AT86RF212-ZU Atmel, AT86RF212-ZU Datasheet - Page 115

• Manufacturer Part Number: AT86RF212-ZU
• Description: IC TXRX ZIGBE/802.15.4/ISM 32QFN
• Manufacturer: Atmel

Specifications of AT86RF212-ZU

• Frequency: 700MHz, 800MHz, 900MHz
• Data Rate - Maximum: 250kbps
• Modulation Or Protocol: 802.15.4 Zigbee, 6LoWPAN, ISM
• Applications: ISM, ZigBee™
• Power - Output: 10dBm
• Sensitivity: -110dBm
• Voltage - Supply: 1.8 V ~ 3.6 V
• Current - Receiving: 9.2mA
• Current - Transmitting: 25mA
• 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: 769 MHz to 935 MHz
• Interface Type: SPI
• Noise Figure: 7 dB
• Output Power: 21 dB
• Operating Supply Voltage: 1.8 V, 3 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Maximum Supply Current: 25 mA
• Minimum Operating Temperature: - 40 C
• Modulation: OQPSK
• Protocol Supported: 802.15.4
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

7.6 Battery Monitor (BATMON)
7.6.1 Overview
7.6.2 Configuration
7.6.3 Data Interpretation
7.6.4 Interrupt Handling
8168C-MCU Wireless-02/10
The main features of the battery monitor are:
• Configurable voltage threshold from 1.7 V to 3.675 V
• Generation of an interrupt when supply voltage drops below the threshold
• Current state can be monitored in a register bit
The battery monitor (BATMON) detects and indicates a low 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 7-14.
Figure 7-14. Simplified Schematic of BATMON
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 register bit BATMON_OK of register 0x11 (BATMON) represents the current value
of the supply voltage:
• If BATMON_OK = 0, the supply voltage is lower than the threshold voltage.
• If BATMON_OK = 1, the supply voltage is higher than the threshold 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).
A supply voltage drop below the configured threshold value is indicated by interrupt
IRQ_7 (BAT_LOW), see section 4.7. Note that the interrupt is issued only if
BATMON_OK changes from 1 to 0.
No interrupt is generated when
AT86RF212
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