ATMEGA128RFA1-ZU Atmel, ATMEGA128RFA1-ZU Datasheet - Page 40

• 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

Figure 9-13. Timing of TRX24_RX_START, TRX24_XAH_AMI, TRX24_TX_END and TRX24_RX_END Interrupts in
Basic Operating Mode
9.4.1.4 Basic Operating Mode Timing
9.4.1.4.1 Wake-up Procedure
40
T R X _ S T A T E
S L P T R
T y p . P r o c e s s i n g D e l a y
N u m b e r o f O c t e t s
F r a m e C o n t e n t
T R X _ S T A T E
I R Q
I n t e r r u p t l a t e n c y
I R Q
ATmega128RFA1
P L L _ O N
- 1 6
0
1 6 µ s
The following paragraphs depict state transitions and their timing properties. Timing
figures are explained in
Characteristics" on page 511.
The wake-up procedure from radio transceiver SLEEP state is shown in
below. This figure implies, that the microcontroller is already running and hence, the
digital voltage regulator is enabled. If the microcontroller clock source is set to
Transceiver Clock, the crystal oscillator is also running, which reduces the radio
transceiver wake-up time further. For information about the wake-up timing of the
microcontroller, depending on the different clock source options, refer to
and Clock Options" on page
In order to calculate the total wake-up delay from microcontroller sleep mode (see
"Power Management and Sleep Modes" on page
time, including the voltage regulator ramp-up and the radio transceiver wake-up time
has to be added.
Figure 9-14. Wake-up Procedure from Transceiver SLEEP State
The radio transceiver SLEEP state is left by releasing bit SLPTR to “0”. This restarts the
XOSC if it is not already running. After t
page 43) the radio transceiver enters TRX_OFF state. If the XOSC is already running,
the radio transceiver enters TRX_OFF state after 25 µs.
Event
State
Block
Tim e
R X _ O N
P r e a m b l e
4
SLEEP
0
SLPTR = 0
XOSC startup
1 2 8
S F D
1
1 6 0
Table 9-3 on
P H R
100
B U S Y _ T X
1
148.
1 9 2
t
TR2
T R X 2 4 _ R X _ S T A R T
M H R
t
I R Q
7
200
TR2
page 43 and section
FTN
= 215 µs + 25 µs = 240 µs (see
TRX24_AW AKE IRQ
TRX_OFF
XOSC enabled
B U S Y _ R X
T R X 2 4 _ X A H _ A M I
M S D U
t
I R Q
157), the microcontroller wake-up
m
T R X 2 4 _ T X _ E N D
"Digital Interface Timing
1 9 2 + ( 9 + m ) * 3 2
400
F C S
2
8266B-MCU Wireless-03/11
P L L _ O N
R X _ O N
"System Clock
T R X 2 4 _
R X _ E N D
Table 9-3 on
t
I R Q
Figure 9-14
Time [µs]
T i m e [ µ s ]