Datasheet

145
8024A–AVR–04/08
ATmega8HVA/16HVA
Notes: 1. Default FOSCCAL value after reset.
2. FOSCCAL setting used to smooth the transition from one segment to the next when calibrating
the Fast RC oscillator.
3. 8 prescaled Slow RC periods in µs using the Oscillator Sampling Interface (@T
HOT
°C).
4. Characterized Slow RC oscillator frequency temperature drift prediction value.
5. Slow RC oscillator frequency in kHz (@T
HOT
°C).
6. ULP RC oscillator frequency in kHz (@ T
HOT
°C).
7. Calibration value found in BGCCR in the first step of VREF calibration (BGCRR = 0x0F),
(@ T
HOT
°C).
8. Calibration word used for the second step of the VREF calibration.
9. Calibration word used to compensate for gain error in V-ADC Cell input 1.
10. Calibration word used to compensate for gain error in V-ADC Cell input 2.
11. Calibration byte used to compensate for offset in V-ADC Cells.
12. Calibration word used to compensate for gain error in ADC0.
13. Calibration word used to compensate for gain error in ADC1.
14. Calibration byte used to compensate for offset in ADC0 and ADC1.
15. Calibration word used to calculate the absolute temperature in Kelvin from a VTEMP
conversion.
16. Hot tamperature used for factory calibration in °C.
All other addresses are reserved for future use.
Reserved 12H
BGCCR Calibration Byte @ HOT
(7)
13H
V-ADC RAW Cell1 L 14H
V-ADC RAW Cell1 H
(8)
15H
V-ADC RAW ADC0 L 16H
V-ADC RAW ADC0 H
(8)
17H
VPTAT CAL L 18H
VPTAT CAL H
(15)
19H
V-ADC Cell1 Calibration Word L 1AH
V-ADC Cell1 Calibration Word H
(9)
1BH
V-ADC Cell2 Calibration Word L 1CH
V-ADC Cell2 Calibration Word H
(10)
1DH
V-ADC Cell1 Offset
(11)
1EH
V-ADC Cell2 Offset
(11)
1FH
V-ADC ADC0 Gain Calibration Word L 20H
V-ADC ADC0 Gain Calibration Word H
(12)
21H
V-ADC ADC1 Gain Calibration Word L 22H
V-ADC ADC1 Gain Calibration Word H
(13)
23H
V-ADC ADC0 Offset
(14)
24H
V-ADC ADC1 Offset
(14)
25H
Reserved 26H:2FH
T
HOT
(16)
30H
Table 26-1. Signature Row Addressing. (Continued)
Signature Byte Description Z-Pointer Address