ATTINY84-20MUR Atmel, ATTINY84-20MUR Datasheet - Page 132
ATTINY84-20MUR
Manufacturer Part Number
ATTINY84-20MUR
Description
MCU AVR 8KB FLASH 20MHZ 20QFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY84-20MUR
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
USI
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o
12
Program Memory Size
8KB (4K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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16. Analog to Digital Converter
16.1
16.2
132
Features
Overview
ATtiny24/44/84
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The ATtiny24/44/84 features a 10-bit successive approximation ADC. The ADC is connected to
8-pin port A for external sources. In addition to external sources internal temperature sensor can
be measured by ADC. Analog Multiplexer allows eight single-ended channels or 12 differential
channels from Port A. The programmable gain stage provides ampification steps 0 dB (1x) and
26 dB (20x) for 12 differential ADC channels.
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
on page
Internal reference voltage of nominally 1.1V is provided On-chip. Alternatively, V
as reference voltage for single ended channels. There is also an option to use an external volt-
age reference and turn-off the internal voltage reference.
10-bit Resolution
1.0 LSB Integral Non-linearity
± 2 LSB Absolute Accuracy
13µs Conversion Time
15 kSPS at Maximum Resolution
Eight Multiplexed Single Ended Input Channels
Twelve Differential Input Channels with Selectable Gain (1x, 20x)
Temperature Sensor Input Channel
Optional Left Adjustment for ADC Result Readout
0 - V
1.1V ADC Reference Voltage
Free Running or Single Conversion Mode
ADC Start Conversion by Auto Triggering on Interrupt Sources
Interrupt on ADC Conversion Complete
Sleep Mode Noise Canceler
Unipolar / Bipolar Input Mode
Input Polarity Reversal Mode
CC
133.
ADC Input Voltage Range
CC
8006K–AVR–10/10
can be used
Figure 16-1
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