ATMEGA8L-8AC Atmel, ATMEGA8L-8AC Datasheet - Page 74
ATMEGA8L-8AC
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
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Manufacturer
Quantity
Price
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Special Function IO
Register – SFIOR
74
ATmega8(L)
sampling, the maximum frequency of an external clock it can detect is half the sampling fre-
quency (Nyquist sampling theorem). However, due to variation of the system clock frequency
and duty cycle caused by Oscillator source (crystal, resonator, and capacitors) tolerances, it is
recommended that maximum frequency of an external clock source is less than f
An external clock source can not be prescaled.
Figure 31. Prescaler for Timer/Counter0 and Timer/Counter1
Note:
• Bit 0 – PSR10: Prescaler Reset Timer/Counter1 and Timer/Counter0
When this bit is written to one, the Timer/Counter1 and Timer/Counter0 prescaler will be reset.
The bit will be cleared by hardware after the operation is performed. Writing a zero to this bit will
have no effect. Note that Timer/Counter1 and Timer/Counter0 share the same prescaler and a
reset of this prescaler will affect both timers. This bit will always be read as zero.
Bit
Read/Write
Initial Value
PSR10
clk
T0
T1
I/O
1. The synchronization logic on the input pins (
Synchronization
Synchronization
R
7
–
0
R
6
–
0
R
5
–
0
clk
Clear
T1
R
4
–
0
ACME
R/W
3
0
T1/T0)
PUD
R/W
is shown in
2
0
(1)
PSR2
R/W
1
0
Figure 30 on page 73
PSR10
R/W
0
0
clk
T0
clk_I/O
SFIOR
2486Z–AVR–02/11
/2.5.
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