ATmega1281R231 Atmel Corporation, ATmega1281R231 Datasheet - Page 329

• Manufacturer Part Number: ATmega1281R231
• Manufacturer: Atmel Corporation

Specifications of ATmega1281R231

• Flash (kbytes): 128 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: AES
• 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): 2
• Antenna Diversity: Yes
• External Pa Control: Yes
• Power Output (dbm): 3
• Receiver Sensitivity (dbm): -101
• Receive Current Consumption (ma): 13.2
• Transmit Current Consumption (ma): 14.4
• Link Budget (dbm): 104

2549N–AVR–05/11
Table 29-8.
Note:
Table 29-9.
Note:
Section
Read-While-Write section (RWW)
No Read-While-Write section (NRWW)
Variable
PCMSB
PAGEMSB
ZPCMSB
ZPAGEMSB
PCPAGE
PCWORD
1. For details about these two section, see
1. Z0: should be zero for all SPM commands, byte select for the (E)LPM instruction.
2. See
(1)
318
Z-pointer during Self-Programming.
Read-While-Write Limit, ATmega640
Explanation of different variables used in
ping to the Z-pointer, ATmega640
and
“Addressing the Flash During Self-Programming” on page 322
PC[14:7]
PC[6:0]
“RWW – Read-While-Write Section” on page
14
6
ATmega640/1280/1281/2560/2561
Corresponding
Z-value
Z15:Z8
Z7:Z1
Z15
Z7
(2)
“NRWW – No Read-While-Write Section” on page
Description
Most significant bit in the Program Counter.
(The Program Counter is 15 bits PC[14:0]).
Most significant bit which is used to address
the words within one page (128 words in a
page requires seven bits PC [6:0]).
Bit in Z-pointer that is mapped to PCMSB.
Because Z0 is not used, the ZPCMSB equals
PCMSB + 1.
Bit in Z-pointer that is mapped to PCMSB.
Because Z0 is not used, the ZPAGEMSB
equals PAGEMSB + 1.
Program Counter page address: Page select,
for Page Erase and Page Write.
Program Counter word address: Word select,
for filling temporary buffer (must be zero
during Page Write operation).
Pages
224
32
Figure 29-3 on page 322
318.
(1)
Address
0x0000 - 0x6FFF
0x7000 - 0x7FFF
for details about the use of
and the map-
329