ATmega16HVA Atmel Corporation, ATmega16HVA Datasheet - Page 114
ATmega16HVA
Manufacturer Part Number
ATmega16HVA
Description
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATmega16HVA-4TU
Manufacturer:
Atmel
Quantity:
20
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20.4
20.4.1
20.4.2
114
Register Description
ATmega8HVA/16HVA
VADMUX – V-ADC Multiplexer Selection Register
VADCSR – V-ADC Control and Status Register
• Bit 7:4 – RES: Reserved Bits
These bits are reserved bits in the ATmega8HVA/16HVA and will always read as zero.
• Bit 3:0 – VADMUX3:0: V-ADC Channel Selection Bits
The VADMUX bits determine the V-ADC channel selection. See
Table 20-1.
Note:
• Bit 7:4 – RES: Reserved Bits
These bits are reserved bits in the ATmega8HVA/16HVA and will always read as zero.
• Bit 3 – VADEN: V-ADC Enable
Writing this bit to one enables V-ADC conversion. By writing it to zero, the V-ADC is turned off.
Turning the V-ADC off while a conversion is in progress will terminate this conversion. Note that
the bandgap voltage reference must be enabled separately, see “BGCCR – Bandgap Calibra-
tion C Register” on page 118.
• Bit 2 – VADSC: Voltage ADC Start Conversion
Write this bit to one to start a new conversion of the selected channel.
Bit
(0x7C)
Read/Write
Initial Value
Bit
(0x7A)
Read/Write
Initial Value
1. VTEMP must be measured in Active mode to get the highest accuracy when using calibration
VADMUX3:0
0111...1111
value stored in signature row.
0000
0001
0010
0011
0100
0101
0110
VADMUX channel selection
R
7
–
0
R
7
–
0
R
6
–
0
R
6
–
0
R
5
–
0
R
5
–
0
Channel Selected
R
R
4
–
0
4
–
0
RESERVED
RESERVED
RESERVED
VTEMP
CELL 1
CELL 2
ADC0
ADC1
VADMUX3
VADEN
R/W
R/W
3
0
3
0
(1)
VADMUX2
VADSC
R/W
R/W
2
0
2
0
Table 20-1 on page
VADMUX1
VADCCIF
R/W
R/W
1
0
1
0
VADMUX0
Scale
VADCCIE
0.2
0.2
1.0
1.0
1.0
R/W
–
–
–
R/W
0
0
0
0
8024A–AVR–04/08
114.
VADMUX
VADCSR
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