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ATtiny261A Datasheet(PDF) 170 Page - ATMEL Corporation

Part # ATtiny261A
Description  8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash
PDF  292 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATtiny261A Datasheet(HTML) 170 Page - ATMEL Corporation

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170
8197A–AVR–10/09
ATtiny261A/461A/861A
18.5 Page Size
18.6 Serial Programming
Both the Flash and EEPROM memory arrays can be programmed using the serial SPI bus while
RESET is pulled to GND. The serial interface consists of pins SCK, MOSI (input) and MISO (out-
put). See Figure 18-1.
Figure 18-1. Serial Programming and Verify
Note:
If the device is clocked by the internal Oscillator, there is no need to connect a clock source to the
CLKI pin.
Table 18-7.
No. of Words in a Page and No. of Pages in the Flash
Device
Flash Size
Page Size
PCWORD
No. of Pages
PCPAGE
PCMSB
ATtiny261A
1K words (2K bytes)
16 words
PC[3:0]
64
PC[9:4]
9
ATtiny461A
2K words (4K bytes)
32 words
PC[4:0]
64
PC[10:5]
10
ATtiny861A
4K words (8K bytes)
32 words
PC[4:0]
128
PC[11:5]
11
Table 18-8.
No. of Words in a Page and No. of Pages in the EEPROM
Device
EEPROM
Size
Page Size
PCWORD
No. of Pages
PCPAGE
EEAMSB
ATtiny261A
128 bytes
4 bytes
EEA[1:0]
64
EEA[6:2]
6
ATtiny461A
256 bytes
4 bytes
EEA[1:0]
64
EEA[7:2]
7
ATtiny861A
512 bytes
4 bytes
EEA[1:0]
128
EEA[8:2]
8
VCC
GND
SCK
MISO
MOSI
RESET
+1.8 - 5.5V



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