ATMEGA645V-8AU Atmel, ATMEGA645V-8AU Datasheet - Page 262
![IC AVR MCU FLASH 64K 64TQFP](/photos/12/13/121332/313-64-tqfp_sml.jpg)
ATMEGA645V-8AU
Manufacturer Part Number
ATMEGA645V-8AU
Description
IC AVR MCU FLASH 64K 64TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA325-16MU.pdf
(362 pages)
Specifications of ATMEGA645V-8AU
Core Processor
AVR
Core Size
8-Bit
Speed
8MHz
Connectivity
SPI, UART/USART, USI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
53
Program Memory Size
64KB (32K x 16)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TQFP, 64-VQFP
Processor Series
ATMEGA64x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
4 KB
Interface Type
SPI, UART, USI
Maximum Clock Frequency
8 MHz
Number Of Programmable I/os
54
Number Of Timers
3
Operating Supply Voltage
1.8 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 8 Channel
Controller Family/series
AVR MEGA
No. Of I/o's
54
Eeprom Memory Size
2KB
Ram Memory Size
4KB
Cpu Speed
8MHz
No. Of Timers
3
Rohs Compliant
Yes
Data Rom Size
2 KB
Height
1 mm
Length
14 mm
Supply Voltage (max)
5.5 V
Supply Voltage (min)
2.7 V
Width
14 mm
For Use With
ATSTK600-TQFP64 - STK600 SOCKET/ADAPTER 64-TQFP770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAG770-1005 - ISP 4PORT FOR ATMEL AVR MCU JTAG770-1004 - ISP 4PORT FOR ATMEL AVR MCU SPIATAVRISP2 - PROGRAMMER AVR IN SYSTEM
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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25.8.13
Table 25-6.
Note:
Table 25-7.
Note:
Table 25-8.
Note:
2570M–AVR–04/11
BOOTSZ1
Section
Read-While-Write section (RWW)
No Read-While-Write section (NRWW)
Variable
PCMSB
PAGEMSB
ZPCMSB
ZPAGEMSB
PCPAGE
PCWORD
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 LPM instruction.
Atmel ATmega325/3250/645/6450 Boot Loader Parameters
Write Section” on page
See
Programming.
BOOTSZ0
Boot Size Configuration
Read-While-Write Limit
Explanation of different variables used in
“Addressing the Flash During Self-Programming” on page 256
1
0
1
0
PC[13/14:6/7]
PC[5/6:0]
13/14
5/6
Boot Size
In
ming are given.
1024/2048 words
2048/4096 words
512/1024 words
256/512 words
Table 25-6
252.
Corresponding
(1)
Z14/15:Z7/8
(1)
Z-value
Z6/7:Z1
Z14/15
through
Z6/7
Pages
16
32
4
8
“NRWW – No Read-While-Write Section” on page 252
Table
Application
Flash Section
0x0000-0x3EFF/
0x0000-0x7DFF
0x0000-0x3DFF/
0x0000-0x7BFF/
0x0000-0x3BFF/
0x0000-0x77FF
0x0000-0x37FF/
0x0000-0x6FFF
Most significant bit in the Program Counter. (Program Counter is 14/15 bits
PC[13/14:0])
Most significant bit which is used to address the words within one page
(64/128 words in a page requires six/seven bits PC [5/6:0]).
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 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)
25-8, the parameters used in the description of the Self-Program-
Figure 25-3
224/224
Pages
32/32
Figure 25-2
and the mapping to the Z-pointer
ATmega325/3250/645/6450
for details about the use of Z-pointer during Self-
Boot Loader
Flash Section
0x3F00-0x3FFF/
0x7E00-0x7FFF
0x3E00-0x3FFF/
0x7C00-0x7FFF
0x3C00-0x3FFF/
0x7800-0x7FFF
0x3800-0x3FFF/
0x7000-0x7FFF
Address
0x0000 - x37FF/ 0x0000 - 0x6FFF
0x3800 - 0x3FFF/ 0x7000-0x7FFF
Description
End
Application
Section
0x3EFF/
0x7DFF
0x3DFF/
0x7BFF
0x3BFF/
0x77FF
0x37FF/
0x6FFF
and
“RWW – Read-While-
(1)
Boot Reset
Address
(Start
Boot Loader
Section)
0x3F00/
0x7E00
0x3E00/
0x7C00
0x3C00/
0x7800
0x3800/
0x7000
262
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