ATTINY2313A-SUR Atmel, ATTINY2313A-SUR Datasheet - Page 61

• Manufacturer Part Number: ATTINY2313A-SUR
• Description: MCU AVR 2KB FLASH 20MHZ 20SOIC
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY2313A-SUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 18
• 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
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -

10.2.1
8246A–AVR–11/09
Alternate Functions of Port A
The Port A pins with alternate function are shown in
Table 10-3.
• Port A, Bit 0 – XTAL1/CLKI/PCINT8
• Port A, Bit 1 – XTAL2/PCINT9
• Port A, Bit 2 – RESET/dW/PCINT10
• XTAL1: Chip Clock Oscillator pin 1. Used for all chip clock sources except internal
• CLKI: Clock Input from an external clock source, see
• PCINT8: Pin Change Interrupt source 8. The PA0 pin can serve as an external interrupt
• XTAL2: Chip Clock Oscillator pin 2. Used as clock pin for all chip clock sources except
• PCINT9: Pin Change Interrupt source 9. The PA1 pin can serve as an external interrupt
• RESET: External Reset input is active low and enabled by unprogramming (“1”) the
• dW: When the debugWIRE Enable (DWEN) Fuse is programmed and Lock bits are
• PCINT10: Pin Change Interrupt source 10. The PA2 pin can serve as an external interrupt
calibratable RC oscillator. When used as a clock pin, the pin can not be used as an I/O pin.
When using internal calibratable RC Oscillator as a chip clock source, PA0 serves as an
ordinary I/O pin.
source for pin change interrupt 1.
internal calibratable RC Oscillator and external clock. When used as a clock pin, the pin can
not be used as an I/O pin. When using internal calibratable RC Oscillator or External clock as
a Chip clock sources, PA1 serves as an ordinary I/O pin.
source for pin change interrupt 1.
RSTDISBL Fuse. Pullup is activated and output driver and digital input are deactivated when
the pin is used as the RESET pin.
unprogrammed, the debugWIRE system within the target device is activated. The RESET
port pin is configured as a wire-AND (open-drain) bi-directional I/O pin with pull-up enabled
and becomes the communication gateway between target and emulator.
source for pin change interrupt 1.
Port Pin
PA0
PA1
PA2
Port A Pins Alternate Functions
Alternate Function
XTAL1: Crystal Oscillator Input
CLKI:
PCINT8: Pin Change Interrupt 1, Source 8
XTAL2: Crystal Oscillator Output
PCINT9: Pin Change Interrupt 1, Source 9
RESET: Reset pin
dW:
PCINT10:Pin Change Interrupt 1, Source 10
External Clock Input
debugWire I/O
Table
“External Clock” on page
10-3.
25.
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