ATmega16HVA Atmel Corporation, ATmega16HVA Datasheet - Page 39

• 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

10.8
10.8.1
10.8.2
8024A–AVR–04/08
Register Description
SMCR – Sleep Mode Control Register
PRR0 – Power Reduction Register 0
The Sleep Mode Control Register contains control bits for power management.
• Bits 7:4 – Res: Reserved Bits
These bits are reserved bits in the ATmega8HVA/16HVA, and will always read as zero.
• Bits 3:1 – SM2:0: Sleep Mode Select Bits 2, 1 and 0
These bits select between the four available sleep modes as shown in
Table 10-3.
• Bit 0 – SE: Sleep Enable
The SE bit must be written to logic one to make the MCU enter the sleep mode when the SLEEP
instruction is executed. To avoid the MCU entering the sleep mode unless it is the programmer’s
purpose, it is recommended to write the Sleep Enable (SE) bit to one just before the execution of
the SLEEP instruction and to clear it immediately after waking up.
• Bit 7:6, 4 - Res: Reserved bits
These bits are reserved for future use. For compatibility with future devices, these bits must be
written to zero when PRR0 is written.
• Bit 5 - PRVRM: Power Reduction Voltage Regulator Monitor
Writing a logic one to this bit shuts down the Voltage Regulator Monitor interface by stopping the
clock of the module.
Bit
0x33 (0x53)
Read/Write
Initial Value
Bit
(0x64)
Read/Write
Initial Value
SM2
0
0
0
0
1
1
1
1
R
Sleep Mode Select
7
–
0
R
7
–
0
R
6
–
0
R
6
–
0
SM1
0
0
1
1
0
0
1
1
PRVRM
R/W
5
0
R
5
–
0
4
–
R
0
R
4
–
0
SM0
PRSPI
0
1
0
1
0
1
0
1
R/W
3
0
SM2
R/W
3
0
PRTIM1
R/W
ATmega8HVA/16HVA
2
0
SM1
R/W
Sleep Mode
Idle
ADC Noise Reduction
Reserved
Power-save
Power-off
Reserved
Reserved
Reserved
2
0
PRTIM0
R/W
SM0
R/W
1
0
1
0
Table
PRVADC
R/W
R/W
SE
0
0
0
0
10-3.
SMCR
PRR0
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