ATmega1284P Atmel Corporation, ATmega1284P Datasheet - Page 291

• 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

26.8.14
In
Table 26-7.
Note:
Table 26-8.
Note:
Table 26-9.
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 26-7
”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.
ATmega164A/ATmega164PA Boot Loader Parameters
Write Section” on page
through
BOOTSZ0
Boot Size Configuration
Read-While-Write Limit
Explanation of different variables used in
1
0
1
0
PC[12:6]
PC[5:0]
12
Table
5
Boot Size
1024 words
128 words
256 words
512 words
26-9, the parameters used in the description of the Self-Programming are given.
Corresponding
280.
Z-value
Z14:Z7
Z6:Z1
Z13
Z6
(1)
(1)
Pages
ATmega164A/PA/324A/PA/644A/PA/1284/P
16
2
4
8
”NRWW – No Read-While-Write Section” on page 280
Description
Most significant bit in the Program Counter. (The Program Counter is 13 bits
PC[12:0])
Most significant bit which is used to address the words within one page (128
words in a page requires seven bits PC [5:0]).
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)
Application
Flash Section
0x0000 - 0x1F7F
0x0000 - 0x1EFF
0x0000 - 0x1DFF
0x0000 - 0x1BFF
Figure 26-3 on page 284
(1)
Figure 26-2 on page
Pages
112
16
0x1F00 - 0x1FFF
Boot Loader
Flash Section
0x1F80 - 0x1FFF
0x1E00 - 0x1FFF
0x1C00 - 0x1FFF
for details about the use of Z-pointer during Self-
282.
and the mapping to the Z-pointer
End
Application
Section
0x1F7F
0x1EFF
0x1DFF
0x1BFF
Address
0x0000 - 0x1BFF
0x1C00 - 0x1FFF
and
”RWW – Read-While-
Boot Reset
Address
(Start Boot
Loader Section)
0x1F80
0x1F00
0x1E00
0x1C00
291