ATMEGA128RFA1-ZU Atmel, ATMEGA128RFA1-ZU Datasheet - Page 34

• 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

Table 9-1. SLPTR Multi-functional Configuration bit
9.3.2 Interrupt Logic
9.3.2.1 Overview
34
Transceiver Status
PLL_ON
TX_ARET_ON
TRX_OFF
SLEEP
ATmega128RFA1
Function
TX start
TX start
Sleep
Wakeup
The register (TRXRST) can be used to reset the transceiver without resetting the
controller. After the reset bit was set, it is cleared immediately.
A second configuration bit (SLPTR) is used to control frame transmission or sleep and
wakeup of the transceiver. This bit is not cleared automatically.
The function of the SLPTR bit relates to the current state of the transceiver module and
is summarized in
section
In states PLL_ON and TX_ARET_ON, bit SLPTR is used to initiate a TX transaction.
Here bit SLPTR is sensitive on the transition from “0” to “1” only. The bit should be
cleared before the frame transmission is finished.
After initiating a state change by a “0” to “1” transition at bit SLPTR in radio transceiver
states TRX_OFF, RX_ON or RX_AACK_ON, the radio transceiver remains in the new
state as long as the bit is logical “1” and returns to the preceding state if the bit is set to
“0”.
SLEEP state
The SLEEP state is used when radio transceiver functionality is not required, and thus
the receiver module can be powered down to reduce the overall power consumption.
When the radio transceiver is in TRX_OFF state the microcontroller forces the
transceiver to SLEEP by setting SLPTR = “1”. The transceiver awakes when the
microcontroller releases bit SLPTR.
The transceiver module differentiates between eight interrupt events. Internally all
pending interrupt are stored in a separate bit of the interrupt status register
(IRQ_STATUS). Each interrupt is enabled by setting the corresponding bit in the
interrupt mask register (IRQ_MASK). If an IRQ is enabled an interrupt service routine
must be defined to handle the IRQ. A pending IRQ is cleared automatically if an
Interrupt service routine is called. It is also possible to handle IRQs manually by polling
the IRQ_STATUS register. If an IRQ occurred, the appropriate IRQ_STATUS register
bit is set. The IRQ can be cleared by writing ‘1’ to the register bit. It is recommended to
clear the corresponding status bit before enabling an interrupt.
Interrupts are not cleared automatically when the event that caused them vanishes.
More information about interrupt handling by the controller can be found in section
"Interrupts" on page
The supported interrupts for the Basic Operating Mode are summarized in
page 35.
SLPTR Bit
“0”
“0”
“0”
“1”
"Operating Modes" on page
“1”
“1”
“1”
“0”
Table 9-1
Description
Starts frame transmission
Starts TX_ARET transaction
Takes the radio transceiver into SLEEP state
Takes the radio transceiver back into TRX_OFF state;
212.
below. The radio transceiver states are explained in detail in
36.
8266B-MCU Wireless-03/11
Table 9-2 on