AT86RF231-ZU Atmel, AT86RF231-ZU Datasheet - Page 113

• Manufacturer Part Number: AT86RF231-ZU
• Description: IC TXRX ZIGBE/802.15.4/ISM 32QFN
• Manufacturer: Atmel

Specifications of AT86RF231-ZU

• Frequency: 2.4GHz
• Data Rate - Maximum: 2Mbps
• Modulation Or Protocol: 802.15.4 Zigbee, 6LoWPAN, RF4CE, SP100, WirelessHART™, ISM
• Applications: Industrial Monitoring and Control, Wireless Alarm and Security Systems
• Power - Output: -17dBm ~ 3dBm
• Sensitivity: -101dBm
• Voltage - Supply: 1.8 V ~ 3.6 V
• Current - Receiving: 12.3mA
• Current - Transmitting: 14mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
• Number Of Receivers: 1
• Number Of Transmitters: 1
• Wireless Frequency: 2405 MHz to 2480 MHz
• Interface Type: SPI
• Noise Figure: 6 dB
• Output Power: 20 dB
• Operating Supply Voltage: 2.5 V, 3.3 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Maximum Supply Current: 12.3 mA
• Minimum Operating Temperature: - 40 C
• Modulation: OQPSK
• Protocol Supported: 802.15.4
• Transmitting Current: 11.6mA
• Data Rate: 2Mbps
• Frequency Range: 2.405GHz To 2.48GHz
• Modulation Type: O-QPSK
• Sensitivity Dbm: -101dBm
• Rf Ic Case Style: QFN
• No. Of Pins: 32
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

9.5
9.5.1
9.5.2
9.5.3
8111C–MCU Wireless–09/09
Battery Monitor (BATMON)
Overview
Configuration
Data Interpretation
The main features of the battery monitor are:
The battery monitor (BATMON) detects and indicates a low supply voltage of the external supply
voltage at pin 28 (EVDD). This is done by comparing the voltage on the external supply pin 28
(EVDD) with a configurable internal threshold voltage. A simplified schematic of the BATMON
with the most important input and output signals is shown in
Figure 9-6.
The BATMON can be configured using the register 0x11 (BATMON). Register subfield
BATMON_VTH sets the threshold voltage. It is configurable with a resolution of 75 mV in the
upper voltage range (BATMON_HR = 1) and with a resolution of 50 mV in the lower voltage
range (BATMON_HR = 0), for details refer to register 0x11 (BATMON).
The signal bit BATMON_OK of register 0x11 (BATMON) monitors the current value of the bat-
tery voltage:
After setting a new threshold, the value BATMON_OK should be read out to verify the current
supply voltage value.
Note, the battery monitor is inactive during P_ON and SLEEP states, see status register 0x01
(TRX_STATUS).
• Configurable voltage threshold range: 1.7V to 3.675V
• Generates an interrupt when supply voltage drops below a threshold
• If BATMON_OK = 0, the battery voltage is lower than the threshold voltage
• If BATMON_OK = 1, the battery voltage is higher than the threshold voltage
BATMON_VTH
BATMON_HR
4
Simplified Schematic of BATMON
For input-to-output mapping
see control register
0x11 (BATMON)
DAC
Threshold
EVDD
Voltage
+
-
Figure 9-6 on page
„1“
BATMON_OK
D
clear
Q
AT86RF231
BATMON_IRQ
113.
113