ATmega16HVA Atmel Corporation, ATmega16HVA Datasheet - Page 34

• Manufacturer Part Number: ATmega16HVA
• Manufacturer: Atmel Corporation

Specifications of ATmega16HVA

• Flash (kbytes): 16 Kbytes
• Pin Count: 28
• Max. Operating Frequency: 4 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 3
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 6
• Ext Interrupts: 3
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 6
• Adc Resolution (bits): 12
• Adc Speed (ksps): 1.9
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 0.5
• Eeprom (bytes): 256
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -20 to 85
• I/o Supply Class: 1.8 to 9.0
• Operating Voltage (vcc): 1.8 to 9.0
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 4
• Input Capture Channels: 2
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

10. Power Management and Sleep Modes
10.1
34
Sleep Modes
ATmega8HVA/16HVA
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 consump-
tion to the application’s requirements.
Figure 9-1 on page 24
their distribution. The figure is helpful in selecting an appropriate sleep mode. The different sleep
modes and their wake up sources is summarized in
shows a sleep mode state diagram.
Table 10-1.
Notes:
To enter any of the sleep modes, the SE bit in SMCR, see
ter” on page
SM2..0 bits in the SMCR Register select which sleep mode will be activated by the SLEEP
instruction. See
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 any sleep mode except Power-off. If a
reset occurs during sleep mode, the MCU wakes up and executes from the Reset Vector.
Mode
Idle
ADC Noise Reduction
Power-save
Power-off
1. Discharge FET must be switched off for Charger Detect to be active.
2. Instantaneous and Accumulate Conversion Complete wake-up only.
39, must be written to logic one and a SLEEP instruction must be executed. The
Wake-up Sources for Sleep Modes
Table 10-3 on page 39
presents the different clock systems in the ATmega8HVA/16HVA, and
X
X
X
for a summary.
X
X
X
X
X
X
Table
X
X
X
Wake-up sources
”SMCR – Sleep Mode Control Regis-
10-1, and
X
X
X
X
Figure 10-1 on page 35
X
X
X
(2)
(2)
(2)
X
X
8024A–AVR–04/08
X
X