ATMEGA168V-10AU SL383 Atmel, ATMEGA168V-10AU SL383 Datasheet - Page 213
ATMEGA168V-10AU SL383
Manufacturer Part Number
ATMEGA168V-10AU SL383
Description
MCU AVR 16KB FLASH 10MHZ 32TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATAVRTS2080B.pdf
(378 pages)
Specifications of ATMEGA168V-10AU SL383
Core Processor
AVR
Core Size
8-Bit
Speed
10MHz
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)
1.8 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-TQFP, 32-VQFP
For Use With
ATSTK600-TQFP32 - STK600 SOCKET/ADAPTER 32-TQFPATAVRDRAGON - KIT DRAGON 32KB FLASH MEM AVR
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
ATMEGA168V-10AUR
ATMEGA168V-10AUR SL383
ATMEGA168V-10AUR SL383
ATMEGA168V-10AUR
ATMEGA168V-10AUR SL383
ATMEGA168V-10AUR SL383
ATMEGA168V-10AUR
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2545S–AVR–07/10
Figure 21-7. SCL Synchronization Between Multiple Masters
Arbitration is carried out by all masters continuously monitoring the SDA line after outputting
data. If the value read from the SDA line does not match the value the Master had output, it has
lost the arbitration. Note that a Master can only lose arbitration when it outputs a high SDA value
while another Master outputs a low value. The losing Master should immediately go to Slave
mode, checking if it is being addressed by the winning Master. The SDA line should be left high,
but losing masters are allowed to generate a clock signal until the end of the current data or
address packet. Arbitration will continue until only one Master remains, and this may take many
bits. If several masters are trying to address the same Slave, arbitration will continue into the
data packet.
Figure 21-8. Arbitration Between Two Masters
SCL from
SCL from
Master A
Master B
SCL Bus
Synchronized
Line
SCL Line
SDA from
SDA from
Master A
Master B
SDA Line
START
TA
Counting Low Period
low
Masters Start
TB
low
Arbitration, SDA
ATmega48/88/168
Master A Loses
TA
Counting High Period
high
Masters Start
TB
high
A
SDA
213
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