ATMEGA64M1-AU Atmel, ATMEGA64M1-AU Datasheet - Page 284

• Manufacturer Part Number: ATMEGA64M1-AU
• Description: IC MCU AVR 64K FLASH 32TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA64M1-AU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: CAN, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• 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): 2.7 V ~ 5.5 V
• Data Converters: A/D 11x10b; D/A 1x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-TQFP, 32-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of I /o: -
• Lead Free Status / Rohs Status: Details

26.7.16
In
Table 26-13. Boot Size Configuration, ATmega64M1 (64K product)
Notes:
Table 26-14. Read-While-Write Limit
For details about these two section, see
Write Section” on page
Table 26-15. Explanation of Different Variables used in
Note:
284
BOOTSZ1
Section
Read-While-Write section (RWW)
No Read-While-Write section (NRWW)
Variable
PCMSB
PAGEMSB
ZPCMSB
ZPAGEMSB
PCPAGE
PCWORD
Table 26-10
1
1
0
0
1. The different BOOTSZ Fuse configurations are shown in
2. 1 word equals 2 bytes
1. Z15:Z13: always ignored
ATmega16M1/32M1/64M1
ATmega64M1 - 64K - Flash 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 275
PC[14:7]
PC[6:0]
1
0
1
0
14
7
Table
271.
Boot Size
512 words
1024 words
2048 words
4096 words
26-12, the parameters used in the description of the self programming are given.
Corresponding
Z-value
Z15:Z8
Z7:Z1
(2)
Z15
Z8
Pages
(1)
“NRWW – No Read-While-Write Section” on page 271
16
32
8
4
Application
Flash Section
0x0000 - 0x7DFF
0x0000 - 0x7BFF
0x0000 - 0x77FF
0x0000 - 0x6FFF
Description
Most significant bit in the Program Counter (the Program Counter is 15 bits PC[14:0])
Most significant bit which is used to address the words within one page (64 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)
Pages
224
32
Figure 26-3 on page 276
Figure 26-2 on page 273
Boot Loader
Flash Section
0x7E00 - 0x7FFF
0x7C00 - 0x7FFF
0x7800 - 0x7FFF
0x7000 - 0x7FFF
Address
0x0000 - 0x6FFF
0x7000 - 0x7FFF
for details about the use of Z-pointer during Self-
and the Mapping to the Z-pointer
End Application
Section
0x7DFF
0x7BFF
0x77FF
0x6FFF
and
“RWW – Read-While-
Boot Reset Address
(Start Boot Loader
Section)
0x7E00
0x7C00
0x7800
0x7000
8209D–AVR–11/10