ATMEGA256RZAV-8AU Atmel, ATMEGA256RZAV-8AU Datasheet - Page 64
![MCU ATMEGA2561/AT86RF230 64-TQFP](/photos/12/13/121332/313-64-tqfp_sml.jpg)
ATMEGA256RZAV-8AU
Manufacturer Part Number
ATMEGA256RZAV-8AU
Description
MCU ATMEGA2561/AT86RF230 64-TQFP
Manufacturer
Atmel
Series
ATMEGAr
Datasheets
1.ATMEGA640V-8CU.pdf
(38 pages)
2.ATMEGA640V-8CU.pdf
(444 pages)
3.AT86RF230-ZU.pdf
(98 pages)
Specifications of ATMEGA256RZAV-8AU
Frequency
2.4GHz
Modulation Or Protocol
802.15.4 Zigbee
Applications
ISM, ZigBee™
Power - Output
3dBm
Sensitivity
-101dBm
Voltage - Supply
1.8 V ~ 3.6 V
Current - Receiving
15.5mA
Current - Transmitting
16.5mA
Data Interface
PCB, Surface Mount
Memory Size
256kB Flash, 4kB EEPROM, 8kB RAM
Antenna Connector
PCB, Surface Mount
Package / Case
64-TQFP
Wireless Frequency
2.4 GHz
Interface Type
JTAG, SPI
Output Power
3 dBm
For Use With
ATAVRISP2 - PROGRAMMER AVR IN SYSTEM
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Operating Temperature
-
Data Rate - Maximum
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
For Use With/related Products
ATmega256
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