ATmega8HVA Atmel Corporation, ATmega8HVA Datasheet - Page 168

• Manufacturer Part Number: ATmega8HVA
• Manufacturer: Atmel Corporation

Specifications of ATmega8HVA

• Flash (kbytes): 8 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

Table 29-1.
Notes:
29.3
Table 29-2.
168
Temperature
Oscillator
Oscillator
Power RC
Ultra Low
Symbol
Coulomb
Slow RC
Counter
Sensor
t
INT
1. All DC Characteristics contained in this data sheet are based on simulation and characterization of other AVR microcontrol-
2. Voltage Regulator performance is based on 220 nF fly capacitors and 2.2 µF smooth capacitor.
3. After VREF calibration at a second temperature. By default the first calibration is performed at temperature T
4. The measured V
5. This value is not tested in production.
6. After software offset compensation, using the polarity switching (CADPOL) feature.
7. After scaling of VADC raw data using Gain and Offset Calibration values stored in Signature Row.
8. Actual offset for each channel stored in signature row can be used to remove this offset error.
9. If the cell input needs to be measured when PV1 is below 1.5V, Atmel can provide data that facilitates less accurate mea-
10. Actual frequency measured at Atmel factory stored in signature row.
External Interrupt Characteristics
ATmega8HVA/16HVA
(10)
(10)
lers manufactured in the same process technology. These values are preliminary values representing design targets, and
will be updated after characterization of actual silicon.
factory test. The value of T
standard test flow at room temperature.
absolute temperature. The specified value represents target accuracy after Atmel factory calibration. Accuracy can be fur-
ther improved by doing a system calibration measurement at a well-known temperature.
surements in this range.
Electrical Characteristics
Asynchronous External Interrupt Characteristics
Parameter
Minimum pulse width for asynchronous external
interrupt
Parameter
Reference Voltage
Conversion Time
and Resolution
INL
CC-ADC Offset
Gain Error
V
to Absolute Temperature
Absolute Accuracy
Frequency
Frequency drift over
temperature
Slow RC Frequency
predicion error
Frequency
Frequency drift over
temperature
PTAT
(5)
, Voltage Proportional
(3)
PTAT
(5)
(5)
(5)
(5)
voltage must be scaled with the calibration value stored in the VPTAT Calibration Register to get the
(5)(6)
(4)
HOT
is stored in the signature row. The second calibration step can easily be implemented in a
(1)
(T
A
Condition
26.9 µV Resolution
0.84 µV Resolution
-100 mV < V
Measured in Active mode
= -10°C to 70°C unless otherwise specified) (Continued)
PI - NI
< 100 mV
Condition
Min
Min
91
89
± 110
1000
± 0.1
0.67
Typ
131
128
Typ
3.9
2.5
± 2
1.5
50
6
± 15
Max
171
167
Max
± 1
± 5
4
1
HOT
8024A–AVR–04/08
in Atmel
Units
mV/K
Unit
LSB
LSB
kHz
kHz
mV
ms
ms
ns
%
%
%
%
K