ATMEGA128RFA1-ZU Atmel, ATMEGA128RFA1-ZU Datasheet - Page 455

• 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

30.6 Self-Programming the Flash
8266B-MCU Wireless-03/11
Since the Flash is organized in pages (see
Counter can be treated as having two different sections. One section, consisting of the
least significant bits, is addressing the words within a page, while the most significant
bits are addressing the pages. This is shown in
Erase and Page Write operations are addressed independently. Therefore it is of major
importance that the Boot Loader software addresses the same page in both the Page
Erase and Page Write operation. Once a programming operation is initiated, the
address is latched and the Z-pointer can be used for other operations.
The (E)LPM instruction uses the Z-pointer to store the address. Since this instruction
addresses the Flash byte-by-byte, also bit Z0 of the Z-pointer is used.
Figure 30-3. Addressing the Flash during SPM
Note:
The program memory is updated in a page by page fashion. Before programming a
page with the data stored in the temporary page buffer, the page must be erased. The
temporary page buffer is filled one word at a time using SPM. The buffer must be filled
before the Page Write command.
Required sequence for self-programming the Flash:
• Perform a Page Erase,
• Fill temporary page buffer,
• Perform a Page Write;
If only a part of the page needs to be changed, the rest of the page must be stored
before the erase, and then be rewritten. The temporary page buffer can be accessed in
a random sequence. It is essential that the page address used in both the Page Erase
Z - REGISTER
PROGRAM MEMORY
BIT
1. The different variables used in
PAGE
PROGRAM
COUNTER
page 461
15
PAGE ADDRESS
WITHIN THE FLASH
ZPCMSB
PCMSB
.
PCPAGE
ZPAGEMSB
PAGEMSB
PCWORD
Figure 30-3 above
WORD ADDRESS
WITHIN A PAGE
"Table 31-7" on page
1
Figure 30-3
0
0
INSTRUCTION WORD
ATmega128RFA1
PAGE
are listed in
below. Note that the Page
468), the Program
Table 30-6 on
PCWORD[PAGEMSB:0]:
00
01
02
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