ATMEGA169P-16MCU Atmel, ATMEGA169P-16MCU Datasheet - Page 40

• Manufacturer Part Number: ATMEGA169P-16MCU
• Description: MCU AVR 16K ISP FLSH 16MHZ 64QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA169P-16MCU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: SPI, UART/USART, USI
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 54
• 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): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-VQFN Exposed Pad, 64-HVQFN, 64-SQFN, 64-DHVQFN
• For Use With: ATAVRBFLY - KIT EVALUATION AVR BUTTERFLYATSTK502 - MOD EXPANSION AVR STARTER 500
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

9. Power Management and Sleep Modes
9.1
Table 9-1.
Notes:
8018P–AVR–08/10
Sleep
Mode
Idle
ADC NRM
Power-
down
Power-
save
Standby
Sleep Modes
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)
Active Clock Domains and Wake-up Sources in the Different Sleep Modes.
Active Clock Domains
Sleep modes enable the application to shut down unused modules in the MCU, thereby saving-
power. The AVR provides various sleep modes allowing the user to tailor the power
consumption to the application’s requirements.
Figure 8-1 on page 30
bution. The figure is helpful in selecting an appropriate sleep mode.
different sleep modes and their wake up sources.
To enter any of the sleep modes, the SE bit in SMCR must be written to logic one and a SLEEP
instruction must be executed. The SM2, SM1, and SM0 bits in the SMCR Register select which
sleep mode will be activated by the SLEEP instruction. See
summary.
If an enabled interrupt occurs while the MCU is in a sleep mode, the MCU wakes up. The MCU
is then halted for four cycles in addition to the start-up time, executes the interrupt routine, and
resumes execution from the instruction following SLEEP. The contents of the Register File and
SRAM are unaltered when the device wakes up from sleep. If a reset occurs during sleep mode,
the MCU wakes up and executes from the Reset Vector.
X
X
X
X
X
X
presents the different clock systems in the ATmega169P, and their distri-
X
X
X
Oscillators
X
X
X
(2)
(2)
X
X
X
X
X
(3)
(3)
(3)
(3)
X
X
X
X
X
X
Wake-up Sources
X
X
(2)
Table 9-2 on page 45
X
X
X
(2)
ATmega169P
Table 9-1
X
X
X
X
shows the
for a
X
40