ATMEGA8L-8AC Atmel, ATMEGA8L-8AC Datasheet - Page 102

• Manufacturer Part Number: ATMEGA8L-8AC
• Description: IC AVR MCU 8K LV 8MHZ COM 32TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA8L-8AC

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 23
• Program Memory Size: 8KB (4K 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 8x10b
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 32-TQFP, 32-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: ATMEGA8L8AC

8-bit
Timer/Counter2
with PWM and
Asynchronous
Operation
Overview
102
ATmega8(L)
Timer/Counter2 is a general purpose, single channel, 8-bit Timer/Counter module. The main
features are:
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•
•
•
•
•
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A simplified block diagram of the 8-bit Timer/Counter is shown in
ment of I/O pins, refer to
including I/O bits and I/O pins, are shown in bold. The device-specific I/O Register and bit loca-
tions are listed in the
Figure 45. 8-bit Timer/Counter Block Diagram
Single Channel Counter
Clear Timer on Compare Match (Auto Reload)
Glitch-free, phase Correct Pulse Width Modulator (PWM)
Frequency Generator
10-bit Clock Prescaler
Overflow and Compare Match Interrupt Sources (TOV2 and OCF2)
Allows Clocking from External 32kHz Watch Crystal Independent of the I/O Clock
Status Flags
Timer/Counter
TCNTn
OCRn
=
ASSRn
“8-bit Timer/Counter Register Description” on page
direction
count
clear
BOTTOM
“Pin Configurations” on page
Synchronized Status Flags
= 0
Control Logic
=
TCCRn
TOP
asynchronous Mode
0xFF
Select (ASn)
clk
Tn
Synchronization Unit
Prescaler
OCn
(Int. Req.)
Generation
Waveform
2. CPU accessible I/O Registers,
Figure
45. For the actual place-
114.
Oscillator
T/C
2486Z–AVR–02/11
clk
clk
TOVn
(Int. Req.)
clk
ASY
OCn
I/O
I/O
TOSC1
TOSC2