ATMEGA128RFA1-ZU Atmel, ATMEGA128RFA1-ZU Datasheet - Page 116

• Manufacturer Part Number: ATMEGA128RFA1-ZU
• Description: IC AVR MCU 2.4GHZ XCEIVER 64QFN
• Manufacturer: Atmel
• Series: ATMEGAr

Specifications of ATMEGA128RFA1-ZU

• Frequency: 2.4GHz
• Data Rate - Maximum: 2Mbps
• Modulation Or Protocol: 802.15.4 Zigbee
• Applications: General Purpose
• Power - Output: 3.5dBm
• Sensitivity: -100dBm
• Voltage - Supply: 1.8 V ~ 3.6 V
• Current - Receiving: 12.5mA
• Current - Transmitting: 14.5mA
• Data Interface: PCB, Surface Mount
• Memory Size: 128kB Flash, 4kB EEPROM, 16kB RAM
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-VFQFN, Exposed Pad
• Rf Ic Case Style: QFN
• No. Of Pins: 64
• Supply Voltage Range: 1.8V To 3.6V
• Operating Temperature Range: -40°C To +85°C
• Svhc: No SVHC (15-Dec-2010)
• Rohs Compliant: Yes
• Processor Series: ATMEGA128x
• Core: AVR8
• Data Bus Width: 8 bit
• Program Memory Type: Flash
• Program Memory Size: 128 KB
• Data Ram Size: 16 KB
• Interface Type: JTAG
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 38
• Number Of Timers: 6
• Operating Supply Voltage: 1.8 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVR128RFA1-EK1
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

9.12.21 BATMON – Battery Monitor Control and Status Register
116
ATmega128RFA1
Table 9-53 DVDD_OK Register Bits
• Bit 1:0 – DVREG_TRIM1:0 - Reserved
Table 9-54 DVREG_TRIM Register Bits
This register configures the battery monitor to observe the supply voltage at EVDD. The
status of the EVDD supply voltage is accessible by reading bit BATMON_OK with
respect to the actual BATMON settings. Furthermore the Battery Monitor Interrupt can
be controlled with the bits BAT_LOW and BAT_LOW_EN similar to the function of the
IRQ_STATUS and IRQ_MASK register for other radio transceiver interrupts.
• Bit 7 – BAT_LOW - Battery Monitor Interrupt Status
A BATMON Interrupt is pending if this bit is set. Writing one to this bit if it has been at
one will clear the interrupt.
• Bit 6 – BAT_LOW_EN - Battery Monitor Interrupt Enable
The Battery Monitor Interrupt is enabled if this bit is set to one. The Battery Monitor will
not generate an interrupt if this bit is zero.
• Bit 5 – BATMON_OK - Battery Monitor Status
The register bit BATMON_OK indicates the level of the external supply voltage with
respect to the programmed threshold BATMON_VTH.
Table 9-55 BATMON_OK Register Bits
• Bit 4 – BATMON_HR - Battery Monitor Voltage Range
This bit sets the range and resolution of the battery monitor.
Bit
NA ($151)
Read/Write
Initial Value
Bit
NA ($151)
Read/Write
Initial Value
Register Bits
DVDD_OK
Register Bits
DVREG_TRIM1:0
Register Bits
BATMON_OK
BATMON_VTH3
BAT_LOW
RW
RW
7
0
3
0
BATMON_VTH2
BAT_LOW_EN
RW
RW
6
0
2
0
Value
Value
Value
0
1
0
1
2
3
0
1
BATMON_VTH1
BATMON_OK
Description
Digital voltage regulator disabled or supply
voltage not stable
Digital supply voltage has settled
Description
1.80V
1.75V
1.84V
1.88V
Description
The battery voltage is below the threshold.
The battery voltage is above the threshold.
RW
R
5
0
1
1
BATMON_VTH0
BATMON_HR
RW
RW
4
0
0
0
8266A-MCU Wireless-12/09
BATMON
BATMON