ATmega1284P Atmel Corporation, ATmega1284P Datasheet - Page 294

• Manufacturer Part Number: ATmega1284P
• Manufacturer: Atmel Corporation

Specifications of ATmega1284P

• Flash (kbytes): 128 Kbytes
• Pin Count: 44
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 32
• Ext Interrupts: 32
• Usb Speed: No
• Usb Interface: No
• Spi: 3
• Twi (i2c): 1
• Uart: 2
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 16
• Eeprom (bytes): 4096
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8 to 5.5
• Operating Voltage (vcc): 1.8 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 3
• Output Compare Channels: 6
• Input Capture Channels: 1
• Pwm Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

26.8.17
In
Table 26-16. Boot Size Configuration
Note:
Table 26-17. Read-While-Write Limit
Note:
Table 26-18. Explanation of different variables used in
Note:
See
Programming.
8272C–AVR–06/11
BOOTSZ1
Section
Read-While-Write section (RWW)
No Read-While-Write section (NRWW)
Variable
PCMSB
PAGEMSB
ZPCMSB
ZPAGEMSB
PCPAGE
PCWORD
Table 26-16
”Addressing the Flash During Self-Programming” on page 284
1
1
0
0
1. The different BOOTSZ Fuse configurations are shown in
1. For details about these two section, see
1. Z0: should be zero for all SPM commands, byte select for the (E)LPM instruction.
ATmega1284/ATmega1284P Boot Loader Parameters
Write Section” on page
BOOTSZ0
through
1
0
1
0
PC[15:7]
PC[6:0]
15
6
Table
Boot Size
1024 words
2048 words
4096 words
512 words
26-18, the parameters used in the description of the Self-Programming are given.
Corresponding
280.
Z-value
Z16:Z8
Z7:Z1
Z16
Z7
(1)
(1)
Pages
ATmega164A/PA/324A/PA/644A/PA/1284/P
16
32
4
8
”NRWW – No Read-While-Write Section” on page 280
Application
Flash Section
0x0000 - 0xFDFF
0x0000 - 0xFBFF
0x0000 - 0xF7FF
0x0000 - 0xEFFF
Description
Most significant bit in the Program Counter. (The Program Counter is 16 bits
PC[15:0])
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)
Figure 26-3 on page 284
(1)
Figure 26-2 on page
Pages
480
32
Boot Loader
Flash Section
0xFE00 - 0xFFFF
0xFC00 - 0xFFFF
0xF800 - 0xFFFF
0xF000 - 0xFFFF
for details about the use of Z-pointer during Self-
282.
and the mapping to the Z-pointer
End Application
Section
0xFDFF
0xFBFF
0xF7FF
0xEFFF
Address
0x0000 - 0xEFFF
0xF000 - 0xFFFF
and
”RWW – Read-While-
Boot Reset
Address
(Start Boot
Loader Section)
0xFE00
0xFC00
0xF800
0xF000
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