SubG Hz SoC

Sub-GHz RF Transceiver ARM-M0+ System-on-Chip with NFC (High Tx Power)

ER81W3 Technical Highlights

ER81WX is a family of high performance, high flexibility, low power RF transceiver SOC for IOT applications. ER81WX covers 127/433/470/510/868/915MHz ISM bands in sub-GHz frequency spectrum. In addition to supporting Sub-GHz band for long range connectivity, the product also comes with NFC, which is compliant with ISO/IEC 14443-3 standard (Type A), to provide contactless short range connectivity to mobile device. The EliteRadio‐ER81WX transceiver SOC realizes long range wireless data communication with high data rate up to 2Mbps. Its proprietary on‐chip power amplifier optimizes power consumption for applications that require high output power up to +23dBm. ER81WX has excellent Rx performance in sensitivity (-102dbm sensitivity @ 100Kbps/ 915Mhz/ FSK). It provides multiple working power management modes with low RF receive current (Rx: 16mA@915MHz) as well as wake on RX (WOR) without MCU involvement to extend the lifespan of battery operated devices such as electronic shelf labels, smart meters and disposable wireless sensors.

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32-bit ARM® CortexTM-M0+ CPU

64KB ROM 4KB SRAM

Support 127/433/470/510/868/915MHz ISM bands

Configuraale Data Rate and Tx power

BPSK / FSK / GFSK Modulation

Diverse I/O ports

High RF Rx Sensitivity

2.5V - 3.6V operating voltage

Support NFC ISO14443-3 Type A

Complete DVK

Small Package Size

Tx power: +23dBm

Applications:

  1. Electric Shelf Lables, ESL.
  2. Smart Meter.
  3. Logistic Tracking.
  4. Wireless Sensor Networks.

Specifications

ER81W3

MCU Core

32bit ARM® Cortex® M0+

Operating Voltage (V)

2.5-3.6

Frequency Range (MHz)

127 / 433 / 470 / 510 / 868 / 915

Flash

64KB

RAM

4KB

Max Output Power (dBm)

23

Current

Tx: 160mA @ 23dbm
Rx: 12mA @100kbps

NFC

Y (Passive)

Data Rate

1.25Kbps-2Mbps

Security

X (Non-Support)

Peak RX Sensitivity (dBm)

-110
(at 12.5Kbps@ 868MHz)
-122
(at 1.25Kbps@ 915MHz)

Package

4x4-32L QFN

Status

MP

Documents

NO.

File Name

Download

Document

ESMT - ER81WX series - Datasheet

Datasheet

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