The EM260 from Ember is a ZigBee Network Co-Processor that combines a 2.4GHz IEEE 802.15.4 compliant radio transceiver with a flash-based microprocessor running the EmberZNet ZigBee stack. With a fast SPI-based interface to an application microprocessor, the EM260 allows developers to easily add ZigBee networking to their favorite microcontroller. The EM260 handles all of the timing critical and resource intensive ZigBee networking stack, allowing the application microprocessor to focus solely on application requirements.
The radio in the EM260 provides best-in-class RF performance with excellent sensitivity and transmit power for long range, and 802.11 immunity. A flexible RF interface minimizes external components in configurations with or without external LNA/PAs.
The EM260 provides a SPI-based serial interface (EZSP - EmberZNet Serial Protocol) to the EmberZNet APIs. The ZigBee compliant EmberZNet stack, in combination with the EM260 is optimized for designs requiring long battery life, low external component count, and a reliable, proven, industry-standard networking solution. Innovative on-chip debugging (Insight Port) provides developers with the most advanced view into their application and network available in the industry.
- Network Co-Processor
- Handles all EmberZNet ZigBee stack processing
- EZSP (EmberZNet Serial Protocol) SPI interface to access EmberZNet API
- Isolates timing critical ZigBee functions (routing, etc) from the application processor, easing development
- Prevents resource conflicts between ZigBee stack and user application by separating ZigBee stack processing
- Flash-based for easy upgrades
- On-chip battery/supply voltage monitor
- Ultra-low power sleep current with sleep timer running (<1uA) - can wake application processor from deep sleep
- 2.4GHz IEEE 802.15.4 Compliant Transciever
- -97dBm recieve sensitivity
- +3dBm transmit power (+5dBm boost)
- Excellent 802.11b/g rejection and interference immunity
- Integrated TX/RX switch, minimizing external components
- Optional 2nd RF path for easy addition of external PA/LNA
- Single external crystal (24MHz)
- On-chip regulator for 2.1-3.6V operation
- Small 6x6mm QFN-40 package
- InSight Port for advanced network debugging w/ InSight Desktop
- PacketTrace (non-intrusive trace of all packets)
- API Trace - trace of all EmberZNet API calls
- Virtual UART - high-speed memory mapped debugging UART
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| Block Diagram |
Circuit Diagram |
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| Click Images to Enlarge |
| Deep Sleep Current (with sleep timer running) |
1uA max |
|
RX Current
|
35.5 mA - Normal Mode
37.5 mA - Boost Mode |
| TX Current |
35.5 mA - Normal Mode
41.5 mA - Boost Mode |
| Crystal Frequency |
24MHz |
| Operating Temperature Range |
-40° to +85° C |
| Voltage (internal reg) |
2.1 to 3.6V |
| Package |
6mm x 6mm, 40 pin QFN |
| Data Rate |
250kbps |
|
Frequency
|
2400 MHz to 2485 MHz |
| RX Sensitivity |
-97 dBm - Normal Mode; -98 dBm Boost Mode |
| Adj Channel Rejection (15.4) |
>30dB |
| Alt Channel Rejection (15.4) |
>40dB |
| 802.11g Rejection (+12/-13 MHz) |
(+12/-13MHz) >30dB |
| TX Power |
-32dBm - +3dBm Normal
-32dBm - +5dBm Boost |
For further information, please see the Documentation Page. | 
