ATTINY261A-SUR Atmel, ATTINY261A-SUR Datasheet - Page 170

• Manufacturer Part Number: ATTINY261A-SUR
• Description: MCU AVR 2KB FLASH 20MHZ 20SOIC
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY261A-SUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 16
• Program Memory Size: 2KB (1K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 11x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

18.5
18.6
170
Page Size
Serial Programming
ATtiny261A/461A/861A
Table 18-7.
Table 18-8.
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. Serial Programming and Verify
Note:
ATtiny261A
ATtiny461A
ATtiny861A
ATtiny261A
ATtiny461A
ATtiny861A
Device
Device
If the device is clocked by the internal Oscillator, there is no need to connect a clock source to the
CLKI pin.
Figure
1K words (2K bytes)
2K words (4K bytes)
4K words (8K bytes)
No. of Words in a Page and No. of Pages in the Flash
No. of Words in a Page and No. of Pages in the EEPROM
EEPROM
128 bytes
256 bytes
512 bytes
18-1.
Size
Flash Size
MOSI
MISO
SCK
Page Size
4 bytes
4 bytes
4 bytes
Page Size
16 words
32 words
32 words
RESET
GND
PCWORD
EEA[1:0]
EEA[1:0]
EEA[1:0]
PCWORD
PC[3:0]
PC[4:0]
PC[4:0]
No. of Pages
VCC
128
64
64
No. of Pages
+1.8 - 5.5V
128
64
64
PCPAGE
EEA[6:2]
EEA[7:2]
EEA[8:2]
PCPAGE
PC[10:5]
PC[11:5]
PC[9:4]
8197B–AVR–01/10
EEAMSB
PCMSB
6
7
8
10
11
9