ATMEGA128RFA1-ZU Atmel, ATMEGA128RFA1-ZU Datasheet - Page 454

• 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
454
ATmega128RFA1
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 and the buffer can be filled
either before the Page Erase command or between a Page Erase and a Page Write
operation:
Alternative 1, fill the buffer before a Page Erase
• Fill temporary page buffer,
• Perform a Page Erase,
• Perform a Page Write;
Alternative 2, fill the buffer after Page Erase
• Perform a Page Erase,
Z - REGISTER
PROGRAM MEMORY
BIT
1. The different variables used in
PAGE
PROGRAM
COUNTER
461.
15
PAGE ADDRESS
WITHIN THE FLASH
ZPCMSB
PCMSB
PCPAGE
ZPAGEMSB
PAGEMSB
Figure 30-3 above
PCWORD
WORD ADDRESS
WITHIN A PAGE
"Table 31-7" on page
1
Figure 30-3
0
0
INSTRUCTION WORD
are listed in
PAGE
below. Note that the Page
Table 30-6 on page
8266A-MCU Wireless-12/09
467), the Program
PCWORD[PAGEMSB:0]:
00
01
02
PAGEEND