ATMEGA168-20PI Atmel, ATMEGA168-20PI Datasheet - Page 128

• Manufacturer Part Number: ATMEGA168-20PI
• Description: IC AVR MCU 16K 20MHZ 28DIP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA168-20PI

• 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: 23
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 6x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

128
ATmega48/88/168
Figure 15-13. Timer/Counter Timing Diagram, with Prescaler (f
and ICF n
(PC and PFC PWM)
TOVn
(CTC and FPWM)
(Update at TOP)
TCNTn
TCNTn
OCRnx
(clk
as TOP)
clk
clk
I/O
(FPWM)
I/O
Tn
/8)
(if used
TOP - 1
TOP - 1
Old OCRnx Value
TOP
TOP
BOTTOM
TOP - 1
clk_I/O
New OCRnx Value
/8)
BOTTOM + 1
TOP - 2
2545S–AVR–07/10