ATMEGA16U2-AUR Atmel, ATMEGA16U2-AUR Datasheet - Page 241

• Manufacturer Part Number: ATMEGA16U2-AUR
• Description: MCU AVR 8K FLASH 16MHZ 32TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA16U2-AUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: SPI, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 22
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-TQFP, 32-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -

23.8.16
In
Table 23-14. Boot Size Configuration
(Page size = 64 words = 128 bytes)
Note:
Table 23-15. Read-While-Write Limit
Note:
Table 23-16. Explanation of different variables used in
Note:
See
Programming.
7799D–AVR–11/10
1
1
0
0
Section
Read-While-Write section (RWW)
No Read-While-Write section (NRWW)
Variable
PCMSB
PAGEMSB
ZPCMSB
ZPAGEMSB
PCPAGE
PCWORD
Table 23-14
“Addressing the Flash During Self-Programming” on page 232
1
0
1
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.
ATmega32U2 Boot Loader Parameters
Write Section” on page
256 words
512 words
1024 words
2048 words
through
Table
PC[12:6]
PC[5:0]
12
5
23-16, the parameters used in the description of the Self-Programming are given.
4
8
16
32
227.
(1)
(1)
(Word Addresses)
0x0000 - 0x3EFF
0x0000 - 0x3DFF
0x0000 - 0x3BFF
0x0000 - 0x37FF
Corresponding
“NRWW – No Read-While-Write Section” on page 227
Z-value
Z13:Z7
Z6:Z1
Z13
Z6
Figure 23-4
Figure
0x3F00 - 0x3FFF
0x3E00 - 0x3FFF
0x3C00 - 0x3FFF
0x3800 - 0x3FFF
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 (64 words in a page requires six 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)
and the mapping to the Z-pointer
23-2.
for details about the use of Z-pointer during Self-
Pages
(1)
224
32
ATmega8U2/16U2/32U2
0x3EFF
0x3DFF
0x3BFF
0x37FF
Address
0x0000 - 0x37FF
0x3800 - 0x3FFF
and
“RWW – Read-While-
0x3F00
0x3E00
0x3C00
0x3800
241