ATmega64 Atmel Corporation, ATmega64 Datasheet - Page 299

• Manufacturer Part Number: ATmega64
• Manufacturer: Atmel Corporation

Specifications of ATmega64

• Flash (kbytes): 64 Kbytes
• Pin Count: 64
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 53
• Ext Interrupts: 8
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Uart: 2
• 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): 4
• Eeprom (bytes): 2048
• 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: 4
• Output Compare Channels: 8
• Input Capture Channels: 2
• Pwm Channels: 7
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

2490Q–AVR–06/10
I. Repeat B through H until the entire Flash is programmed or until all data has been
programmed.
J. End Page Programming
1. 1. Set XA1, XA0 to “10”. This enables command loading.
2. Set DATA to “0000 0000”. This is the command for No Operation.
3. Give XTAL1 a positive pulse. This loads the command, and the internal write signals are
Figure 139. Addressing the Flash which is Organized in Pages
Note:
Figure 140. Programming the Flash Waveforms
Note:
reset.
RESET +12V
RDY/BSY
1. PCPAGE and PCWORD are listed in
1. “XX” is don’t care. The letters refer to the programming description above.
PAGEL
XTAL1
DATA
PROGRAM MEMORY
XA1
XA0
BS1
BS2
WR
OE
PROGRAM
COUNTER
PAGE
$10
A
PAGE ADDRESS
WITHIN THE FLASH
ADDR. LOW
PCMSB
B
DATA LOW
PCPAGE
C
DATA HIGH
D
XX
E
PAGEMSB
PCWORD
ADDR. LOW
Table 123 on page 296
B
WORD ADDRESS
WITHIN A PAGE
(1)
DATA LOW
C
F
INSTRUCTION WORD
DATA HIGH
D
PAGE
E
XX
(1)
ADDR. HIGH
G
.
ATmega64(L)
XX
H
PCWORD[PAGEMSB:0]:
00
01
02
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