ATmega32 Atmel Corporation, ATmega32 Datasheet - Page 255

• Manufacturer Part Number: ATmega32
• Manufacturer: Atmel Corporation

Specifications of ATmega32

• Flash (kbytes): 32 Kbytes
• Pin Count: 44
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 32
• Ext Interrupts: 3
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• 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: No
• Crypto Engine: No
• Sram (kbytes): 2
• Eeprom (bytes): 1024
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 3
• Output Compare Channels: 4
• Input Capture Channels: 1
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

ATmega32 Boot
Loader Parameters
2503Q–AVR–02/11
In
are given.
Table 99. Boot Size Configuration
Note:
Table 100. Read-While-Write Limit
Note:
Table 101. Explanation of Different Variables used in
pointer
Note:
BOOTSZ1
1
1
0
0
Section
Read-While-Write section (RWW)
No Read-While-Write section (NRWW)
Variable
PCMSB
PAGEMSB
ZPCMSB
ZPAGEMSB
PCPAGE
PCWORD
Table 99
1. The different BOOTSZ Fuse configurations are shown in
1. For details about these two section, see
1. Z15: always ignored
245
Z0: should be zero for all SPM commands, byte select for the LPM instruction.
See
Z-pointer during Self-Programming.
through
BOOTSZ0
1
0
1
0
and
PC[13:6]
“Addressing the Flash during Self-Programming” on page 249
PC[5:0]
13
5
“RWW – Read-While-Write Section” on page 245
Table
Boot
Size
256
words
512
words
1024
words
2048
words
Corresponding
101, the parameters used in the description of the self programming
Z-value
Z14:Z7
Z6:Z1
Z14
Pages
4
8
16
32
Z6
(1)
(1)
(1)
Application
Flash
Section
$0000 -
$3EFF
$0000 -
$3DFF
$0000 -
$3BFF
$0000 -
$37FF
Program Counter page address: Page select,
Program Counter word address: Word select,
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.
for page erase and page write
for filling temporary buffer (must be zero during
page write operation)
“NRWW – No Read-While-Write Section” on page
Boot
Loader
Flash
Section
$3F00 -
$3FFF
$3E00 -
$3FFF
$3C00 -
$3FFF
$3800 -
$3FFF
Pages
Figure 126
224
32
End
Application
section
$3EFF
$3DFF
$3BFF
$37FF
Figure 125
Address
$0000 - $37FF
$3800 - $3FFF
and the Mapping to the Z-
ATmega32(L)
for details about the use of
Boot Reset
Address
(start Boot
Loader
Section)
$3F00
$3E00
$3C00
$3800
255