ATTINY26-16PI Atmel, ATTINY26-16PI Datasheet - Page 91

• Manufacturer Part Number: ATTINY26-16PI
• Description: IC AVR MCU 2K 16MHZ IND 20-DIP
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY26-16PI

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 16
• Program Memory Size: 2KB (1K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 11x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Analog
Comparator
Analog Comparator
Control and Status
Register – ACSR
1477K–AVR–08/10
The Analog Comparator compares the input values on the positive pin PA6 (AIN0) and negative
pin PA7 (AIN1). When the voltage on the positive pin PA6 (AIN0) is higher than the voltage on
the negative pin PA7 (AIN1), the Analog Comparator Output, ACO is set (one). The compara-
tor’s output can trigger a separate interrupt, exclusive to the Analog Comparator. The user can
select Interrupt triggering on comparator output rise, fall or toggle. A block diagram of the com-
parator and its surrounding logic is shown in the Figure 50.
Figure 50. Analog Comparator Block Diagram
• Bit 7 – ACD: Analog Comparator Disable
When this bit is set(one), the power to the Analog Comparator is switched off. This bit can be set
at any time to turn off the Analog Comparator. When changing the ACD bit, the Analog Compar-
ator Interrupt must be disabled by clearing the ACIE bit in ACSR. Otherwise an interrupt can
occur when the bit is changed.
• Bit 6 – ACBG: Analog Comparator Bandgap Select
When this bit is set (one), it selects internal bandgap reference voltage (1.18V) as the positive
comparator input.
• Bit 5 – ACO: Analog Comparator Output
ACO is directly connected to the comparator output.
Bit
$08 ($28)
Read/Write
Initial Value
(AIN0)
(AIN1)
PA6
PA7
ACD
R/W
MULTIPLEXER OUTPUT
7
0
ADC
ACBG
R/W
6
0
MUX
MUX
MUX
ACBG
ACME
ACO
R
5
X
R/W
ACI
4
0
ACIE
R/W
3
0
ACME
R/W
2
0
ACIS1
R/W
1
0
ACIS0
R/W
0
0
ACSR
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