Z2538PA can communicate with other devices through a wide range of serial

interfaces: two UART ports, SPI, several digital I/O ports (up to 15 digital lines) and one

analog port.

1.1 Specifications

•32-bit ARM ortexTM-M3 M U

•Up to 512 KB of Flash, 32 KB of RAM (of which 16 KB retention in all power modes)

•(optional) Internal additional 64 KB of RAM over SPI

•(optional) Internal 32768 Hz quartz

•Output power: up to +22 dBm (100 mW)

•Sensitivity: up to -101 dBm (high sensitivity mode)

•P B antenna (PIFA), wire connector and U.FL receptacle for external antennas

•overage: up to 500 meters (LoS)

•Unique IEEE address (64 bit) on-board

•SMD edge connector

EMB-Z2538PA Datasheet (rev 1.4) Page 4 of 24

Description

1.2 Applications

•Meteri g: thermostat, meters, remote devices, displays, central devices, etc..

•Home/Buildi gs Automatio : safety systems and access control, HVA ,

door/window control, lightning, etc..

•I dustrial Automatio : process control, wireless sensor networks, identification

and asset tracking, etc..

•Healthcare: blood pressure monitoring, thermometers, E G, etc..

1.3 Block diagram

Image 1: block diagram for the EMB-Z2538PA

1.4 Microcontroller

EMB-Z2538PA is equipped with the latest System-On- hip (SO ) from Texas Instruments™:

the 2538. The 2538 is an integrated platform for IEEE 802.15.4 applications or

ZigBee® applications. The device integrates a low power 2.4 GHz transceiver, an M U

based on an ARM ortex-M3 core (32 bit) and a hardware accelerator for the IEEE 802.15.4

MA layer.

The 2538 can be used for different wireless applications, starting from simple point to

point proprietary protocols up to ZigBee® self-healing mesh networks, and is conceived to

offer high computational power but low power consumption. It targets in particular smart

metering applications.

The ARM ortex-M3 32 bit core works at 32 MHz and supports the Thumb-2 instruction set;

it is coupled with 512 KB of FLASH memory and 32 KB of SRAM memory.

EMB-Z2538PA Datasheet (rev 1.4) Page 5 of 24

Description

1. Antenna

The EMB-Z2538PA module offers two different antenna options:

•PIFA antenna directly printed on the P B. The performances of this antenna are

influenced by the positioning of the module in the system. The antenna

specifications are provided in next paragraph.

•External antenna connector: 50 Ohm single ended U.FL connector.

1. .1 Antenna options /type

The module EMB-Z2538PA is provided in two alternative antenna output configurations

that corresponds into two different part numbers:

EMB-Z2538PA/IA that operates with the integrated P B PIFA antenna, this P/N can be

identified by the position of the 0402 resistor (zero R) in the RF chain (the one closer to

the printed antenna) as shown in the following picture, U.FL connector is not mounted:

Image 6: EMB-Z2538PA/IA, positioning of zero Ohm resistor

EMB-Z2538PA/UL that operates only with one of the external antenna present in

“Chapter 7.2 Compliance: Important information”.

This P/N can be identified by the horizontal position of the 0402 resistor (zero R) in the

RF chain (the one closer to the printed antenna) as shown in the following picture, U.FL

connector is mounted (mandatory):

Image 7: EMB-Z2538PA/UL, positioning of zero Ohm resistor

EMB-Z2538PA Datasheet (rev 1.4) Page 6 of 24

Description

For additional information on part-numbering, antenna option and antenna permitted

refer to the right section present in that datasheet. Power Amplifier / Low Noise

Amplifier

The EMB-Z2538PA module is equipped with a PA / LNA combination to increase the

communication range of the device. The PA provides a fixed gain of +24 dB and the LNA

can provide a gain of +11 dB or +6 dB selectable from the M U. To switch between low

gain and high gain the M U must drive the appropriate pin described in section “Power

Amplifier Interface”.

