ATMEGA8L-8MUR Atmel, ATMEGA8L-8MUR Datasheet - Page 54
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ATMEGA8L-8MUR
Manufacturer Part Number
ATMEGA8L-8MUR
Description
MCU AVR 8KB FLASH 8MHZ 32QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA8L-8MU.pdf
(302 pages)
Specifications of ATMEGA8L-8MUR
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
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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54
ATmega8(L)
goes low. It is clocked into the PINxn Register at the succeeding positive clock edge. As indi-
cated by the two arrows t
between ½ and 1-½ system clock period depending upon the time of assertion.
When reading back a software assigned pin value, a nop instruction must be inserted as indi-
cated in
clock. In this case, the delay t
Figure 24. Synchronization when Reading a Software Assigned Pin Value
INSTRUCTIONS
SYSTEM CLK
SYNC LATCH
Figure
24. The out instruction sets the “SYNC LATCH” signal at the positive edge of the
PINxn
r16
r17
pd,max
pd
out PORTx, r16
through the synchronizer is 1 system clock period.
and t
pd,min
, a single signal transition on the pin will be delayed
0x00
nop
t
pd
0xFF
in r17, PINx
2486Z–AVR–02/11
0xFF
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