AT90USB646-AUR Atmel, AT90USB646-AUR Datasheet - Page 365
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AT90USB646-AUR
Manufacturer Part Number
AT90USB646-AUR
Description
MCU AVR 64K FLASH 16MHZ 64TQFP
Manufacturer
Atmel
Series
AVR® 90USBr
Datasheet
1.AT90USB646-MU.pdf
(461 pages)
Specifications of AT90USB646-AUR
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
EBI/EMI, I²C, SPI, UART/USART, USB, USB OTG
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
48
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TQFP, 64-VQFP
Data Bus Width
8 bit
Data Ram Size
4 KB
Interface Type
SPI, UART
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
48
Number Of Timers
4
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 8 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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7593K–AVR–11/09
Table 28-10.
Note:
See
Z-pointer during Self-Programming.
Variable
PAGEMSB
ZPCMSB
ZPAGEMSB
PCPAGE
PCWORD
ZPAGEMSB
PAGEMSB
PCWORD
ZPCMSB
PCPAGE
PCMSB
“Addressing the Flash During Self-Programming” on page 357
1. Z0: should be zero for all SPM commands, byte select for the (E)LPM instruction.
Explanation of different variables used in
pointer
PC[16:7]
PC[15:7]
PC[6:0]
PC[6:0]
15
6
6
Corresponding
Z-value
Z17:Z8
Z16:Z7
Z7:Z1
Z7:Z1
Z17
Z16
Z7
Z7
Description
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)
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 7 bits PC
[6:0]).
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).
Figure 28-4
(1)
AT90USB64/128
and the mapping to the Z-
for details about the use of
365
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