ATmega48PA Atmel Corporation, ATmega48PA Datasheet - Page 294

• Manufacturer Part Number: ATmega48PA
• Manufacturer: Atmel Corporation

Specifications of ATmega48PA

• Flash (kbytes): 4 Kbytes
• Pin Count: 32
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 12
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 23
• Ext Interrupts: 24
• Usb Speed: No
• Usb Interface: No
• Spi: 2
• Twi (i2c): 1
• Uart: 1
• 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: Yes
• Crypto Engine: No
• Sram (kbytes): 0.5
• Eeprom (bytes): 256
• Self Program Memory: NO
• 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

27.8.16
In
Table 27-13. Boot Size Configuration, ATmega328/328P
Table 27-14. Read-While-Write Limit, ATmega328/328P
For details about these two section, see
Write Section” on page
Table 27-15. Explanation of Different Variables used in
Note:
8271D–AVR–05/11
BOOTSZ1
Section
Read-While-Write section (RWW)
No Read-While-Write section (NRWW)
Variable
PCMSB
PAGEMSB
ZPCMSB
ZPAGEMSB
PCPAGE
PCWORD
Table 27-13
1
1
0
0
1. Z15: always ignored
ATmega328 and ATmega328P Boot Loader Parameters
Z0: should be zero for all SPM commands, byte select for the LPM instruction.
See
Programming.
BOOTSZ0
through
”Addressing the Flash During Self-Programming” on page 285
1
0
1
0
Table
281.
Boot
Size
256 words
512 words
1024 words
2048 words
PC[13:6]
Note:
PC[5:0]
13
5
27-15, the parameters used in the description of the self programming are given.
The different BOOTSZ Fuse configurations are shown in
Pages
16
32
4
8
”NRWW – No Read-While-Write Section” on page 281
Corresponding
Application
Flash
Section
0x0000 - 0x3EFF
0x0000 - 0x3DFF
0x0000 - 0x3BFF
0x0000 - 0x37FF
Z-value
Z14:Z7
Z6:Z1
ATmega48A/PA/88A/PA/168A/PA/328/P
Z14
Z6
(1)
Figure 27-3
Boot
Loader
Flash
Section
0x3F00 - 0x3FFF
0x3E00 - 0x3FFF
0x3C00 - 0x3FFF
0x3800 - 0x3FFF
Description
Most significant bit in the Program Counter. (The Program Counter
is 14 bits PC[13:0])
Most significant bit which is used to address the words within
one page (64 words in a page requires 6 bits PC [5:0])
Bit in Z-register that is mapped to PCMSB. Because Z0 is not used,
the ZPCMSB equals PCMSB + 1.
Bit in Z-register that is mapped to PAGEMSB. 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
and the Mapping to the Z-pointer, ATmega328/328P
for details about the use of Z-pointer during Self-
End
Application
Section
0x3EFF
0x3DFF
0x3BFF
0x37FF
Address
0x0000 - 0x37FF
0x3800 - 0x3FFF
Figure 27-2 on page
Boot Reset Address (Start Boot
Loader Section)
0x3F00
0x3E00
0x3C00
0x3800
and
”RWW – Read-While-
283.
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