ZICM357P2-KIT1-1【PDF 4/16 页】KIT DEVELOPMENT ENGINEER EM357

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MeshConnect? EM357 Module

TRANSCEIVERIC

The MeshConnect EM357 Module uses the Ember EM357 transceiver IC. This IC incorporates the RF transceiver

with the baseband modem, a hardwired MAC and an embedded ARM? Cortex?-M3 microcontroller, offering an

excellent low cost high performance solution for all IEEE 802.15.4/ZigBee applications.

For more information about the Silicon Laboratories EM357 IC, visit http://www.silabs.com

ADDITIONAL FLASH MEMORY

The MeshConnect EM357 Modules (ZICM357P2-2 and ZICM357P2-2C) incorporates an optional additional 1MB

external Flash memory for OTA program updates. The Flash memory communicates over the EM357’s second

serial controller using SPI. The Flash memory is wired to the following castellation pins:

GPIO Name

PA0

PA1

PA2

PA3

WP

Function

SC2MOSI

SC2MISO

SC2SCLK

SC2nSSEL

Flash memory Write Protect line (has internal pull-up

resistor, but not connected to the EM357)

EM357 Module

Pin Number

3

4

5

6

2

The instruction set for the Flash memory is similar to the Micron M25PE80. Note: In order to achieve the specified

sleep current for the module, it is necessary to send a Deep Power-Down command to the Flash memory.

See http://www.micron.com for more information on the instruction set.

ANTENNA

The MeshConnect EM357 Module includes an integrated Printed Circuit Board (PCB) trace antenna. An optional

U.FL connector can be specified, providing connection to a 50-ohm external antenna of the user ’s choice. However,

use of an external antenna is not covered by the module's certification; see Ordering Information on Page 1.

For optimum antenna performance, the MeshConnect EM357 Module should be mounted with the PCB trace

antenna overhanging the edge of the host board. To further improve performance, a ground plane may be placed

on the host board under the module up to the antenna. The installation of an uninterrupted ground plane on a

layer directly beneath the module will also allow you to run traces under this layer. CEL can provide assistance

with your PCB layout.

The PCB antenna employs an Inverted F-Antenna topology that is compact and highly efficient. To maximize

range, an adequate ground plane must be provided on the host PCB. Correctly positioned, the ground plane on

the host PCB will contribute significantly to the antenna performance; it should not be directly under the Inverted

F-Antenna. The position of the module on the host board and overall design of the product enclosure contribute

to antenna performance. Poor design affects radiation patterns and can result in reflection, diffraction and/or

scattering of the transmitted signal.

A few design guidelines to help ensure antenna performance:

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Never place the ground plane or route copper traces directly underneath the antenna portion of the module

Never place the antenna close to metallic objects

In the overall design, ensure that wiring and other components are not placed near the antenna

Do not place the antenna in a metallic or metalized plastic enclosure

Keep plastic enclosures 1cm or more away from the antenna in any direction

Page 4

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相关代理商/技术参数

ZICM357SP0-1 功能描述:Zigbee/802.15.4模块 2.4GHz, OP=8dBm Vdd 3.6Volt Max. RoHS:否制造商:Digi International 频带:902 MHz to 928 MHz 视线范围: 数据速率: 灵敏度: 工作电源电压:2.4 V to 3.6 V 传输供电电流:215 mA 接收供电电流:26 mA 输出功率:250 mW 天线连接器类型:Wire 最大工作温度:+ 85 C 尺寸:32.94 mm x 22 mm x 2.03 mm

ZICM357SP0-1-B 功能描述:Zigbee/802.15.4模块 2.4GHz, OP=8dBm Vdd 3.6Volt Max. RoHS:否制造商:Digi International 频带:902 MHz to 928 MHz 视线范围: 数据速率: 灵敏度: 工作电源电压:2.4 V to 3.6 V 传输供电电流:215 mA 接收供电电流:26 mA 输出功率:250 mW 天线连接器类型:Wire 最大工作温度:+ 85 C 尺寸:32.94 mm x 22 mm x 2.03 mm

ZICM357SP0-1C 功能描述:Zigbee/802.15.4模块 2.4GHz, OP=8dBm Vdd 3.6Volt Max. RoHS:否制造商:Digi International 频带:902 MHz to 928 MHz 视线范围: 数据速率: 灵敏度: 工作电源电压:2.4 V to 3.6 V 传输供电电流:215 mA 接收供电电流:26 mA 输出功率:250 mW 天线连接器类型:Wire 最大工作温度:+ 85 C 尺寸:32.94 mm x 22 mm x 2.03 mm

ZICM357SP0-1C-B 功能描述:Zigbee/802.15.4模块 2.4GHz, OP=8dBm Vdd 3.6Volt Max. RoHS:否制造商:Digi International 频带:902 MHz to 928 MHz 视线范围: 数据速率: 灵敏度: 工作电源电压:2.4 V to 3.6 V 传输供电电流:215 mA 接收供电电流:26 mA 输出功率:250 mW 天线连接器类型:Wire 最大工作温度:+ 85 C 尺寸:32.94 mm x 22 mm x 2.03 mm

ZICM357SP0-1C-ES 功能描述:Zigbee/802.15.4模块 2.4GHz, OP=8dBm Vdd 3.6Volt Max. RoHS:否制造商:Digi International 频带:902 MHz to 928 MHz 视线范围: 数据速率: 灵敏度: 工作电源电压:2.4 V to 3.6 V 传输供电电流:215 mA 接收供电电流:26 mA 输出功率:250 mW 天线连接器类型:Wire 最大工作温度:+ 85 C 尺寸:32.94 mm x 22 mm x 2.03 mm

ZICM357SP0-1-ES 功能描述:Zigbee/802.15.4模块 2.4GHz, OP=8dBm Vdd 3.6Volt Max. RoHS:否制造商:Digi International 频带:902 MHz to 928 MHz 视线范围: 数据速率: 灵敏度: 工作电源电压:2.4 V to 3.6 V 传输供电电流:215 mA 接收供电电流:26 mA 输出功率:250 mW 天线连接器类型:Wire 最大工作温度:+ 85 C 尺寸:32.94 mm x 22 mm x 2.03 mm

ZICM357SP2-1 功能描述:Zigbee/802.15.4模块 2.4GHz, OP=20dBm Vdd 3.6Volt Max. RoHS:否制造商:Digi International 频带:902 MHz to 928 MHz 视线范围: 数据速率: 灵敏度: 工作电源电压:2.4 V to 3.6 V 传输供电电流:215 mA 接收供电电流:26 mA 输出功率:250 mW 天线连接器类型:Wire 最大工作温度:+ 85 C 尺寸:32.94 mm x 22 mm x 2.03 mm

ZICM357SP2-1-B 功能描述:Zigbee/802.15.4模块 2.4GHz, OP=20dBm Vdd 3.6Volt Max. RoHS:否制造商:Digi International 频带:902 MHz to 928 MHz 视线范围: 数据速率: 灵敏度: 工作电源电压:2.4 V to 3.6 V 传输供电电流:215 mA 接收供电电流:26 mA 输出功率:250 mW 天线连接器类型:Wire 最大工作温度:+ 85 C 尺寸:32.94 mm x 22 mm x 2.03 mm