1. .2 PIFA antenna

The printed antenna of the EMB-Z2538PA is a simple and performant solution for a

2.4 GHz system. It has a maximum gain of -2 dBi.

EMB-Z2538PA Datasheet (rev 1.4) Page 7 of 24

Description

1.6 Firmware

The EMB-Z2538PA is compatible with the TIMA stack (which can be used to develop

IEEE 802.15.4-based applications) and the Z-STA K (which can be used to develop ZigBee®

applications) provided by Texas Instruments™. Some configuration to these stacks are

required in order to drive the PA and LNA available on the EMB-Z2538PA, as described

below.

1.6.1 Power Amplifier Interface

The EMB-Z2538PA has an integrated power amplifier (PA) and low noise amplifier (LNA)

that must be controlled by the transceiver. Depending on the stack some modifications

might be required in order to control the front-end. The interface between transceiver

and front-end is composed of an SPI port and three GPIO pins: “Enable”, “PA_enable”

and “Low/High_Sensitivity”.

The “Enable” pin (for controlling the LNA) is remapped to P 2 while the “PA_enable”

pin is remapped to P 3. The right settings for OBSSEL3 and OBSSEL2 must be changed in

mac_radio_defs.c of the TIMA stack:

/* PC3 -> PAEN */

RFC_OBS_CTRL0 = RFC_OBS_CTRL_PA_PD_INV;

OBSSEL3 = OBSSEL_OBS_CTRL0;

/* PC2 -> EN (LNA cont ol) */

RFC_OBS_CTRL1 = RFC_OBS_CTRL_LNAMIX_PD_INV;

OBSSEL2 = OBSSEL_OBS_CTRL1;

More information is available in the documents provided with the EMB-Z2538PA-EVK, or

you can contact Embit firmware support.

1.6.2 Texas Instruments stack configuration

The Texas Instruments™ stacks needs to be customized in order to support the

EMB-Z2538PA. The modifications includes the pin configuration, the 32 kHz

configuration, and the power amplifier selection (the definitions HAL_PA_LNA and

HAL_PA_LNA_ 2592 must enabled).

Depending on the board in which the EMB-Z2538PA module will be mounted, some

remapping in the TIMA /Z-stack firmware of the defines controlling LEDs and

pushbuttons might be required.

More information is available in the documents provided with the EMB-Z2538PA-EVK, or

you can contact Embit firmware support.

EMB-Z2538PA Datasheet (rev 1.4) Page 8 of 24

Description

1.6.3 USARTs and Other Peripherals Routing

The 2538 M U allows to route the internal peripherals signals (e.g., uart, spi, …) to

different GPIOs. Refer to section “General-Purpose Inputs/Outputs” of the document

“ 2538 So for 2.4-GHz IEEE 802.15.4 & ZigBee/ZigBee IP Apps User's Guide (Rev. )”.

Please note that the default configuration of the 2538 is different than the Standard

Embit Pinout.

1.7 Development Tools

To program the EMB-Z2538PA any programmer compatible with the TI ARM ortex-M3

architecture can be used. Embit suggests the use of Segger J-Link/J-Trace debug probes

or a TI XDS100v3 compatible programmers (e.g., the Olimex TMS320-XDS100-V3).

It is important to note that the IAR Embedded WorkBench for ARM IDE is needed to

develop applications employing the Texas Instruments™ TIMA and Z-Stack firmware

packages.

EMB-Z2538PA Datasheet (rev 1.4) Page 9 of 24

Size and footprint

2 Size and footprint

2.1 Size

The mechanical dimensions of the EMB- Z2538PA are identical to the dimensions of all

other Embit modules: 29.50 x 22.60 mm. The thickness is 3.6 mm ( AN Shield included).

Image 8: Outline

EMB-Z2538PA Datasheet (rev 1.4) Page 10 of 24

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