ATTINY26-16PI Atmel, ATTINY26-16PI Datasheet - Page 94

• 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 to
Digital
Converter
Features
94
ATtiny26(L)
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The ATtiny26(L) features a 10-bit successive approximation ADC. The ADC is connected to an
11-channel Analog Multiplexer which allows eight differential voltage input combinations or 11
single-ended voltage inputs constructed from seven pins from Port A and four pins from Port B.
Seven of the differential inputs are equipped with a programmable gain stage, providing amplifi-
cation steps of 0 dB (1x) and 26 dB (20x) on the differential input voltage before the A/D
conversion. There are four groups of three differential analog input channel selections. All input
channels in each group share a common negative terminal, while another ADC input can be
selected as the positive input terminal. The single-ended voltage inputs refer to 0V (GND).
The ADC contains a Sample and Hold Amplifier which ensures that the input voltage to the ADC
is held at a constant level during conversion. A block diagram of the ADC is shown in Figure 51.
The ADC has an analog supply voltage pin, AVCC. The voltage on AVCC must not differ more
than ±0.3V from V
how to connect these pins.
An internal reference voltage of nominally 2.56V is provided On-chip, and this reference may be
externally decoupled at the AREF pin by a capacitor.
10-bit Resolution
±2 LSB Absolute Accuracy
0.5 LSB Integral Non-linearity
Optional Offset Cancellation
13 - 260 µs Conversion Time
11 Multiplexed Single Ended Input Channels
8 Differential Input Channels
7 Differential Input Channels with Optional Gain of 20x
Optional Left Adjustment for ADC Result Readout
0 - AVCC ADC Input Voltage Range
Selectable ADC Reference Voltage
Free Running or Single Conversion Mode
Interrupt on ADC Conversion Complete
Sleep Mode Noise Canceler
CC
. See the paragraph “ADC Noise Canceling Techniques” on page 105 on
1477K–AVR–08/10