ATtiny2313 Atmel Corporation, ATtiny2313 Datasheet - Page 75

• Manufacturer Part Number: ATtiny2313
• Manufacturer: Atmel Corporation

Specifications of ATtiny2313

• Flash (kbytes): 2 Kbytes
• Pin Count: 20
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 4
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 18
• Ext Interrupts: 18
• Usb Speed: No
• Usb Interface: No
• Spi: 2
• Twi (i2c): 1
• Uart: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 0.12
• Eeprom (bytes): 128
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8 to 5.5
• Operating Voltage (vcc): 1.8 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 4
• Input Capture Channels: 1
• Pwm Channels: 4
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

2543L–AVR–08/10
Table 39
PWM mode.
Table 39. Compare Output Mode, Phase Correct PWM Mode
Note:
• Bits 3, 2 – Res: Reserved Bits
These bits are reserved bits in the ATtiny2313 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 40. Waveform Generation Mode Bit Description
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
shows the COM0B1:0 bit functionality when the WGM02:0 bits are set to phase correct
WGM2
pare Match is ignored, but the set or clear is done at TOP. See
page 69
0
0
0
0
1
1
1
1
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
40. Modes of operation supported by the Timer/Counter
“Modes of Operation” on page
OCR0A
OCR0A
OCR0A
0xFF
0xFF
0xFF
TOP
–
–
(1)
Update of
Immediate
Immediate
OCRx at
TOP
TOP
TOP
TOP
“Phase Correct PWM Mode” on
–
–
66).
Set on
TOV Flag
BOTTOM
BOTTOM
MAX
MAX
MAX
TOP
–
–
(1)(2)
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