ATTINY261-20PU Atmel, ATTINY261-20PU Datasheet - Page 69
![IC MCU AVR 2K FLASH 20MHZ 20-DIP](/photos/6/80/68043/313-20-dip_sml.jpg)
ATTINY261-20PU
Manufacturer Part Number
ATTINY261-20PU
Description
IC MCU AVR 2K FLASH 20MHZ 20-DIP
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY261-20PU
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
USI
Peripherals
Brown-out Detect/Reset, POR, PWM, 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)
2.7 V ~ 5.5 V
Data Converters
A/D 11x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
20-DIP (0.300", 7.62mm)
Processor Series
ATTINY2x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
128 B
Interface Type
2-Wire/SPI/USI
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
16
Number Of Timers
2
Operating Supply Voltage
2.7 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
Through Hole
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
Minimum Operating Temperature
- 40 C
On-chip Adc
11-ch x 10-bit
Data Rom Size
128 B
Height
4.95 mm
Length
26.92 mm
Supply Voltage (max)
5.5 V
Supply Voltage (min)
2.7 V
Width
7.11 mm
For Use With
ATSTK600 - DEV KIT FOR AVR/AVR32ATAVRBC100 - REF DESIGN KIT BATTERY CHARGER770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATSTK505 - ADAPTER KIT FOR 14PIN AVR MCU
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATTINY261-20PU
Manufacturer:
ATMEL
Quantity:
256
- Current page: 69 of 242
- Download datasheet (5Mb)
10.3
10.3.1
10.3.2
10.3.3
2588E–AVR–08/10
Register Description
MCUCR – MCU Control Register
PORTA – Port A Data Register
DDRA – Port A Data Direction Register
Table 10-8.
Note:
• Bit 6 – PUD: Pull-up Disable
When this bit is written to one, the pull-ups in the I/O ports are disabled even if the DDxn and
PORTxn Registers are configured to enable the pull-ups ({DDxn, PORTxn} = 0b01). See
figuring the Pin” on page 56
Bit
0x35 (0x55)
Read/Write
Initial Value
Bit
0x1B (0x3B)
Read/Write
Initial Value
Bit
0x1A (0x3A)
Read/Write
Initial Value
Signal
Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
PTOE
DIEOE
DIEOV
DI
AIO
1. INTRC means that one of the internal RC Oscillators is selected (by the CKSEL fuses),
EXTCK means that external clock is selected (by the CKSEL fuses).
PB3/OC1B/
PCINT11
0
0
0
0
OC1B Enable
OC1B
0
PCINT11 • PCIE
0
PCINT11
7
-
R
0
7
PORTA7
R/W
0
7
DDA7
R/W
0
Overriding Signals for Alternate Functions in PB3:PB0
6
PUD
R/W
0
6
PORTA6
R/W
0
6
DDA6
R/W
0
for more details about this feature.
PB2/SCK/USCK/SCL/O
C1B/PCINT10
0
0
USI_TWO_WIRE •
USIPOS
(USI_SCL_HOLD +
PORTB2) • DDB2 •
USIPOS
OC1B Enable + USIPOS
• USI_TWO_WIRE •
DDB2
OC1B
USITC • USIPOS
PCINT10 • PCIE +
USISIE • USIPOS
0
USCK/SCL/PCINT10
5
PORTA5
R/W
0
5
DDA5
R/W
0
5
SE
R/W
0
4
PORTA4
R/W
0
4
DDA4
R/W
0
4
SM1
R/W
0
3
PORTA3
R/W
0
3
DDA3
R/W
0
3
SM0
R/W
0
PB1/MISO/DO/OC1A/
PCINT9
0
0
0
0
OC1A Enable +
USIPOS •
USI_THREE_WIRE
OC1A + (DO •
USIPOS)
0
PCINT9 • PCIE
0
PCINT9
2
PORTA2
R/W
0
2
DDA2
R/W
0
2
-
R
0
1
PORTA1
R/W
0
1
DDA1
R/W
0
1
ISC01
R
0
PB0/MOSI/DI/SDA/
OC1A/PCINT8
0
0
USI_TWO_WIRE •
USIPOS
(SDA + PORTB0) •
DDB0 • USIPOS
OC1A Enable +
(USI_TWO_WIRE •
DDB0 • USIPOS)
OC1A
0
PCINT8 • PCIE +
(USISIE • USIPOS)
0
DI/SDA/PCINT8
0
PORTA0
R/W
0
0
DDA0
R/W
0
0
ISC00
R
0
MCUCR
PORTA
DDRA
“Con-
69
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