ATTINY5-MAH Atmel, ATTINY5-MAH Datasheet - Page 94

• Manufacturer Part Number: ATTINY5-MAH
• Description: IC MCU AVR 512B FLASH 8UDFN
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY5-MAH

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 12MHz
• Peripherals: POR, PWM, WDT
• Number Of I /o: 4
• Program Memory Size: 512B (256 x 16)
• Program Memory Type: FLASH
• Ram Size: 32 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 4x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-UFDFN Exposed Pad
• Core: AVR8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Connectivity: -
• Lead Free Status / Rohs Status: Details

13.12 Register Description
13.12.1
13.12.2
94
ATtiny4/5/9/10
ADMUX
ADCSRA
–
–
ADC Multiplexer Selection Register
ADC Control and Status Register A
• Bits 7:2 – Res: Reserved Bits
These bits are reserved and will always read zero.
• Bits 1:0 – MUX1:0: Analog Channel Selection Bits
The value of these bits selects which combination of analog inputs are connected to the ADC.
See
in effect until the conversion is complete (ADIF in ADCSRA is set).
Table 13-2.
• Bit 7 – ADEN: ADC Enable
Writing this bit to one enables the ADC. By writing it to zero, the ADC is turned off. Turning the
ADC off while a conversion is in progress, will terminate this conversion.
• Bit 6 – ADSC: ADC Start Conversion
In Single Conversion mode, write this bit to one to start each conversion. In Free Running mode,
write this bit to one to start the first conversion. The first conversion after ADSC has been written
after the ADC has been enabled, or if ADSC is written at the same time as the ADC is enabled,
will take 25 ADC clock cycles instead of the normal 13. This first conversion performs initializa-
tion of the ADC.
ADSC will read as one as long as a conversion is in progress. When the conversion is complete,
it returns to zero. Writing zero to this bit has no effect.
• Bit 5 – ADATE: ADC Auto Trigger Enable
When this bit is written to one, Auto Triggering of the ADC is enabled. The ADC will start a con-
version on a positive edge of the selected trigger signal. The trigger source is selected by setting
the ADC Trigger Select bits, ADTS in ADCSRB.
Bit
0x1B
Read/Write
Initial Value
Bit
0x1D
Read/Write
Initial Value
Table 13-2
MUX1
0
1
ADEN
R/W
Input Channel Selections
7
0
R
7
–
0
for details. If these bits are changed during a conversion, the change will not go
ADSC
R/W
6
0
R
6
–
0
ADATE
R/W
5
0
R
5
–
0
MUX0
0
1
0
1
ADIF
R/W
4
0
R
4
–
0
ADIE
R/W
3
0
3
–
R
0
Single Ended Input
ADC0 (PB0)
ADC1 (PB1)
ADC2 (PB2)
ADC3 (PB3)
ADPS2
R/W
2
0
R
2
–
0
ADPS1
R/W
MUX1
1
0
R/W
1
0
ADPS0
R/W
MUX0
0
0
R/W
0
0
ADCSRA
ADMUX
8127D–AVR–02/10