ATMEGA168V-10MUR Atmel, ATMEGA168V-10MUR Datasheet - Page 27
ATMEGA168V-10MUR
Manufacturer Part Number
ATMEGA168V-10MUR
Description
MCU AVR 16KB FLASH 10MHZ 32QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATAVRTS2080B.pdf
(378 pages)
Specifications of ATMEGA168V-10MUR
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-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
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
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8.1.4
8.1.5
8.2
8.2.1
8.2.2
2545S–AVR–07/10
Clock Sources
Asynchronous Timer Clock – clk
ADC Clock – clk
Default Clock Source
Clock Startup Sequence
The Asynchronous Timer clock allows the Asynchronous Timer/Counter to be clocked directly
from an external clock or an external 32 kHz clock crystal. The dedicated clock domain allows
using this Timer/Counter as a real-time counter even when the device is in sleep mode.
The ADC is provided with a dedicated clock domain. This allows halting the CPU and I/O clocks
in order to reduce noise generated by digital circuitry. This gives more accurate ADC conversion
results.
The device has the following clock source options, selectable by Flash Fuse bits as shown
below. The clock from the selected source is input to the AVR clock generator, and routed to the
appropriate modules.
Table 8-1.
Note:
The device is shipped with internal RC oscillator at 8.0 MHz and with the fuse CKDIV8 pro-
grammed, resulting in 1.0 MHz system clock. The startup time is set to maximum and time-out
period enabled. (CKSEL = "0010", SUT = "10", CKDIV8 = "0"). The default setting ensures that
all users can make their desired clock source setting using any available programming interface.
Any clock source needs a sufficient V
cycles before it can be considered stable.
To ensure sufficient V
the device reset is released by all other reset sources.
describes the start conditions for the internal reset. The delay (t
Oscillator and the number of cycles in the delay is set by the SUTx and CKSELx fuse bits. The
ADC
Device Clocking Option
Low Power Crystal Oscillator
Full Swing Crystal Oscillator
Low Frequency Crystal Oscillator
Internal 128 kHz RC Oscillator
Calibrated Internal RC Oscillator
External Clock
Reserved
1. For all fuses “1” means unprogrammed while “0” means programmed.
Device Clocking Options Select
ASY
CC
, the device issues an internal reset with a time-out delay (t
CC
to start oscillating and a minimum number of oscillating
(1)
“System Control and Reset” on page 44
ATmega48/88/168
TOUT
1111 - 1000
0111 - 0110
0101 - 0100
CKSEL3..0
) is timed from the Watchdog
0011
0010
0000
0001
TOUT
) after
27
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