ATTINY25V-10SSU Atmel, ATTINY25V-10SSU Datasheet - Page 127
![MCU AVR 2K ISP FLASH 1.8V 8-SOIC](/photos/6/50/65032/453-8-soic_sml.jpg)
ATTINY25V-10SSU
Manufacturer Part Number
ATTINY25V-10SSU
Description
MCU AVR 2K ISP FLASH 1.8V 8-SOIC
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY25V-10SSU
Core Processor
AVR
Core Size
8-Bit
Speed
10MHz
Connectivity
USI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
6
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)
1.8 V ~ 5.5 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
8-SOIC (3.9mm Width)
Processor Series
ATTINY2x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
128 B
Interface Type
USI
Maximum Clock Frequency
10 MHz
Number Of Programmable I/os
6
Number Of Timers
2
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
On-chip Adc
4-ch x 10-bit
Package
8SOIC
Device Core
AVR
Family Name
ATtiny
Maximum Speed
10 MHz
Operating Supply Voltage
2.5|3.3|5 V
For Use With
ATSTK600-DIP40 - STK600 SOCKET/ADAPTER 40-PDIPATAVRBC100 - REF DESIGN KIT BATTERY CHARGER770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATAVRDRAGON - KIT DRAGON 32KB FLASH MEM AVRATAVRISP2 - PROGRAMMER AVR IN SYSTEMATJTAGICE2 - AVR ON-CHIP D-BUG SYSTEM
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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17.3
2586M–AVR–07/10
Operation
Figure 17-1. Analog to Digital Converter Block Schematic
The ADC converts an analog input voltage to a 10-bit digital value through successive approxi-
mation. The minimum value represents GND and the maximum value represents the voltage on
V
The voltage reference for the ADC may be selected by writing to the REFS[2:0] bits in ADMUX.
The VCC supply, the AREF pin or an internal 1.1V / 2.56V voltage reference may be selected as
the ADC voltage reference. Optionally the internal 2.56V voltage reference may be decoupled
by an external capacitor at the AREF pin to improve noise immunity.
The analog input channel and differential gain are selected by writing to the MUX[3:0] bits in
ADMUX. Any of the four ADC input pins ADC[3:0] can be selected as single ended inputs to the
ADC. ADC2 or ADC0 can be selected as positive input and ADC0, ADC1, ADC2 or ADC3 can
be selected as negative input to the differential gain amplifier.
If differential channels are selected, the differential gain stage amplifies the voltage difference
between the selected input pair by the selected gain factor, 1x or 20x, according to the setting of
the MUX[3:0] bits in ADMUX. This amplified value then becomes the analog input to the ADC. If
single ended channels are used, the gain amplifier is bypassed altogether.
CC
ADC3
ADC2
ADC1
ADC0
AREF
V
CC
, the voltage on the AREF pin or an internal 1.1V / 2.56V voltage reference.
INTERNAL 1.1V/2.56V
TEMPERATURE
8-BIT DATA BUS
ADC CTRL. & STATUS B
REGISTER (ADCSRB)
SENSOR
REFERENCE
ADC4
INPUT
INPUT
MUX
NEG.
MUX
ADC MULTIPLEXER
SELECT (ADMUX)
MUX DECODER
+
-
GAIN
AMPLIFIER
SINGLE ENDED / DIFFERENTIAL SELECTION
10-BIT DAC
ADC CTRL. & STATUS A
REGISTER (ADCSRA)
ADC CONVERSION
COMPLETE IRQ
PRESCALER
CONVERSION LOGIC
ADTS[2:0]
INTERRUPT
TRIGGER
FLAGS
SELECT
SAMPLE & HOLD
COMPARATOR
15
+
-
ADC DATA REGISTER
(ADCH/ADCL)
ADC MULTIPLEXER
OUTPUT
0
127
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