ATTINY4313-MU Atmel, ATTINY4313-MU Datasheet - Page 105

• Manufacturer Part Number: ATTINY4313-MU
• Description: IC MCU AVR 4K FLASH 20QFN
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY4313-MU

• 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: 4KB (2K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-VQFN Exposed Pad, 20-HVQFN, 20-SQFN, 20-DHVQFN
• Processor Series: ATtiny
• Core: AVR
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: SPI, USART, USI
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 18
• Number Of Timers: 2
• Operating Supply Voltage: 3.3 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Operating Temperature Range: - 40 C to + 85 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -
• Lead Free Status / Rohs Status: Details

8246A–AVR–11/09
Figure 12-11. Timer/Counter Timing Diagram, Setting of OCF1x, with Prescaler (f
Figure 12-12 on page 105
using phase and frequency correct PWM mode the OCR1x Register is updated at BOTTOM.
The timing diagrams will be the same, but TOP should be replaced by BOTTOM, TOP-1 by
BOTTOM+1 and so on. The same renaming applies for modes that set the TOV1 flag at
BOTTOM.
Figure 12-12. Timer/Counter Timing Diagram, no Prescaling
Figure 12-13
(PC and PFC PWM)
and ICFn
(CTC and FPWM)
TCNTn
OCRnx
OCFnx
(clk
TOVn
(Update at TOP)
clk
clk
I/O
TCNTn
TCNTn
OCRnx
as TOP)
(clk
I/O
Tn
clk
clk
/8)
I/O
shows the same timing data, but with the prescaler enabled.
(FPWM)
I/O
Tn
/1)
(if used
OCRnx - 1
shows the count sequence close to TOP in various modes. When
TOP - 1
TOP - 1
Old OCRnx Value
OCRnx
OCRnx Value
TOP
TOP
OCRnx + 1
BOTTOM
TOP - 1
New OCRnx Value
OCRnx + 2
BOTTOM + 1
TOP - 2
clk_I/O
/8)
105