ATMEGA128RZAV-8AU Atmel, ATMEGA128RZAV-8AU Datasheet - Page 63

• Manufacturer Part Number: ATMEGA128RZAV-8AU
• Description: MCU ATMEGA1281/AT86RF230 64-TQFP
• Manufacturer: Atmel
• Series: ATMEGAr

Specifications of ATMEGA128RZAV-8AU

• Frequency: 2.4GHz
• Data Rate - Maximum: 2Mbps
• Modulation Or Protocol: 802.15.4 Zigbee
• Applications: General Purpose
• Power - Output: 3dBm
• Sensitivity: -101dBm
• Voltage - Supply: 1.8 V ~ 3.6 V
• Data Interface: PCB, Surface Mount
• Memory Size: 128kB 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
• Operating Temperature Range: - 40 C to + 85 C
• For Use With: 770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAG770-1005 - ISP 4PORT FOR ATMEL AVR MCU JTAG770-1004 - ISP 4PORT FOR ATMEL AVR MCU SPIATAVRISP2 - PROGRAMMER AVR IN SYSTEMATJTAGICE2 - AVR ON-CHIP D-BUG SYSTEMATSTK501 - ADAPTER KIT FOR 64PIN AVR MCUATSTK500 - PROGRAMMER AVR STARTER KIT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Operating Temperature: -
• Current - Transmitting: -
• Current - Receiving: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: ATmega128

9.4.2 Configure the Voltage Regulators
9.4.3 Data Interpretation
9.4.4 Register Description
5131E-MCU Wireless-02/09
Bit
0x10
Read/Write
Initial value
Bit
0x10
Read/Write
Initial value
The voltage regulators can be configured by the register 0x10 (VREG_CTRL).
It is recommended to use the internal regulators, but it is also possible to supply the low
voltage domains by an external voltage source. For this configuration, the internal
regulators need to be switched off by setting the register bits to the values
AVREG_EXT = 1 and DVREG_EXT = 1. A regulated external supply voltage of 1.8V
needs to be connected to the pins DVDD and AVDD. When turning on the external
supply, ensure a sufficiently long stabilization time before interacting with the
AT86RF230.
The status bit values AVDD_OK = 1 and DVDD_OK = 1 indicate an enabled and stable
internal supply voltage. Reading 0 indicates a disabled or unstable internal supply
voltage.
Register 0x10 (VREG_CTRL)
This register VREG_CTRL controls the use of the voltage regulators and indicates the
status of these.
• Bit 7 – AVREG_EXT
The register bit AVREG_EXT defines whether the internal analog voltage regulator or
an external regulator is used to supply the analog low voltage building blocks of the
radio transceiver.
Table 9-2. Regulated Voltage Supply Control for Analog Building Blocks
• Bit 6 – AVDD_OK
This register bit AVDD_OK indicates if the internal 1.8V regulated supply voltage AVDD
has settled. The bit is set to logic high, if AVREG_EXT = 1.
Table 9-3 Regulated Voltage Supply Control for Analog Building Blocks
Register Bit
AVREG_EXT
Register Bit
AVDD_OK
AVREG_EXT
DVREG_EXT
R/W
R/W
7
0
3
0
Value
Value
0
1
0
1
AVDD_OK
DVDD_OK
R
R
6
0
2
0
Description
Use internal voltage regulator
Use external voltage regulator, internal voltage
regulator is disabled
Description
Analog voltage regulator disabled or supply voltage not
stable
Analog supply voltage has settled
R/W
R/W
5
0
1
0
Reserved
Reserved
R/W
R/W
AT86RF230
4
0
0
0
VREG_CTRL
VREG_CTRL
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