ATTINY85-15ST1 Atmel, ATTINY85-15ST1 Datasheet - Page 111
![MCU AVR 8K FLASH 15MHZ 8-SOIC](/photos/6/50/65032/453-8-soic_sml.jpg)
ATTINY85-15ST1
Manufacturer Part Number
ATTINY85-15ST1
Description
MCU AVR 8K FLASH 15MHZ 8-SOIC
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY25-15MZ.pdf
(196 pages)
Specifications of ATTINY85-15ST1
Package / Case
8-SOIC (3.9mm Width)
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 105°C
Speed
16MHz
Number Of I /o
6
Eeprom Size
512 x 8
Core Processor
AVR
Program Memory Type
FLASH
Ram Size
512 x 8
Program Memory Size
8KB (8K x 8)
Data Converters
A/D 4x10b
Oscillator Type
Internal
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Connectivity
USI
Core Size
8-Bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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18. Analog to Digital Converter
18.1
7598H–AVR–07/09
Features
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The ATtiny25/45/85 features a 10-bit successive approximation ADC. The ADC is connected to
a 4-channel Analog Multiplexer which allows one differential voltage input and four single-ended
voltage inputs constructed from the pins of Port B. The differential input (PB3, PB4 or PB2, PB5)
is equipped with a programmable gain stage, providing amplification step of 26 dB (20x) on the
differential input voltage before the A/D conversion. The single-ended voltage inputs refer to 0V
(GND).
The ADC contains a Sample and Hold circuit 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
Internal voltage references of nominally 1.1V or 2.56V are provided On-chip and these voltage
references can optionally be externally decoupled at the AREF (PB0) pin by a capacitor, for bet-
ter noise performance. Alternatively, V
channels. There is also an option to use an external voltage reference and turn-off the internal
voltage reference. These options are selected using the REFS2..0 bits of the ADMUX control
register.
10-bit Resolution
0.5 LSB Integral Non-linearity
± 2 LSB Absolute Accuracy
65 - 260 µs Conversion Time
Up to 15 kSPS at Maximum Resolution
Four Multiplexed Single Ended Input Channels
Two differential input channels with selectable gain
Temperature sensor input channel
Optional Left Adjustment for ADC Result Readout
0 - V
Selectable 1.1V / 2.56V ADC Voltage Reference
Free Running or Single Conversion Mode
ADC Start Conversion by Auto Triggering on Interrupt Sources
Interrupt on ADC Conversion Complete
Sleep Mode Noise Cancele
Unipolar / Bibilar Input Mode
Input Polarity Reversal Mode
CC
ADC Input Voltage Range
CC
can be used as voltage reference for single ended
ATtiny25/45/85
Figure
18-1.
111
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