AT86RF230_09 ATMEL [ATMEL Corporation], AT86RF230_09 Datasheet - Page 64
AT86RF230_09
Manufacturer Part Number
AT86RF230_09
Description
Low Power 2.4 GHz Transceiver for ZigBee, IEEE 802.15.4, 6LoWPAN, RF4CE and ISM
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT86RF230_09.pdf
(98 pages)
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9.5 Battery Monitor (BATMON)
9.5.1 Overview
64
AT86RF230
• Bit [5:4] – Reserved
• Bit 7 – DVREG_EXT
The register bit DVREG_EXT defines whether the internal digital voltage regulator or an
external regulator is used to supply the digital low voltage building blocks of the radio
transceiver.
Table 9-4. Regulated Voltage Supply Control for Digital Building Blocks
• Bit 6 – DVDD_OK
This register bit DVDD_OK indicates if the internal 1.8V regulated supply voltage DVDD
has settled. The bit is set to logic high, if DVREG_EXT = 1.
Table 9-5 Regulated Voltage Supply Control for Digital Building Blocks
• Bit [1:0] – Reserved
The main features of the battery monitor are:
• Programmable voltage threshold range: 1.7V to 3.675V
• Battery low voltage interrupt
The battery monitor (BATMON) detects and indicates a low supply voltage. This is done
by comparing the voltage on the external supply pin (EVDD) with a programmable
internal threshold voltage. A simplified schematic of the BATMON with the most
important input and output signals is shown in Figure 9-3.
Figure 9-3. Simplified Schematic of BATMON
BATMON_VTH
Register Bit
DVREG_EXT
Register Bit
DVDD_OK
BATMON_HR
4
For input-to-output mapping
see control register
0x11 (BATMON)
DAC
Value
Value
0
1
0
1
Threshold
EVDD
Voltage
Description
Use internal voltage regulator
Use external voltage regulator, internal voltage
regulator is disabled
Description
Digital voltage regulator disabled or supply voltage not
stable
Digital supply voltage has settled
+
-
„1“
BATMON_OK
D
clear
Q
5131E-MCU Wireless-02/09
BATMON_IRQ
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