ATtiny261 Atmel Corporation, ATtiny261 Datasheet - Page 182

• Manufacturer Part Number: ATtiny261
• Manufacturer: Atmel Corporation

Specifications of ATtiny261

• Flash (kbytes): 2 Kbytes
• Pin Count: 20
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 4
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 16
• Ext Interrupts: 16
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 11
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 0.12
• Eeprom (bytes): 128
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8 to 5.5
• Operating Voltage (vcc): 1.8 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 6
• Input Capture Channels: 1
• Pwm Channels: 6
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

18.7.6
182
ATtiny261/461/861
Programming the EEPROM
Figure 18-4. Addressing the Flash Which is Organized in Pages
Note:
In the figure below, “XX” means don’t care. The numbers in the figure refer to the programming
description above.
WR
Figure 18-5. Flash Programming Waveforms
The EEPROM is organized in pages, see
EEPROM, the program data is latched into a page buffer. This allows one page of data to be
STEP
DATA
XA1 / BS2
XA0
PAGEL / BS1
XTAL1
WR
RDY / BSY
RESET +12V
OE
PROGRAM MEMORY
PCPAGE and PCWORD are listed in
PROGRAM
COUNTER
PAGE
0x10
1
PAGE ADDRESS
WITHIN THE FLASH
ADDR. LOW
PCMSB
2
PCPAGE
DATA LOW
3
DATA HIGH
4
ADDR. LOW
PAGEMSB
Table 18-7 on page
2
PCWORD
Table 18-8 on page
DATA LOW
WORD ADDRESS
WITHIN A PAGE
8
5
3
DATA HIGH
INSTRUCTION WORD
4
173.
ADDR. HIGH
PAGE
6
173. When programming the
XXX
7
PCWORD[PAGEMSB:0]:
00
01
02
PAGEEND
2588E–AVR–08/10
0x00
9