ATmega256RZAV Atmel Corporation, ATmega256RZAV Datasheet - Page 343

• Manufacturer Part Number: ATmega256RZAV
• Manufacturer: Atmel Corporation

Specifications of ATmega256RZAV

• Flash (kbytes): 256 Kbytes
• Max. Operating Frequency: 16 MHz
• Max I/o Pins: 54
• Spi: 3
• Twi (i2c): 1
• Uart: 2
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Crypto Engine: No
• Sram (kbytes): 8
• Eeprom (bytes): 4096
• Operating Voltage (vcc): 1.8 to 3.6
• Timers: 6
• Frequency Band: 2.4 GHz
• Max Data Rate (mb/s): 0.25
• Antenna Diversity: No
• External Pa Control: No
• Power Output (dbm): 3
• Receiver Sensitivity (dbm): -101
• Receive Current Consumption (ma): 16.0
• Transmit Current Consumption (ma): 17.0
• Link Budget (dbm): 104

30.7.5
2549N–AVR–05/11
Programming the EEPROM
K. End Page Programming
1. 1. Set XA1, XA0 to “10”. This enables command loading.
2. Set DATA to “0000 0000”. This is the command for No Operation.
3. Give XTAL1 a positive pulse. This loads the command, and the internal write signals are
Figure 30-2. Addressing the Flash Which is Organized in Pages
Note:
Figure 30-3. Programming the Flash Waveforms
Note:
The EEPROM is organized in pages, see
EEPROM, the program data is latched into a page buffer. This allows one page of data to be
programmed simultaneously. The programming algorithm for the EEPROM data memory is as
reset.
RESET +12V
RDY/BSY
PAGEL
XTAL1
1. PCPAGE and PCWORD are listed in
DATA
1. “XX” is don’t care. The letters refer to the programming description above.
XA1
XA0
BS1
BS2
WR
OE
PROGRAM MEMORY
0x10
PROGRAM
COUNTER
A
PAGE
ADDR. LOW
PAGE ADDRESS
WITHIN THE FLASH
B
PCMSB
DATA LOW
C
PCPAGE
DATA HIGH
ATmega640/1280/1281/2560/2561
D
XX
E
ADDR. LOW
B
PAGEMSB
PCWORD
Table 30-8 on page
Table 30-7 on page
DATA LOW
C
WORD ADDRESS
WITHIN A PAGE
(1)
F
DATA HIGH
D
INSTRUCTION WORD
XX
E
PAGE
ADDR. HIGH
338.
G
(1)
338. When programming the
ADDR. EXT.H
H
I
XX
PCWORD[PAGEMSB:0]:
00
01
02
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