ZICM357P2-1-B CEL, ZICM357P2-1-B Datasheet - Page 4

• Manufacturer Part Number: ZICM357P2-1-B
• Description: MOD EM357 ZIG 802.15.4 PCB ANT
• Manufacturer: CEL

Specifications of ZICM357P2-1-B

• Frequency: 2.405GHz ~ 2.475GHz
• Data Rate - Maximum: 250kbps
• Modulation Or Protocol: 802.15.4 Zigbee
• Applications: Home/Building Automation, Security, ZigBee™
• Power - Output: 20dBm
• Sensitivity: -100dBm
• Voltage - Supply: 2.7 V ~ 3.6 V
• Current - Receiving: 28mA
• Current - Transmitting: 170mA
• Data Interface: PCB, Surface Mount
• Memory Size: 192kB Flash, 12kB RAM
• Antenna Connector: On-Board, Trace
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Wireless Frequency: 2483.5 MHz
• Interface Type: SPI, TWI, UART
• Security: AES
• Operating Voltage: 3.6 V
• Output Power: 20 dBm
• Antenna: PCB Trace
• Operating Temperature Range: - 40 C to + 85 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: EM357
• Other names: ZICM357P2-1; ZICM357P2-1

TRANSCEIVER IC
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 Ember EM357 IC, visit
ADDITIONAL FLASH MEMORY
The MeshConnect EM357 module incorporates an additional 1MB external Flash memory for Over-The-Air program up-
dates. The Flash memory communicates over the EM357’s second serial controller using SPI. The flash memory is wired
to the following castellation pins:
PA0 - SC2MOSI
PA1 - SC2MISO
PA2 - SC2SCLK
PA3 - SC2nSSEL
WP - Flash memory Write Protect line (has internal pull-up resistor, but not connected to the EM357) EM357 Module pin number 2
The instruction set for the Flash memory is similar to the Micron M25P80. Note that 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
ANTENNA
CEL’s MeshConnect modules include an integrated Printed Circuit Board (PCB) trace antenna. An optional U.FL connec-
tor can be specified, providing connection to a 50-ohm external antenna of the user’s choice. See Ordering Information on
page 1.
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.
Here are some design guidelines to help ensure antenna performance:
For optimum antenna performance, the MeshConnect modules 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.
POWER AMPLIFIER
The MeshConnect EM357 Module includes a Power Amplifier (PA). This PA delivers high efficiency, high gain, and high
output power (Pout = +20.0 dBm TYP) to provide an extended range and reliable transmission for fewer nodes in a
network.
The PA is connected to the alternate EM357 IC TX output, so EM357 TX power modes 2 or 3 must be used to achieve the
specified output power.
http://www.micron.com
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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 from the antenna in any direction.
EM357 Module pin number 3
EM357 Module pin number 4
EM357 Module pin number 5
EM357 Module pin number 6
for more information on the instruction set.
http://www.ember.com
MeshConnect™ EM357 Module
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