ATMEGA169V-1MC Atmel, ATMEGA169V-1MC Datasheet - Page 34

• Manufacturer Part Number: ATMEGA169V-1MC
• Description: IC MCU AVR 16K 1.8V 1MHZ 64-QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA169V-1MC

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 1MHz
• Connectivity: SPI, UART/USART, USI
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 53
• 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: 0°C ~ 70°C
• Package / Case: 64-MLF®, 64-QFN
• For Use With: ATAVRISP2 - PROGRAMMER AVR IN SYSTEMATAVRBFLY - KIT EVALUATION AVR BUTTERFLYATSTK502 - MOD EXPANSION AVR STARTER 500
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Standby Mode
Table 15. Active Clock Domains and Wake-up Sources in the Different Sleep Modes.
Notes:
Minimizing Power
Consumption
Analog to Digital Converter
Analog Comparator
34
Sleep Mode
Idle
ADC Noise
Reduction
Power-down
Power-save
Standby
1. Only recommended with external crystal or resonator selected as clock source.
2. If either LCD controller or Timer/Counter2 is running in asynchronous mode.
3. For INT0, only level interrupt.
(1)
ATmega169V/L
clk
CPU
Active Clock Domains
clk
FLASH
clk
X
IO
clk
The LCD controller and Timer/Counter2 can be clocked both synchronously and asyn-
chronously in Power-save mode. The clock source for the two modules can be selected
independent of each other. If neither the LCD controller nor the Timer/Counter2 is using
the asynchronous clock, the Timer/Counter Oscillator is stopped during sleep. If neither
the LCD controller nor the Timer/Counter2 is using the synchronous clock, the clock
source is stopped during sleep. Note that even if the synchronous clock is running in
Power-save, this clock is only available for the LCD controller and Timer/Counter2.
When the SM2..0 bits are 110 and an external crystal/resonator clock option is selected,
the SLEEP instruction makes the MCU enter Standby mode. This mode is identical to
Power-down with the exception that the Oscillator is kept running. From Standby mode,
the device wakes up in six clock cycles.
There are several issues to consider when trying to minimize the power consumption in
an AVR controlled system. In general, sleep modes should be used as much as possi-
ble, and the sleep mode should be selected so that as few as possible of the device’s
functions are operating. All functions not needed should be disabled. In particular, the
following modules may need special consideration when trying to achieve the lowest
possible power consumption.
If enabled, the ADC will be enabled in all sleep modes. To save power, the ADC should
be disabled before entering any sleep mode. When the ADC is turned off and on again,
the next conversion will be an extended conversion. Refer to “Analog to Digital Con-
verter” on page 192 for details on ADC operation.
When entering Idle mode, the Analog Comparator should be disabled if not used. When
entering ADC Noise Reduction mode, the Analog Comparator should be disabled. In
other sleep modes, the Analog Comparator is automatically disabled. However, if the
Analog Comparator is set up to use the Internal Voltage Reference as input, the Analog
Comparator should be disabled in all sleep modes. Otherwise, the Internal Voltage Ref-
erence will be enabled, independent of sleep mode. Refer to “Analog Comparator” on
page 189 for details on how to configure the Analog Comparator.
X
X
ADC
clk
X
X
X
ASY
Main Clock
Enabled
Source
Oscillators
X
X
X
Enabled
Timer
Osc
X
X
X
(2)
(2)
and Pin
Chang
INT0
X
X
X
X
X
e
(3)
(3)
(3)
(3)
Condition
USI Start
X
X
X
X
X
Controller Timer2
Wake-up Sources
LCD
X
X
X
(2)
X
X
X
(2)
EEPROM
Ready
SPM/
X
X
2514H–AVR–05/03
ADC
X
X
Other
I/O
X