Features

Internal Microcontroller System

8-Bit AVR Microcontroller Core and Firmware Library in ROM
20-Kbyte Flash Program Memory for Customer Applications and 2-Kbyte SRAM (1 Kbyte for Customer Applications)
1-Kbyte EEPROM for Up to Four Service Configurations

Supported RF Ranges

Low Band 310 MHz to 318 MHz, Low Band 418 MHz to 477 MHz, and High Band 836 MHz to 928 MHz
315.00 MHz/433.92 MHz/868.30 MHz and 915 MHz with one 24.305 MHz Crystal

Current Consumption

5 nA in OFFMode
40 μA in SleepMode
6.5 mA in RXMode (434 MHz, VS = 5V, Internal DC-DC Converter Active)
7.8 mA/10.8 mA in TXMode (434 MHz, P_OUT = 6 dBm/10 dBm, VS = 5V, Internal DC-DC Converter Active)
Three-Channel PollingMode
- 450 μA with 50 ms Polling Cycle
- 900 μA with 21 ms Polling Cycle

Receiver

Demodulation
- Amplitude Shift Keying (ASK) / On Off Keying (OOK)
- Frequency Shift Keying (FSK) (Deviation ±0.375 kHz to ±93 kHz)
Decoding
- Non-Return-to-Zero (NRZ) at 1 Kbit/s to 160 Kbits/s
- Manchester at 500 bits/s to 80 Kbits/s
Sensitivity (Manchester Coded) at 433.92 MHz
- ASK: -127 dBm at 0.5 Kbits/s, BWIF = 25 kHz
- ASK: -112 dBm at 20 Kbits/s, BWIF = 80 kHz
- FSK: -124 dBm at 0.75 Kbits/s, Δf = ±0.75 kHz, BWIF = 25 kHz
- FSK: -113 dBm at 10 Kbits/s, Δf = ±10 kHz, BWIF = 165 kHz
- FSK: -110 dBm at 20 Kbits/s, Δf = ±20 kHz, BWIF = 165 kHz
Image Rejection
- 55 dB in 315 MHz/433 MHz Band and 25 dB in 868 MHz/915 MHz Band
Blocking
- >64 dBc at 1 MHz Offset from Carrier
- >48 dBc at 225 kHz Offset from Carrier in Low-Band
Channel Filter 25 kHz to 365 kHz (Approx. 10% Steps) and Digital RSSI with Relative Accuracy of ±1 dB
Fast Receiver Synchronization ≦ 8 Symbols and Autonomous Polling, Message and ID Validation
Pattern-Based Wake-up and Start-of-Frame Identification (SFID)
Flexible EEPROM and SRAM-Based Service Configuration Concept
Double Receive Path for Parallel Telegram Search on the Same Channel (For Example, ASK/FSK)
Buffered and Transparent Reception
Flexible Polling Configuration Concerning Timing, Order and Participating Channels
Configurable 4, 8, 16-Bit CRC Check

Transmitter

Modulation
- ASK (OOK)
- FSK (Deviation ±0.375 kHz to ±93 kHz)
Coding
- NRZ at 1 Kbit/s to 160 Kbits/s
- Manchester at 500 bits/s to 80 Kbits/s
Programmable Output Power -12 dBm to +14.5 dBm in 0.4 dB Steps
Buffered and Transparent Transmission
Automatic Telegram Composition in Buffered mode
Configurable 4, 8, 16-Bit CRC Calculation
ASK and Gauss Shaping to Reduce Spectral Bandwidth of Modulated PA Output Signal

Interfaces

SPI Interface with Up to 1 Mbit/s
LIN/UART Interface to Support LIN 2.2 Compliant Communication
Configurable Event Signal Towards Host Microcontroller and Programmable Clock Output Derived from Crystal Frequency

System Timings

Extended Features

Boundary Conditions

ATA5835