ATTINY2313-20PI Atmel, ATTINY2313-20PI Datasheet - Page 73

• Manufacturer Part Number: ATTINY2313-20PI
• Description: IC MCU AVR 2K FLASH 20DIP
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY2313-20PI

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: 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): 2.7 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Data Converters: -
• Other names: ATTINY2313-24PI; ATTINY2313-24PI

8-bit
Timer/Counter
Register
Description
Timer/Counter Control
Register A – TCCR0A
2543L–AVR–08/10
• Bits 7:6 – COM0A1:0: Compare Match Output A Mode
These bits control the Output Compare pin (OC0A) behavior. If one or both of the COM0A1:0
bits are set, the OC0A output overrides the normal port functionality of the I/O pin it is connected
to. However, note that the Data Direction Register (DDR) bit corresponding to the OC0A pin
must be set in order to enable the output driver.
When OC0A is connected to the pin, the function of the COM0A1:0 bits depends on the
WGM02:0 bit setting.
are set to a normal or CTC mode (non-PWM).
Table 34. Compare Output Mode, non-PWM Mode
Table 35
mode.
Table 35. Compare Output Mode, Fast PWM Mode
Note:
Bit
Read/Write
Initial Value
COM0A1
COM0A1
0
0
1
1
0
0
1
1
1. A special case occurs when OCR0A equals TOP and COM0A1 is set. In this case, the Com-
shows the COM0A1:0 bit functionality when the WGM01:0 bits are set to fast PWM
pare Match is ignored, but the set or clear is done at TOP. See
for more details.
COM0A1
R/W
COM0A0
COM0A0
7
0
0
1
0
1
0
1
0
1
COM0A0
Table 34
R/W
6
0
Description
Normal port operation, OC0A disconnected.
Toggle OC0A on Compare Match
Clear OC0A on Compare Match
Set OC0A on Compare Match
Description
Normal port operation, OC0A disconnected.
WGM02 = 0: Normal Port Operation, OC0A Disconnected.
WGM02 = 1: Toggle OC0A on Compare Match.
Clear OC0A on Compare Match, set OC0A at TOP
Set OC0A on Compare Match, clear OC0A at TOP
COM0B1
shows the COM0A1:0 bit functionality when the WGM02:0 bits
R/W
5
0
COM0B0
R/W
4
0
R
3
–
0
(1)
R
2
–
0
WGM01
R/W
1
0
“Fast PWM Mode” on page 68
WGM00
R/W
0
0
TCCR0A
73