ATTINY2313A-MUR Atmel, ATTINY2313A-MUR Datasheet - Page 83

• Manufacturer Part Number: ATTINY2313A-MUR
• Description: MCU AVR 2K FLASH 20MHZ 20QFN
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY2313A-MUR

• 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: -

8246A–AVR–11/09
Table 11-7
rect PWM mode.
Table 11-7.
Note:
• Bits 3, 2 – Res: Reserved Bits
These bits are reserved bits in the ATtiny2313A/4313 and will always read as zero.
• Bits 1:0 – WGM01:0: Waveform Generation Mode
Combined with the WGM02 bit found in the TCCR0B Register, these bits control the counting
sequence of the counter, the source for maximum (TOP) counter value, and what type of wave-
form generation to be used, see
unit are: Normal mode (counter), Clear Timer on Compare Match (CTC) mode, and two types of
Pulse Width Modulation (PWM) modes (see
Table 11-8.
Notes:
Mode
COM0B1
0
1
2
3
4
5
6
7
0
0
1
1
1. A special case occurs when OCR0B equals TOP and COM0B1 is set. In this case, the Com-
2. BOTTOM = 0x00
1. MAX
WGM2
pare Match is ignored, but the set or clear is done at TOP. See
page 78
shows the COM0B1:0 bit functionality when the WGM02:0 bits are set to phase cor-
0
0
0
0
1
1
1
1
Compare Output Mode, Phase Correct PWM Mode
Waveform Generation Mode Bit Description
COM0B0
WGM1
0
1
0
1
for more details.
= 0xFF
0
0
1
1
0
0
1
1
Description
Normal port operation, OCR0B disconnected.
Reserved
Clear ORC0B on Compare Match when up-counting. Set OCR0B
on Compare Match when down-counting.
Set OCR0B on Compare Match when up-counting. Clear OCR0B
on Compare Match when down-counting.
WGM0
0
1
0
1
0
1
0
1
Table
Timer/Count
er Mode of
Operation
Normal
PWM, Phase
Correct
CTC
Fast PWM
Reserved
PWM, Phase
Correct
Reserved
Fast PWM
11-8. Modes of operation supported by the Timer/Counter
“Modes of Operation” on page
OCR0A
OCR0A
OCR0A
0xFF
0xFF
0xFF
TOP
–
–
Update of
Immediate
Immediate
OCRx at
(1)
TOP
TOP
TOP
TOP
“Phase Correct PWM Mode” on
–
–
75).
Set on
TOV Flag
BOTTOM
BOTTOM
MAX
MAX
MAX
TOP
–
–
(1)(2)
83