Rainbow Electronics ATmega128RFA1 - Manual (Page 505)

505
8266A-MCU Wireless-12/09
ATmega128RFA1
Figure 34-3. SPI timing Requirements (Master Mode)
MOSI
(Data Output)
SCK
(CPOL = 1)
MISO
(Data Input)
SCK
(CPOL = 0)
SS
MSB LSB
LSB MSB
...
...
6 1
2 2
3 4 5
8 7
Figure 34-4. SPI timing Requirements (Slave Mode)
MISO
(Data Output)
SCK
(CPOL = 1)
MOSI
(Data Input)
SCK
(CPOL = 0)
SS
MSB LSB
LSB MSB
...
...
10
11 11
12 13 14
17 15
9
X
16
34.7 ADC Characteristics
Table 34-10. ADC Electrical Characteristics
Symbol Parameter Condition Min Typ Max Units
V
INT1
Internal Voltage Reference 1.5 V
V
INT2
Internal Voltage Reference 1.6 V
V
INT3
Internal Voltage Reference AVDD V
R
AREF,EXT
External Voltage Impedance Ω
I
L,AREF
Load Current A
Table 34-11. ADC Characteristics, Single Ended Channels
Symbol Parameter Condition Min
(1)
Typ
(1)
Max
(1)
Units
Single Ended Conversion CLKADC <= 4 MHz 10 Bits
Resolution
Single Ended Conversion CLKADC > 8 MHz 8 Bits
Absolute accuracy (Including Single Ended Conversion TBD LSB